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Penta Prism is a five-sided prism, featuring two important properties. First the image is neither inverted nor reversed while it is deviated by 90°. Secondly, it is a constant deflection device, i.e. all the transmitted rays are deviated by the same exact 90°. Slight movement of the prism does not affect the true right angle.


Size range a=b=c, 2 - 50mm
Size tolerance 0.1mm
Angle tolerance 3
Surface quality 60 / 40
Flatness λ/2 per inch at 633nm
Bevel 0.1 - 0.3mm x 45
Material BK7
The specifications will be different according to materials and dimensions.
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