Precision BK7 Windows

Specifications:

Material: BK7 grade A optical glass
Diameter Tolerance: +0.0, -0.15mm
Thickness Width, length tolerance: ± 0.1mm
Clear Aperture: >90%
Parallelism: 1 minute
Surface Quality: 40-20 scratch and dig
Wavefront Distortion: Lambda/4
Protective Bevel

Size (mm)	Thickness (mm)	Uncoated Part No	AR coated 450-950nm(<0.5% R)* Part No.
10.0 Dia.	3.0	WNH0201	WNH0211
16.0 Dia.	3.0	WNH0202	WNH0212
25.0 Dia.	4.0	WNH0203	WNH0213
40.0 Dia.	6.0	WNH0204	WNH0214
50.0 Dia.	6.0	WNH0205	WNH0215
63.0 Dia.	8.0	WNH0206	WNH0216
10.0 x 10.0	3.0	WNH2201
16.0 x 16.0	4.0	WNH2202
25.0 x 25.0	6.0	WNH2203
40.0 x 40.0	6.0	WNH2204
50.0 x 50.0	8.0	WNH2205
16.0 x 10.0	3.0	WNH3201
25.0 x 16.0	4.0	WNH3202
40.0 x 25.0	6.0	WNH3203
63.90 x40.0	8.0	WNH3204

* Also avalable from stock; AR: 630-1100nm and AR: 1100-1600nm

Please contact us for larger quantity factory pricing.