![](/wangzhan/uploads/allimg/171229/1-1G2291111405b.jpg)
Diameter Available
|
2mm--500mm
|
Diameter Tolerance
|
+0/-0.05mm
|
Thickness Tolerance
|
+/-0.05mm
|
Focal Length Tolerance
|
+/-1%
|
Surface Accuracy
|
L/4 irregularity @632.8nm
|
Surface Quality
|
20-10 S/D
|
Centration
|
<3 arc min
|
Clear Aperture
|
>90%
|
Bevel
|
Protective bevel
|
Material
|
BK7, Fused silica, and other optical glass
|
Coating
|
AR coating or BBAR
|
![](/wangzhan/uploads/allimg/171229/1-1G22911114J58.gif)