Pentagonal Prisms
PRODUCT CATEGORIES
INOUIRY
Penta prism is a pentagonal prism with four polished faces, two of which are reflective faces and the other two are incident and exit faces. The reflective face of the penta prism is coated with a reflective film and painted black for protection. The penta prism can turn the light 90° without image rotation or mirror reflection, and the 90° turn will not change due to the different positions of the prism, so it is very convenient for assembly.
Penta prism is widely used in levels and rangefinders, etc., and can also be used in SLR cameras.
Technical Parameters with Penta Prism
| Substrate material | H-K9L fine annealed optical glass |
|---|---|
| Dimensional error | +0.0/-0.2mm |
| Surface quality | 60/40 |
| Surface accuracy | λ/10 @ 632.8nm |
| Bevel | <0.25mm×45° |
| Coating | The reflective surface is aluminum-plated + black paint protected, and the incident and exit surfaces are coated with a single layer of MgF2 anti-reflection film |
Penta Prism Stock Parameters
| A (mm) | B (mm) | C (mm) | D (mm) | Beam Deflection Angle |
|---|---|---|---|---|
| 5 | 5 | 5 | 5.45 | 90°+-3′; 90°+-30″ |
| 10 | 10 | 10 | 10.82 | 90°+-30″ |
| 20 | 20 | 20 | 21.65 | 90°+-30″ |
| 30 | 30 | 30 | 32.47 | 90°+-30″ |
| 40 | 40 | 40 | 43.3 | 90°+-30″ |
If you need to purchase stock or customize a Penta Prism, please contact our sales team:
info@corisuns.com
