|  | Value | 
| Material | BK7, Zerodue, Pyrex | 
| Center Wavelength | N.A | 
| Transmission Band | N.A | 
| FWHM Bandwidth  (nominal) | N.A | 
| Blocking Band 1 | Rs(avg)>99%,Rp(avg)>98% @488-700nm | 
| Blocking Band 2 |  | 
| Blocking Band 3 |  | 
| P polarization |  | 
| S polarization |  | 
| Angle of Incidence | AOI=0°-45°, Collimated Light | 
| Optical Damage Threshold |  | 
| Diameter | 25.4mm, 50.8 mm or specific size | 
| Diameter Tolerance | +/ -0.25 mm | 
| Substrate Thickness | 13 mm | 
| Substrate Thickness Tolerance | +/ -0.01 mm | 
| Substrate Effective Index | 1.52 | 
| Centration | 3 arc minutes | 
| Clear Aperture | 0.85 | 
| Surface Flatness | λ/20 | 
| Surface Quality | 20-15 scratch and dig | 
| Bevel | N.A |