电话: 021-5427 0855 

手机: 136 6171 6328 

GEWTEC LTD.

上海晰微光电技术有限公司
产品中心
Product center
λ/4 N-BK7精密窗口片

λ/4 N-BK7精密窗口片

￥ 0.00
0.00
  

TECHSPEC® λ/4 N-BK7精密窗口片非常适合工业和低功率激光应用。高公差设计使光束畸变和散射最小。宽带增透膜选项可将这些精密窗口的光谱范围扩展到可见光和近红外光谱。TECHSPEC® λ/4 N-BK7 精密窗口片提供从 2 毫米到 200 毫米的尺寸的圆形和矩形外观可选。


  • 外形可选圆形和长方形，产品尺寸从 2mm-200mm 可选

  • 8 种宽带的增透膜可供选择

  • 全球最多的标准 N-BK7 窗口品类可供选择

  • 还提供 超薄 N-BK7 窗口片


                           产品

标题产品编码色散系数 (vd)倒角CA (%)CA (mm)Dia. (mm)尺寸 (mm)厚度 (mm)涂层涂层规格热膨胀系数 CTE (10-6/°C)
2mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window27-67464.17 Protective as needed 90 1.80 2.00 +0.00/-0.05
1.00 ±0.10Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
2.5mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window27-67564.17 Protective as needed 90 2.25 2.50 +0.00/-0.05
1.00 ±0.10Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
3mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window27-71964.17 Protective as needed 90 2.70 3.00 +0.00/-0.05
1.00 ±0.10Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
4mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window27-81564.17 Protective as needed 90 3.60 4.00 +0.00/-0.05
1.00 ±0.10Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window20-46464.17 Protective as needed 90 4.50 5.00 +0.00/-0.25
1.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm Dia., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-35564.17 Protective as needed 90 4.50 5.00 +0.00/-0.25
1.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm Dia., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-44364.17 Protective as needed 90 4.50 5.00 +0.00/-0.25
1.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm Dia., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-39964.17 Protective as needed 90 4.50 5.00 +0.00/-0.25
1.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm Dia., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-37764.17 Protective as needed 90 4.50 5.00 +0.00/-0.25
1.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm Dia., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-46564.17 Protective as needed 90 4.50 5.00 +0.00/-0.25
1.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm Dia., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-42164.17 Protective as needed 90 4.50 5.00 +0.00/-0.25
1.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm Dia., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-78364.17 Protective as needed 90 4.50 5.00 +0.00/-0.25
1.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
5mm 直径， 未镀膜，1/4波长表面精度，N-BK7窗口片45-57364.17 Protective as needed 90 4.50 5.00 +0.0/-0.25
2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm 直径，镀氟化镁膜，1/4波长表面精度，N-BK7窗口片45-57464.17 Protective as needed 90 4.50 5.00 +0.0/-0.25
2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm Dia., 2mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-28664.17 Protective as needed 90 4.50 5.00 +0.0/-0.25
2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm直径，镀可见光-近红外膜，1/4λ N-BK7窗口片48-44864.17 Protective as needed 90 4.50 5.00 +0.0/-0.25
2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径5mm 可见光 0°镀膜， 1/4λ N-BK7 窗口片47-51564.17 Protective as needed 90 4.50 5.00 +0.0/-0.25
2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm Dia., 2mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-30864.17 Protective as needed 90 4.50 5.00 +0.0/-0.25
2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm直径，镀近红外-I膜，1/4λ N-BK7窗口片83-46464.17 Protective as needed 90 4.50 5.00 +0.0/-0.25
2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
5mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-78464.17 Protective as needed 90 4.50 5.00 +0.00/-0.25
2.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
6mm Sq., 2mm 厚度， 入/4 N-BK7 不镀膜窗口片 29-30064.17 Protective as needed 90 5.40 x 5.40 
6.00 x 6.00 +0.0/-0.252.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window20-47264.17 Protective as needed 90 8.10 9.00 +0.00/-0.25
1.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm Dia., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-35664.17 Protective as needed 90 8.10 9.00 +0.00/-0.25
1.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm Dia., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-44464.17 Protective as needed 90 8.10 9.00 +0.00/-0.25
1.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm Dia., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-40064.17 Protective as needed 90 8.10 9.00 +0.00/-0.25
1.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm Dia., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-37864.17 Protective as needed 90 8.10 9.00 +0.00/-0.25
1.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm Dia., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-46664.17 Protective as needed 90 8.10 9.00 +0.00/-0.25
1.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm Dia., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-42264.17 Protective as needed 90 8.10 9.00 +0.00/-0.25
1.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm Dia., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-78564.17 Protective as needed 90 8.10 9.00 +0.00/-0.25
1.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
9mm直径，未镀膜，1/4λ N-BK7窗口片49-12164.17 Protective as needed 90 8.10 9.00 +0.0/-0.25
2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm直径，镀氟化镁，1/4λ N-BK7窗口片49-12264.17 Protective as needed 90 8.10 9.00 +0.0/-0.25
2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm Dia., 2mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-28764.17 Protective as needed 90 8.10 9.00 +0.0/-0.25
2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm直径，镀可见光-近红外膜，1/4λ N-BK7窗口片49-12464.17 Protective as needed 90 8.10 9.00 +0.0/-0.25
2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm直径，镀可见光0°膜，1/4λ N-BK7窗口片49-12364.17 Protective as needed 90 8.10 9.00 +0.0/-0.25
2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm Dia., 2mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-30964.17 Protective as needed 90 8.10 9.00 +0.0/-0.25
2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm直径，镀近红外-I膜，1/4λ N-BK7窗口片83-46564.17 Protective as needed 90 8.10 9.00 +0.0/-0.25
2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
9mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-78664.17 Protective as needed 90 8.10 9.00 +0.00/-0.25
2.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
10mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window20-48064.17 Protective as needed 90 9.00 10.00 +0.00/-0.25
1.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Dia., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-35764.17 Protective as needed 90 9.00 10.00 +0.00/-0.25
1.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Dia., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-44564.17 Protective as needed 90 9.00 10.00 +0.00/-0.25
1.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Dia., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-40164.17 Protective as needed 90 9.00 10.00 +0.00/-0.25
1.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Dia., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-37964.17 Protective as needed 90 9.00 10.00 +0.00/-0.25
1.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Dia., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-46764.17 Protective as needed 90 9.00 10.00 +0.00/-0.25
1.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Dia., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-42364.17 Protective as needed 90 9.00 10.00 +0.00/-0.25
1.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Dia., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-78764.17 Protective as needed 90 9.00 10.00 +0.00/-0.25
1.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
10mm Sq., 1mm Thick, Uncoated λ/4 N-BK7 Window20-53964.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 +0.00/-0.251.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Sq., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-36964.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 +0.00/-0.251.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Sq., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-45764.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 +0.00/-0.251.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Sq., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-41364.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 +0.00/-0.251.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Sq., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-39164.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 +0.00/-0.251.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Sq., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-47964.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 +0.00/-0.251.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Sq., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-43564.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 +0.00/-0.251.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Sq., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-78864.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 +0.00/-0.251.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
直径10mm， 入/4 N-BK7 不镀膜窗口片45-07464.17 Protective as needed 90 9.00 10.00 +0.0/-0.25
2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径10mm，镀MgF2，入/4 N-BK7窗口片45-25664.17 Protective as needed 90 9.00 10.00 +0.0/-0.25
2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Dia., 2mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-28864.17 Protective as needed 90 9.00 10.00 +0.0/-0.25
2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm直径，镀可见光-近红外膜， 1/4波长表面精度N-BK7窗口片45-65764.17 Protective as needed 90 9.00 10.00 +0.0/-0.25
2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径10mm 可见光 0°镀膜， 1/4λ N-BK7 窗口片47-51664.17 Protective as needed 90 9.00 10.00 +0.0/-0.25
2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Dia., 2mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-31064.17 Protective as needed 90 9.00 10.00 +0.0/-0.25
2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm直径，镀近红外-I膜，1/4λ N-BK7窗口片83-46664.17 Protective as needed 90 9.00 10.00 +0.0/-0.25
2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-78964.17 Protective as needed 90 9.00 10.00 +0.00/-0.25
2.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
10mm方形，未镀膜，1/4λ N-BK7窗口片49-62064.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm方形，镀氟化镁，1/4λ N-BK7窗口片49-62364.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Sq., 2mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-28964.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm方形，镀可见光-近红外膜，1/4λ N-BK7窗口片49-63164.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm方形，镀可见光0°膜，1/4λ N-BK7窗口片49-62764.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Sq., 2mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-31164.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm 方形，镀近红外-I膜，1/4λ N-BK7窗口片83-46764.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
10mm Sq., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-79064.17 Protective as needed 90 9.00 x 9.00 
10.00 x 10.00 +0.00/-0.252.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
12.5mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window20-49164.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
1.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-35864.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
1.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-44664.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
1.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-40264.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
1.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-38064.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
1.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-46864.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
1.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-42464.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
1.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-79164.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
1.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
12.5mm Dia., 1mm Thick, SWIR AR Coated λ/4 N-BK7 Window70-28064.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
1.00 ±0.10BBAR (1650-3000nm) Ravg <1% @ 1650 - 3000nm @ 0° AOI Rabs <2% @ 1650 - 3000nm @ 0° AOI 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 2mm Thick, Uncoated λ/4 N-BK7 Window20-49564.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 2mm Thick, MgF2 Coated λ/4 N-BK7 Window23-35964.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 2mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-44764.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 2mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-40364.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 2mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-38164.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 2mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-46964.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 2mm Thick, NIR I Coated λ/4 N-BK7 Window23-42564.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-79264.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
2.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
直径12.5mm， 入/4 N-BK7 不镀膜窗口片45-07564.17 Protective as needed 90 11.25 12.50 +0.0/-0.25
3.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径12.5mm，镀MgF2，入/4 N-BK7窗口片45-25764.17 Protective as needed 90 11.25 12.50 +0.0/-0.25
3.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 3mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-29064.17 Protective as needed 90 11.25 12.50 +0.0/-0.25
3.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm直径，镀可见光-近红外膜， 1/4波长表面精度N-BK7窗口片45-65864.17 Protective as needed 90 11.25 12.50 +0.0/-0.25
3.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径12.5mm 可见光 0°镀膜， 1/4λ N-BK7 窗口片47-51764.17 Protective as needed 90 11.25 12.50 +0.0/-0.25
3.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 3mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-31264.17 Protective as needed 90 11.25 12.50 +0.0/-0.25
3.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm直径，镀近红外-I膜，1/4λ N-BK7窗口片83-46864.17 Protective as needed 90 11.25 12.50 +0.0/-0.25
3.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Dia., 3mm Thick, NIR II Coated λ/4 N-BK7 Window25-79364.17 Protective as needed 90 11.25 12.50 +0.00/-0.25
3.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
12.5mm方形，未镀膜，1/4λ N-BK7窗口片49-62164.17 Protective as needed 90 11.25 x 11.25 
12.50 x 12.50 3.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm方形，镀氟化镁，1/4λ N-BK7窗口片49-62464.17 Protective as needed 90 11.25 x 11.25 
12.50 x 12.50 3.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Sq., 3mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-29164.17 Protective as needed 90 11.25 x 11.25 
12.50 x 12.50 3.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm方形，镀可见光-近红外膜，1/4λ N-BK7窗口片49-63264.17 Protective as needed 90 11.25 x 11.25 
12.50 x 12.50 3.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm方形，镀可见光0°膜，1/4λ N-BK7窗口片49-62864.17 Protective as needed 90 11.25 x 11.25 
12.50 x 12.50 3.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Sq., 3mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-31364.17 Protective as needed 90 11.25 x 11.25 
12.50 x 12.50 3.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm 方形，镀近红外-I膜，1/4λ N-BK7窗口片83-46964.17 Protective as needed 90 11.25 x 11.25 
12.50 x 12.50 3.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.5mm Sq., 3mm Thick, NIR II Coated λ/4 N-BK7 Window25-79464.17 Protective as needed 90 11.25 x 11.25 
12.50 x 12.50 +0.00/-0.253.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
12.7mm Dia., 3mm Thick, Uncoated λ/4 N-BK7 Window15-42364.17 Protective as needed 90 11.43 12.70 +0.0/-0.25
3.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.7mm Dia., 3mm Thick, MgF2 Coated λ/4 N-BK7 Window15-42764.17 Protective as needed 90 11.43 12.70 +0.0/-0.25
3.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.7mm Dia., 3mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window15-78764.17 Protective as needed 90 11.43 12.70 +0.0/-0.25
3.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.7mm Dia., 3mm Thick, VIS-NIR Coated λ/4 N-BK7 Window15-43564.17 Protective as needed 90 11.43 12.70 +0.0/-0.25
3.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.7mm Dia., 3mm Thick, VIS 0° Coated λ/4 N-BK7 Window15-43164.17 Protective as needed 90 11.43 12.70 +0.0/-0.25
3.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.7mm Dia., 3mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window15-79164.17 Protective as needed 90 11.43 12.70 +0.0/-0.25
3.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.7mm Dia., 3mm Thick, NIR I Coated λ/4 N-BK7 Window15-43964.17 Protective as needed 90 11.43 12.70 +0.0/-0.25
3.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
12.7mm Dia., 3mm Thick, NIR II Coated λ/4 N-BK7 Window25-79564.17 Protective as needed 90 11.43 12.70 +0.00/-0.25
3.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
15mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window20-50364.17 Protective as needed 90 13.50 15.00 +0.00/-0.25
1.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm Dia., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-36064.17 Protective as needed 90 13.50 15.00 +0.00/-0.25
1.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm Dia., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-44864.17 Protective as needed 90 13.50 15.00 +0.00/-0.25
1.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm Dia., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-40464.17 Protective as needed 90 13.50 15.00 +0.00/-0.25
1.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm Dia., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-38264.17 Protective as needed 90 13.50 15.00 +0.00/-0.25
1.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm Dia., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-47064.17 Protective as needed 90 13.50 15.00 +0.00/-0.25
1.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm Dia., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-42664.17 Protective as needed 90 13.50 15.00 +0.00/-0.25
1.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm Dia., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-79664.17 Protective as needed 90 13.50 15.00 +0.00/-0.25
1.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
15mm 直径， 未镀膜，1/4波长表面精度，N-BK7窗口片45-57564.17 Protective as needed 90 13.50 15.00 +0.0/-0.25
3.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm 直径，镀氟化镁膜，1/4波长表面精度，N-BK7窗口片45-57664.17 Protective as needed 90 13.50 15.00 +0.0/-0.25
3.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm Dia., 3mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-29264.17 Protective as needed 90 13.50 15.00 +0.0/-0.25
3.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm直径，镀可见光-近红外膜， 1/4波长表面精度N-BK7窗口片45-65964.17 Protective as needed 90 13.50 15.00 +0.0/-0.25
3.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径15mm 可见光 0°镀膜， 1/4λ N-BK7 窗口片47-51864.17 Protective as needed 90 13.50 15.00 +0.0/-0.25
3.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm Dia., 3mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-31464.17 Protective as needed 90 13.50 15.00 +0.0/-0.25
3.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm直径，镀近红外-I膜，1/4λ N-BK7窗口片83-47064.17 Protective as needed 90 13.50 15.00 +0.0/-0.25
3.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
15mm Dia., 3mm Thick, NIR II Coated λ/4 N-BK7 Window25-79764.17 Protective as needed 90 13.50 15.00 +0.00/-0.25
3.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
20mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window20-50464.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
1.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-36164.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
1.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-44964.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
1.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-40564.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
1.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-38364.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
1.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-47164.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
1.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-42764.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
1.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-79864.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
1.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
20mm Dia., 2mm Thick, Uncoated λ/4 N-BK7 Window20-50764.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 2mm Thick, MgF2 Coated λ/4 N-BK7 Window23-36264.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 2mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-45064.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 2mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-40664.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 2mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-38464.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 2mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-47264.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 2mm Thick, NIR I Coated λ/4 N-BK7 Window23-42864.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-79964.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
2.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
20mm 直径， 未镀膜，1/4波长表面精度，N-BK7窗口片45-57764.17 Protective as needed 90 18.00 20.00 +0.0/-0.25
3.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm 直径，镀氟化镁膜，1/4波长表面精度，N-BK7窗口片45-57864.17 Protective as needed 90 18.00 20.00 +0.0/-0.25
3.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 3mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-29364.17 Protective as needed 90 18.00 20.00 +0.0/-0.25
3.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm直径，镀可见光-近红外膜， 1/4波长表面精度N-BK7窗口片45-66064.17 Protective as needed 90 18.00 20.00 +0.0/-0.25
3.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径20mm 可见光 0°镀膜， 1/4λ N-BK7 窗口片47-51964.17 Protective as needed 90 18.00 20.00 +0.0/-0.25
3.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 3mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-31564.17 Protective as needed 90 18.00 20.00 +0.0/-0.25
3.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm直径，镀近红外-I膜，1/4λ N-BK7窗口片83-47164.17 Protective as needed 90 18.00 20.00 +0.0/-0.25
3.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
20mm Dia., 3mm Thick, NIR II Coated λ/4 N-BK7 Window25-80064.17 Protective as needed 90 18.00 20.00 +0.00/-0.25
3.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
WIND 1/4 WAVE BK7 25mm dia x1mm T UNCTD36-99164.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
1.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x1mm T MGF236-99464.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
1.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 1mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-29464.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
1.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x1mm T VISNIR36-99764.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
1.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x1mm T VIS036-99664.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
1.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 1mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-31664.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
1.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x1mm T NIRI36-99564.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
1.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-80164.17 Protective as needed 90 22.50 25.00 +0.00/-0.25
1.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
25mm Dia., 1mm Thick, SWIR AR Coated λ/4 N-BK7 Window70-28164.17 Protective as needed 90 22.50 25.00 +0.00/-0.25
1.00 ±0.10BBAR (1650-3000nm) Ravg <1% @ 1650 - 3000nm @ 0° AOI Rabs <2% @ 1650 - 3000nm @ 0° AOI 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 1mm Thick, Uncoated λ/4 N-BK7 Window20-55664.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.251.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-37064.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.251.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-45864.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.251.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-41464.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.251.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-39264.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.251.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-48064.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.251.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-43664.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.251.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-80264.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.251.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
WIND 1/4 WAVE BK7 25mm dia x2mm T UNCTD36-99264.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x2mm T MGF236-99864.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 2mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-29564.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x2mm T VISNIR37-00264.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x2mm T VIS037-00164.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 2mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-31764.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x2mm T NIRI36-99964.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-80364.17 Protective as needed 90 22.50 25.00 +0.00/-0.25
2.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
25mm Sq., 2mm Thick, Uncoated λ/4 N-BK7 Window20-57364.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.252.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 2mm Thick, MgF2 Coated λ/4 N-BK7 Window23-37164.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.252.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 2mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-45964.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.252.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 2mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-41564.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.252.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 2mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-39364.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.252.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 2mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-48164.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.252.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 2mm Thick, NIR I Coated λ/4 N-BK7 Window23-43764.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.252.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-80464.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.252.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
WIND 1/4 WAVE BK7 25mm dia x3mm T UNCTD36-99364.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
3.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x3mm T MGF237-00364.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
3.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 3mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-29664.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
3.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x3mm T VISNIR37-00664.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
3.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x3mm T VIS037-00564.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
3.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 3mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-31864.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
3.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WIND 1/4 WAVE BK7 25mm dia x3mm T NIRI37-00464.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
3.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 3mm Thick, NIR II Coated λ/4 N-BK7 Window25-80564.17 Protective as needed 90 22.50 25.00 +0.00/-0.25
3.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
25mm Dia., 3mm Thick, SWIR AR Coated λ/4 N-BK7 Window70-28264.17 Protective as needed 90 22.50 25.00 +0.00/-0.25
3.00 ±0.10BBAR (1650-3000nm) Ravg <1% @ 1650 - 3000nm @ 0° AOI Rabs <2% @ 1650 - 3000nm @ 0° AOI 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径25mm， 入/4 N-BK7 不镀膜窗口片45-07664.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
4.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径25mm，镀MgF2，入/4 N-BK7窗口片45-25864.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
4.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 4mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-29764.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
4.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm直径，镀可见光-近红外膜， 1/4波长表面精度N-BK7窗口片45-66164.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
4.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径25mm 可见光 0°镀膜， 1/4λ N-BK7 窗口片47-52064.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
4.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 4mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-31964.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
4.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm直径，镀近红外-I膜，1/4λ N-BK7窗口片83-47264.17 Protective as needed 90 22.50 25.00 +0.0/-0.25
4.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Dia., 4mm Thick, NIR II Coated λ/4 N-BK7 Window25-80664.17 Protective as needed 90 22.50 25.00 +0.00/-0.25
4.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
25mm方形，未镀膜，1/4λ N-BK7窗口片49-62264.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 4.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm方形，镀氟化镁，1/4λ N-BK7窗口片49-62564.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 4.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 4mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-29864.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 4.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm方形，镀可见光-近红外膜，1/4λ N-BK7窗口片49-63364.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 4.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm方形，镀可见光0°膜，1/4λ N-BK7窗口片49-62964.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 4.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 4mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-32064.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 4.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm 方形，镀近红外-I膜，1/4λ N-BK7窗口片83-47364.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 4.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25mm Sq., 4mm Thick, NIR II Coated λ/4 N-BK7 Window25-80764.17 Protective as needed 90 22.50 x 22.50 
25.00 x 25.00 +0.00/-0.254.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
25 x 35mm, 3mm Thick, Uncoated λ/4 N-BK7 Window29-30164.17 Protective as needed 90 22.50 x 31.50 
25.00 x 35.00 +0.00/-0.253.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.2 x 35.6mm, 1mm Thick, Uncoated λ/4 N-BK7 Window29-30264.17 Protective as needed 90 22.68 x 32.04 
25.20 x 35.60 +0.00/-0.251.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window20-51264.17 Protective as needed 90 22.86 25.40 +0.00/-0.25
1.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-36364.17 Protective as needed 90 22.86 25.40 +0.00/-0.25
1.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-45164.17 Protective as needed 90 22.86 25.40 +0.00/-0.25
1.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-40764.17 Protective as needed 90 22.86 25.40 +0.00/-0.25
1.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-38564.17 Protective as needed 90 22.86 25.40 +0.00/-0.25
1.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-47364.17 Protective as needed 90 22.86 25.40 +0.00/-0.25
1.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-42964.17 Protective as needed 90 22.86 25.40 +0.00/-0.25
1.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-80864.17 Protective as needed 90 22.86 25.40 +0.00/-0.25
1.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
25.4mm Dia., 2mm Thick, Uncoated λ/4 N-BK7 Window15-42464.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 2mm Thick, MgF2 Coated λ/4 N-BK7 Window15-42864.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 2mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window15-78864.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 2mm Thick, VIS-NIR Coated λ/4 N-BK7 Window15-43664.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 2mm Thick, VIS 0° Coated λ/4 N-BK7 Window15-43264.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 2mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window15-79264.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 2mm Thick, NIR I Coated λ/4 N-BK7 Window15-44064.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-80964.17 Protective as needed 90 22.86 25.40 +0.00/-0.25
2.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
25.4mm Dia., 4mm Thick, Uncoated λ/4 N-BK7 Window15-42564.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
4.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 4mm Thick, MgF2 Coated λ/4 N-BK7 Window15-42964.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
4.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 4mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window15-78964.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
4.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 4mm Thick, VIS-NIR Coated λ/4 N-BK7 Window15-43764.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
4.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 4mm Thick, VIS 0° Coated λ/4 N-BK7 Window15-43364.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
4.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 4mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window15-79364.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
4.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 4mm Thick, NIR I Coated λ/4 N-BK7 Window15-44164.17 Protective as needed 90 22.86 25.40 +0.0/-0.25
4.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
25.4mm Dia., 4mm Thick, NIR II Coated λ/4 N-BK7 Window25-81064.17 Protective as needed 90 22.86 25.40 +0.00/-0.25
4.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
30mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window20-52864.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
1.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-36464.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
1.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-45264.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
1.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-40864.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
1.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-38664.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
1.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-47464.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
1.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-43064.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
1.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-81164.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
1.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
30mm Dia., 2mm Thick, Uncoated λ/4 N-BK7 Window20-53064.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 2mm Thick, MgF2 Coated λ/4 N-BK7 Window23-36564.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 2mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-45364.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 2mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-40964.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 2mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-38764.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 2mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-47564.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 2mm Thick, NIR I Coated λ/4 N-BK7 Window23-43164.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-81264.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
2.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
30mm 直径， 未镀膜，1/4波长表面精度，N-BK7窗口片45-57964.17 Protective as needed 90 27.00 30.00 +0.0/-0.25
4.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm 直径，镀氟化镁膜，1/4波长表面精度，N-BK7窗口片45-58064.17 Protective as needed 90 27.00 30.00 +0.0/-0.25
4.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 4mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-29964.17 Protective as needed 90 27.00 30.00 +0.0/-0.25
4.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm直径，镀可见光-近红外膜，1/4λ N-BK7窗口片48-44564.17 Protective as needed 90 27.00 30.00 +0.0/-0.25
4.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径30mm 可见光 0°镀膜， 1/4λ N-BK7 窗口片47-52164.17 Protective as needed 90 27.00 30.00 +0.0/-0.25
4.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 4mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-32164.17 Protective as needed 90 27.00 30.00 +0.0/-0.25
4.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm直径，镀近红外-I膜，1/4λ N-BK7窗口片83-47464.17 Protective as needed 90 27.00 30.00 +0.0/-0.25
4.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
30mm Dia., 4mm Thick, NIR II Coated λ/4 N-BK7 Window25-81364.17 Protective as needed 90 27.00 30.00 +0.00/-0.25
4.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
35mm Sq., 1mm Thick, Uncoated λ/4 N-BK7 Window20-58464.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.251.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-37264.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.251.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-46064.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.251.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-41664.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.251.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-39464.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.251.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-48264.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.251.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-43864.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.251.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-81464.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.251.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
35mm Sq., 2mm Thick, Uncoated λ/4 N-BK7 Window20-58664.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.252.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 2mm Thick, MgF2 Coated λ/4 N-BK7 Window23-37364.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.252.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 2mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-46164.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.252.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 2mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-41764.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.252.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 2mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-39564.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.252.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 2mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-48364.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.252.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 2mm Thick, NIR I Coated λ/4 N-BK7 Window23-43964.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.252.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-81564.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.252.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
35mm方形，未镀膜，1/4λ N-BK7窗口片49-47064.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 3.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm方形，镀氟化镁，1/4λ N-BK7窗口片49-62664.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 3.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 3mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-30064.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 3.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm方形，镀可见光-近红外膜，1/4λ N-BK7窗口片49-63464.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 3.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm方形，镀可见光0°膜，1/4λ N-BK7窗口片49-63064.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 3.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 3mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-32264.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 3.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm 方形，镀近红外-I膜，1/4λ N-BK7窗口片83-47564.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 3.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
35mm Sq., 3mm Thick, NIR II Coated λ/4 N-BK7 Window25-81664.17 Protective as needed 90 31.50 x 31.50 
35.00 x 35.00 +0.00/-0.253.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
40mm Dia., 1mm Thick, Uncoated λ/4 N-BK7 Window20-53264.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
1.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-36664.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
1.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-45464.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
1.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-41064.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
1.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-38864.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
1.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-47664.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
1.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-43264.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
1.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-81764.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
1.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
40mm Dia., 2mm Thick, Uncoated λ/4 N-BK7 Window20-53664.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 2mm Thick, MgF2 Coated λ/4 N-BK7 Window23-36764.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 2mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-45564.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 2mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-41164.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 2mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-38964.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 2mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-47764.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 2mm Thick, NIR I Coated λ/4 N-BK7 Window23-43364.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-81864.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
2.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
40mm 直径， 未镀膜，1/4波长表面精度，N-BK7窗口片45-58164.17 Protective as needed 90 36.00 40.00 +0.0/-0.25
4.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm 直径，镀氟化镁膜，1/4波长表面精度，N-BK7窗口片45-58264.17 Protective as needed 90 36.00 40.00 +0.0/-0.25
4.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 4mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-30164.17 Protective as needed 90 36.00 40.00 +0.0/-0.25
4.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm直径，镀可见光-近红外膜，1/4λ N-BK7窗口片48-44664.17 Protective as needed 90 36.00 40.00 +0.0/-0.25
4.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径40mm 可见光 0°镀膜， 1/4λ N-BK7 窗口片47-52264.17 Protective as needed 90 36.00 40.00 +0.0/-0.25
4.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 4mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-32364.17 Protective as needed 90 36.00 40.00 +0.0/-0.25
4.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm直径，镀近红外-I膜，1/4λ N-BK7窗口片83-47664.17 Protective as needed 90 36.00 40.00 +0.0/-0.25
4.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
40mm Dia., 4mm Thick, NIR II Coated λ/4 N-BK7 Window25-81964.17 Protective as needed 90 36.00 40.00 +0.00/-0.25
4.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
BK7, 1/4 Wave, 50mm dia x 1.0mm T Window34-42764.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
1.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax1mm T MGF237-00764.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
1.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 1mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-30264.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
1.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax1mm T VISNIR37-01064.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
1.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax1mm T VIS037-00964.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
1.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 1mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-32464.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
1.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax1mm T NIRI37-00864.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
1.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-82064.17 Protective as needed 90 45.00 50.00 +0.00/-0.25
1.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
50mm Dia., 1mm Thick, SWIR AR Coated λ/4 N-BK7 Window70-28364.17 Protective as needed 90 45.00 50.00 +0.00/-0.25
3.00 ±0.10BBAR (1650-3000nm) Ravg <1% @ 1650 - 3000nm @ 0° AOI Rabs <2% @ 1650 - 3000nm @ 0° AOI 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 1mm Thick, Uncoated λ/4 N-BK7 Window20-59264.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.251.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 1mm Thick, MgF2 Coated λ/4 N-BK7 Window23-37464.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.251.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 1mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-46264.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.251.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 1mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-41864.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.251.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 1mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-39664.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.251.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 1mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-48464.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.251.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 1mm Thick, NIR I Coated λ/4 N-BK7 Window23-44064.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.251.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 1mm Thick, NIR II Coated λ/4 N-BK7 Window25-82164.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.251.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
BK7, 1/4 Wave, 50mm dia x 2.0mm T Window34-42864.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax2mm T MGF237-01164.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 2mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-30364.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax2mm T VISNIR37-01464.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax2mm T VIS037-01364.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 2mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-32564.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax2mm T NIRI37-01264.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-82264.17 Protective as needed 90 45.00 50.00 +0.00/-0.25
2.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
50mm Sq., 2mm Thick, Uncoated λ/4 N-BK7 Window20-59664.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.252.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 2mm Thick, MgF2 Coated λ/4 N-BK7 Window23-37564.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.252.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 2mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-46364.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.252.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 2mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-41964.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.252.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 2mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-39764.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.252.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 2mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-48564.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.252.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 2mm Thick, NIR I Coated λ/4 N-BK7 Window23-44164.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.252.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-82364.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.252.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
BK7, 1/4 Wave, 50mm dia x 3.0mm T Window34-42964.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
3.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax3mm T MGF237-01564.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
3.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 3mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-30464.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
3.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax3mm T VISNIR37-01864.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
3.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax3mm T VIS037-01764.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
3.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 3mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-32664.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
3.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax3mm T NIRI37-01664.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
3.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 3mm Thick, NIR II Coated λ/4 N-BK7 Window25-82464.17 Protective as needed 90 45.00 50.00 +0.00/-0.25
3.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
50mm 直径， 未镀膜，1/4波长表面精度，N-BK7窗口片45-58364.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
4.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm 直径，镀氟化镁膜，1/4波长表面精度，N-BK7窗口片45-58464.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
4.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 4mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-30564.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
4.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm直径，镀可见光-近红外膜，1/4λ N-BK7窗口片48-44764.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
4.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
直径50mm 可见光 0°镀膜， 1/4λ N-BK7 窗口片47-52364.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
4.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 4mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-32764.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
4.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm直径，镀近红外-I膜，1/4λ N-BK7窗口片83-47764.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
4.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 4mm Thick, NIR II Coated λ/4 N-BK7 Window25-82564.17 Protective as needed 90 45.00 50.00 +0.00/-0.25
4.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
50mm 正方形. 不镀膜， 1/4λ N-BK7 窗口片47-94464.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 4.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm 正方形. MgF2 镀膜， 1/4λ N-BK7 窗口片47-94564.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 4.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 4mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-30764.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 4.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm 正方形. VIS-NIR 镀膜， 1/4λ N-BK7 窗口片47-94764.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 4.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm 正方形. VIS 0°镀膜， 1/4λ N-BK7 窗口片47-94664.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 4.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 4mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-32964.17 Protective as needed 90 

50.00 x 50.00 4.00 YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm 方形，镀近红外-I膜，1/4λ N-BK7窗口片83-47864.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 4.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Sq., 4mm Thick, NIR II Coated λ/4 N-BK7 Window25-82664.17 Protective as needed 90 45.00 x 45.00 
50.00 x 50.00 +0.00/-0.254.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
BK7, 1/4 Wave, 50mm dia x 6.0mm T Window34-43064.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
6.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax6mm T MGF237-01964.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
6.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 6mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window13-30664.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
6.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax6mm T VISNIR37-02264.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
6.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax6mm T VIS037-02164.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
6.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 6mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window13-32864.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
6.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 50mm diax6mm T NIRI37-02064.17 Protective as needed 90 45.00 50.00 +0.0/-0.25
6.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50mm Dia., 6mm Thick, NIR II Coated λ/4 N-BK7 Window25-82764.17 Protective as needed 90 45.00 50.00 +0.00/-0.25
6.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
50.8mm Dia., 4mm Thick, Uncoated λ/4 N-BK7 Window15-42664.17 Protective as needed 90 45.72 50.80 +0.0/-0.25
4.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50.8mm Dia., 4mm Thick, MgF2 Coated λ/4 N-BK7 Window15-43064.17 Protective as needed 90 45.72 50.80 +0.0/-0.25
4.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50.8mm Dia., 4mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window15-79064.17 Protective as needed 90 45.72 50.80 +0.0/-0.25
4.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50.8mm Dia., 4mm Thick, VIS-NIR Coated λ/4 N-BK7 Window15-43864.17 Protective as needed 90 45.72 50.80 +0.0/-0.25
4.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50.8mm Dia., 4mm Thick, VIS 0° Coated λ/4 N-BK7 Window15-43464.17 Protective as needed 90 45.72 50.80 +0.0/-0.25
4.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50.8mm Dia., 4mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window15-79464.17 Protective as needed 90 45.72 50.80 +0.0/-0.25
4.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50.8mm Dia., 4mm Thick, NIR I Coated λ/4 N-BK7 Window15-44264.17 Protective as needed 90 45.72 50.80 +0.0/-0.25
4.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
50.8mm Dia., 4mm Thick, NIR II Coated λ/4 N-BK7 Window25-82864.17 Protective as needed 90 45.72 50.80 +0.00/-0.25
4.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
75mm Dia., 1mm Thick, SWIR AR Coated λ/4 N-BK7 Window70-28464.17 Protective as needed 90 67.50 75.00 +0.00/-0.25
4.00 ±0.10BBAR (1650-3000nm) Ravg <1% @ 1650 - 3000nm @ 0° AOI Rabs <2% @ 1650 - 3000nm @ 0° AOI 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Dia., 2mm Thick, Uncoated λ/4 N-BK7 Window20-53864.17 Protective as needed 90 67.50 75.00 +0.00/-0.25
2.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Dia., 2mm Thick, MgF2 Coated λ/4 N-BK7 Window23-36864.17 Protective as needed 90 67.50 75.00 +0.00/-0.25
2.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Dia., 2mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-45664.17 Protective as needed 90 67.50 75.00 +0.00/-0.25
2.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Dia., 2mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-41264.17 Protective as needed 90 67.50 75.00 +0.00/-0.25
2.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Dia., 2mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-39064.17 Protective as needed 90 67.50 75.00 +0.00/-0.25
2.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Dia., 2mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-47864.17 Protective as needed 90 67.50 75.00 +0.00/-0.25
2.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Dia., 2mm Thick, NIR I Coated λ/4 N-BK7 Window23-43464.17 Protective as needed 90 67.50 75.00 +0.00/-0.25
2.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Dia., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-82964.17 Protective as needed 90 67.50 75.00 +0.00/-0.25
2.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
75mm Sq., 2mm Thick, Uncoated λ/4 N-BK7 Window20-59864.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 +0.00/-0.252.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Sq., 2mm Thick, MgF2 Coated λ/4 N-BK7 Window23-37664.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 +0.00/-0.252.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Sq., 2mm Thick, VIS-EXT Coated λ/4 N-BK7 Window23-46464.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 +0.00/-0.252.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Sq., 2mm Thick, VIS-NIR Coated λ/4 N-BK7 Window23-42064.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 +0.00/-0.252.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Sq., 2mm Thick, VIS 0° Coated λ/4 N-BK7 Window23-39864.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 +0.00/-0.252.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Sq., 2mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window23-48664.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 +0.00/-0.252.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Sq., 2mm Thick, NIR I Coated λ/4 N-BK7 Window23-44264.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 +0.00/-0.252.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Sq., 2mm Thick, NIR II Coated λ/4 N-BK7 Window25-83064.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 +0.00/-0.252.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
窗口片，N-BK7基底，75mm直径，不镀膜，表面精度1/4波长62-60664.17 Protective as needed 90 67.50 75.00 +0.0/-0.25
4.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
窗口片，N-BK7基底，75mm直径，氟化镁镀膜，表面精度1/4波长62-60864.17 Protective as needed 90 67.50 75.00 +0.0/-0.25
4.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Dia., 4mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window15-79564.17 Protective as needed 90 67.50 75.00 +0.0/-0.25
4.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm直径，镀可见光-近红外膜，1/4λ N-BK7窗口片84-35964.17 Protective as needed 90 67.50 75.00 +0.0/-0.25
4.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 75mm diax4mm T VIS037-07064.17 Protective as needed 90 67.50 75.00 +0.0/-0.25
4.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Dia., 4mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window15-79764.17 Protective as needed 90 67.50 75.00 +0.0/-0.25
4.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 75mm diax4mm T NIRI37-07364.17 Protective as needed 90 67.50 75.00 +0.0/-0.25
4.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Dia., 4mm Thick, NIR II Coated λ/4 N-BK7 Window25-83164.17 Protective as needed 90 67.50 75.00 +0.00/-0.25
4.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
窗口片，N-BK7基底，75mm方形，不镀膜，表面精度1/4波长62-60764.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 4.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
窗口片，N-BK7基底，75mm方形，氟化镁镀膜，表面精度1/4波长62-60964.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 4.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Sq., 4mm Thick, VIS-EXT Coated, λ/4 N-BK7 Window15-79664.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 4.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 75mm Sq x4mm T VISNIR37-07264.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 4.00 ±0.20VIS-NIR (400-1000nm) Rabs≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 75mm Sq x4mm T VIS037-07164.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 4.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Sq., 4mm Thick, YAG-BBAR Coated, λ/4 N-BK7 Window15-79864.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 4.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
WINDOW 1/4 WVE BK7 75mm Sq x4mm T NIRI37-07464.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 4.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
75mm Sq., 4mm Thick, NIR II Coated λ/4 N-BK7 Window25-83264.17 Protective as needed 90 67.50 x 67.50 
75.00 x 75.00 +0.00/-0.254.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70 °C) 8.3 (+20 to +300 °C) 
100mm Dia., 6mm Thick, Uncoated λ/4 N-BK7 Window11-85664.17 Protective as needed 90 90.00 100.00 +0.0/-0.25
6.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
100mm Sq., 6mm Thick, Uncoated λ/4 N-BK7 Window70-69964.17 Protective as needed 90 90 
100 x 100 +0/-0.256.00 0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
100mm Dia., 6mm Thick, MgF2 Coated λ/4 N-BK7 Window11-85964.17 Protective as needed 90 90.00 100.00 +0.0/-0.25
6.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
100mm Dia., 6mm Thick, VIS-NIR Coated λ/4 N-BK7 Window26-67564.17 Protective as needed 90 90.00 100.00 +0.0/-0.25
6.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
100mm Dia., 6mm Thick, VIS 0° Coated λ/4 N-BK7 Window17-29864.17 Protective as needed 90 
100.00 +0.0/-0.25
6.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
100mm Dia., 6mm Thick, VIS-EXT Coated λ/4 N-BK7 Window29-59064.17 Protective as needed 90 90.00 100.00 +0.0/-0.25
6.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
100mm Dia., 6mm Thick, NIR I Coated λ/4 N-BK7 Window17-29564.17 Protective as needed 90 
100.00 +0.0/-0.25
6.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
100mm Dia., 6mm Thick, NIR II Coated λ/4 N-BK7 Window29-58964.17 Protective as needed 90 90.00 100.00 +0.0/-0.25
6.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
100mm Dia., 6mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window29-59164.17 Protective as needed 90 90.00 100.00 +0.0/-0.25
6.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs<0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
125mm Dia., 8mm Thick, Uncoated λ/4 N-BK7 Window11-85764.17 Protective as needed 90 112.50 125.00 +0.0/-0.25
8.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
125mm Dia., 8mm Thick, MgF2 Coated λ/4 N-BK7 Window11-86064.17 Protective as needed 90 112.50 125.00 +0.0/-0.25
8.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
125mm Dia., 8mm Thick, VIS-NIR Coated λ/4 N-BK7 Window26-67664.17 Protective as needed 90 112.50 125.00 +0.0/-0.25
8.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
125mm Dia., 8mm Thick, VIS 0° Coated λ/4 N-BK7 Window17-29964.17 Protective as needed 90 
125.00 +0.0/-0.25
8.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
125mm Dia., 8mm Thick, VIS-EXT Coated λ/4 N-BK7 Window29-59364.17 Protective as needed 90 112.50 125.00 +0.0/-0.25
8.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
125mm Dia., 8mm Thick, NIR I Coated λ/4 N-BK7 Window17-29664.17 Protective as needed 90 
125.00 +0.0/-0.25
8.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
125mm Dia., 8mm Thick, NIR II COated λ/4 N-BK7 Window29-59264.17 Protective as needed 90 112.50 125.00 +0.0/-0.25
8.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
125mm Dia., 8mm Thick, YAG-BBAR Coated λ/4 N-BK7 Window29-59464.17 Protective as needed 90 112.50 125.00 +0.0/-0.25
8.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
150mm Dia., 10mm Thick, Uncoated λ/4 N-BK7 Window11-85864.17 Protective as needed 90 135.00 150.00 +0.0/-0.25
10.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
150mm Dia., 10mm Thick, MgF2 Coated λ/4 N-BK7 Window11-86164.17 Protective as needed 90 135.00 150.00 +0.0/-0.25
10.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
150mm Dia., 10mm Thick, VIS-NIR Coated λ/4 N-BK7 Window26-67764.17 Protective as needed 90 135.00 150.00 +0.0/-0.25
10.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
150mm Dia., 10mm Thick, VIS 0° Coated λ/4 N-BK7 Window17-30064.17 Protective as needed 90 
150.00 +0.0/-0.25
10.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
150mm Dia., 10mm Thick, VIS-EXT Coated λ/4 N-BK7 Window29-59664.17 Protective as needed 90 135.00 150.00 +0.0/-0.25
10.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
150mm Dia., 10mm Thick, NIR I Coated λ/4 N-BK7 Window17-29764.17 Protective as needed 90 
150.00 +0.0/-0.25
10.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
150mm Dia., 10mm Thick, NIR II Coated λ/4 N-BK7 Window29-59564.17 Protective as needed 90 135.00 150.00 +0.0/-0.25
10.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
150mm Dia., 10mm Thick, YAG_BBAR Coated λ/4 N-BK7 Window29-59764.17 Protective as needed 90 135.00 150.00 +0.0/-0.25
10.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
200m Dia., 10mm Thick, Uncoated λ/4 N-BK7 Window26-47564.17 Protective as needed 90 180 200.00 +0.00/-0.25
10.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
200m Dia., 10mm Thick, MgF2 λ/4 N-BK7 Window29-59864.17 Protective as needed 90 180 200.00 +0.0/-0.25
10.00 ±0.20MgF2 (400-700nm) Ravg ≤1.75% @ 400 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
200m Dia., 10mm Thick, VIS 0° Coated λ/4 N-BK7 Window26-67964.17 Protective as needed 90 180 200.00 +0.00/-0.25
10.00 ±0.20VIS 0° (425-675nm) Ravg ≤0.4% @ 425 - 675nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
200m Dia., 10mm Thick, VIS-EXT Coated λ/4 N-BK7 Window29-60164.17 Protective as needed 90 180 200.00 +0.0/-0.25
10.00 ±0.20VIS-EXT (350-700nm) Ravg <0.5% @ 350 - 700nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
200m Dia., 10mm Thick, VIS-NIR λ/4 N-BK7 Window29-60264.17 Protective as needed 90 180 200.00 +0.0/-0.25
10.00 ±0.20VIS-NIR (400-1000nm) Rabs ≤0.25% @ 880nm Ravg ≤1.25% @ 400 - 870 nm Ravg ≤1.25% @ 890 - 1000nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
200m Dia., 10mm Thick, NIR I λ/4 N-BK7 Window29-59964.17 Protective as needed 90 180 200.00 +0.0/-0.25
10.00 ±0.20NIR I (600-1050nm) Ravg ≤0.5% @ 600 - 1050nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
200m Dia., 10mm Thick, NIR II λ/4 N-BK7 Window29-60064.17 Protective as needed 90 180 200.00 +0.0/-0.25
10.00 ±0.20NIR II (750-1550nm) Rabs ≤1.5% @ 750 - 800nm Rabs ≤1.0% @ 800 - 1550nm Ravg ≤0.7% @ 750 - 1550nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
200m Dia., 10mm Thick, YAG-BBAR λ/4 N-BK7 Window29-60364.17 Protective as needed 90 180 200.00 +0.0/-0.25
10.00 ±0.20YAG-BBAR (500-1100nm) Rabs <0.25% @ 532nm   Rabs <0.25% @ 1064nm   Ravg <1.0% @ 500 - 1100nm 7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
250m Dia., 12.5mm Thick, Uncoated λ/4 N-BK7 Window29-93664.17 Protective as needed 90 225.00 250.00 +0.00/-0.25
12.50 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C) 
300m Dia., 15mm Thick, Uncoated λ/4 N-BK7 Window29-93764.17 Protective as needed 90 270.00 300.00 +0.00/-0.25
15.00 ±0.20Uncoated 
7.1 (-30 to +70°C) 8.3 (+20 to +300°C)