Parameters

Standard grade

Precision grade

Material

BK7

BK7

Dimensional Tolerance

+0.0/-0.15

+0.0/-0.15

Clear Aperture

>85%

>85%

Surface Quality

S/D=60/40

S/D=20/10

Parallelism

<1 minute

<30 seconds

Wavefront Distortion

1λ per 25mm

 λ/10 per 25mm

Chamfer

0.25mm at 45＜typical

0.25mm at 45＜typical

Coating

Optional

Optional

The regular size for high precision Windows

Part No.

WIN1110

WIN1112

WIN1125

WIN1130

WIN1150

Diameter (mm)

10.0

12.7

25.4

30.0

50.0

Thickness (mm)

6.0

6.0

6.35

6.35

10.0

The regular size for standard Windows 

Part No.

WIN1210

WIN1212

WIN1225

WIN1230

WIN1250

Diameter (mm)

10.0

12.7

25.4

30.0

50.0

Thickness (mm)

3.0

3.0

3.0

4.0

6.0