Specifications:
| Material | N-BK7 | Range of Size | / |
| Dimension Tolerance | ±0.2mm | Surface Quality | 60/40 S/D |
| Clear Aperture | >90% | Flatness | <λ/4@632.8nm |
| Angle Tolerance | <30arc seconds | Chamfer | Protective<0.5mmx45° |
| Coating | Protected Aluminum reflective coating Single Layer MgF2 AR coating at visible |
Penta prisms can deviate the angle of incident beam or image to exact 90°without any inverting and reversing, whether the angle of incoming beam is. This kind of prisms is widely used in optical observation system and measuring applications.
