Pentaprism PTP0402
A pentaprism is a five-sided prism that produces a 90° beam deviation and a right-handed image. Its reflecting surfaces are aluminum-coated to improve efficiency. Small movements of the prism have little effect on the reflected beam, making it an excellent optical tool for defining a right angle in an optical system. COTO optics, Inc. pentaprisms are precision-made from N-BK7 and are suitable for various visible-light applications.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | N-BK7 Grade A, optical glass equivalently |
| Size [General-table dimensions: unit not specified] | 20×20 |
| Dimension Tolerance | ±0.2 mm |
| Clear Aperture | >90 % |
| Degree Deviation Tolerance | ±10 arcsec |
| Flatness [632.8 nm] | λ/4 |
| Flatness [632.8 nm；available] | λ/10 |
| Surface Quality | 60-40 Scratch and dig |
| Surface Quality [available] | 40-20 Scratch and dig |
| Reflectivity [per surface；630–680 nm] | >95 % |
| Coating | Aluminum coated on reflecting surfaces with black paint; AR coated or un-coated on entrance and exit surface |
Datasheet
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Supplier Information
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