| Porro Prism | |
 |
|
| Material | BK7, UV grade fused silica, SF11 glass |
| Dimension Tolerance | +0/-0.2mm |
| Angle Tolerance | <5 arc sec |
| Clear Aperture | >80% |
| Flatness | <λ/10@632.8nm |
| Surface Quality | 60/40 scratch and dig |
| Wavefront Distortion | <λ/4@632.8nm |
| Coating | None, available |
