Pentaprism
A penta prism has five sides, four of which are polished: two reflecting faces and an entrance and exit face. The reflecting faces have dielectric reflective coatings. It deflects light through 90° without image rotation or mirror reversal, and the 90° deflection remains unchanged with prism position, simplifying assembly. Widely used in levels, rangefinders and passport scanners.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | K9 |
| Dimensional Tolerance | ±0.05mm |
| 90° Combined Angle | <30seconds |
| Surface Quality | 60/40 |
| Clear Aperture Dimension | >90% |
| Surface Figure | <λ/4（25mm)@633nm |
| Chamfer | Protective <0.5mmх45° |
| Coating | AR BS HR Metal Coating |
Datasheet
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