Defines a constant 90° beam deviation regardless of the prism's orientation. This invariance makes them ideal for precision alignment and surveying applications.
Processing range: 5 mm- 300 mm ±0.1 mm
Dimensional tolerance: ±0.05mm
Transmissivity: 90％-99％
Lens Alignment Error: ≤3 arc min
A penta prism is used to deviate a light beam by 90 degrees. It neither inverts nor reverses the image. Penta prisms are extremely useful in alignment systems because they define a right angle with great precision, independent of the angle of incidence. A light ray entering one face undergoes two reflections inside the prism for a total of 270 degrees, and then exits from an adjacent face at an exact 90-degree angle. Operating as a turning mirror, the penta prism is insensitive to alignment.
| Material | K9, BK7 |
| Dimensional tolerance | ±0.05 mm |
| Angle error | <3 arc min |
| Surface accuracy | λ/4@ 633nm or λ/10@633nm |
| Surface quality | 60/40 or 20/10 |
| Effective Caliber | 70% |
| Chamfer/Beve | <0.2*45° |
| Coating | Customizable upon request: (AR /HR /PR) |
