Specifications:
| Material | N-BK7, UV Fused Silica | 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 or custom |
Penta prism is an optical glass block comprising five flat surfaces, and the entrance and exit faces form a right angle. It is often used to deviate a light beam by 90 degrees without inverting or reversing the image. The 90-degree deviation angle is a fixed value independent of the entrance angles, which renders penta prisms advantageous in operation context requiring an exact 90° deviation without the need for precise orientation of the prism. The bulk construction of a penta prism also implies it is bound to be more stable than a group consisting of two mirrors. Penta prisms are essential components in optical observation systems and measuring instruments.
Hangzhou Shalom EO offers Custom Penta Prisms with a wide operating wavelength range from UV to IR spectrum. We provide multiple coating options including Protective Aluminum, Single layer MgF2, Multi-layer AR coating, or custom options.
