Pentaprism
A penta prism is a frequently used prism, characterized by having one right angle. When a light beam enters through the right-angle surface, it undergoes two internal reflections before exiting from the other right-angle surface. The outgoing light beam is deflected at a 90-degree angle relative to the incoming light beam. Below are the optical path diagram and the actual physical image of the pentagonal prism. The penta prism deflects light by 90º while maintaining the original image orientation without inversion or reversal. Slight movement of the penta prism has minimal impact on the reflected light, making it ideal for defining right angles in optical systems. Its internal reflection does not rely on total internal reflection—two reflective surfaces are coated with reflective film, two transmitting surfaces have anti-reflective coatings, while the fifth face remains optically unused.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | BK7 glass / UV Fused silica |
| Dimension | 3mm~200mm |
| Dimension tolerance | ±0.1mm~±0.05mm |
| Surface quality | 60/40, 40/20, 20/10 |
| Surface flatness | λ/20 – λ/4 |
| Angle tolerance | <30arc sec. ~5arc min |
| Bevel [45°] | <0.25mm×45° |
| Coating [As per customized request] | As per customized request |
Key Features
Datasheet
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Supplier Information
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