Optical Material: 
Dimension Tolerance:
Clear Aperture:
Angular Tolerance: 
Surface Quality:
Wavefront Distortion:
Bevel:

BK7 A grade glass 
+0.0,-0.15mm
>90%
±30 arc minutes 
20-10 scratch and dig 
lambda/10 at 632.8nm 
<0.25mm X 45

Technology:
Adhesion & Durability:
Clear Aperture:
Damage Threshold: 
Reflectance (Ravg): 
Rear side AR coate 
Angle of Incidence:

Thermal Evaporation 
Per MIL-C-675A,Insoluble in lab solvent
> 85% of diameter central
> 2 J/cm2, 8 ns pulse, 1064 nm
>99.5% @45 degrees AOI 
R<15%
45 or 0 Degrees