A pentaprism is a five-sided reflecting prism used to deviate a beam of light by a constant 90°, even if the entry beam is not at 90° to the prism.
The beam reflects inside the prism twice,[1] allowing the transmission of an image through a right angle without inverting it (that is, without changing the image's handedness) as an ordinary right-angle prism or mirror would.
Common Specifications
| Material | H-K9L | Smoothness | 60-40 | ||||||||
| Appearance tolerance | ±0.1mm | Clear Aperture | >90% of central diameter | ||||||||
| Angular tolerance | ±3’ | Chamfer | 0.3*45° | ||||||||
| Facial shape | λ4@632.8mn | Coating | According to customer requirements | ||||||||
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