| Substrate Material: | BK7 optical glass | 
| Outer Diameter: | Dia 12.7, -0.1/0mm | 
| Thickness: | 1.0, +/-0.1mm | 
| Surface Quality: | 40/20 S/D per MIL Standard | 
| Flatness: | Within lambda/4 at 633nm over surface | 
|  |  | 
| Coating Wavelength: | 400-700nm; Non-Polarizing | 
| Angle of Incidence: | 45-deg | 
| Splitting Ratio: | R10% : T90% | 
| Splitting Ratio Tolerance: | <15% over entire wavelength range|Ts-Tp|<15% and |Rs-Rp|<15%
 | 
|  |  | 
| Front SurfaceTransmission(45-deg AOI):
 | T = 90% at 400-700nm (+/-5%) @ 45-deg AOI | 
| Front SurfaceReflection(45-deg AOI):
 | R = 10% at 400-700nm (+/-5%) @ 45-deg AOI | 
| Back Surface AR Coating: | Ravg < 0.5% at 400-700nm | 
| Temperature Range: | -50 to +80 deg |