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Right Angle Prisms

Right Angle Prisms



Surface quality, S-D

10-5, 20-10

Surface flatness, P-V

<λ/10 @ 632.8 nm*

Right angle tolerance

±5 arcsec

Pyramidal tolerance

±1 arcmin

*depending on size and material

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There are three common uses for right-angle prisms in everyday laser applications – laser path deviations by 90° and 180°, and beam-splitting by 90° with knife-edge right-angle prisms. Our right-angle prisms are made from UVFS or BK7 materials, with both options available uncoated or coated depending on your application.

A right-angle prism can be a cost-effective solution when there is a need to reflect light at a 90° angle. Such prisms provide an easier alignment advantage than a regular dielectric mirror, though higher input-beam losses will be noticed.

Another effective use of a right-angle prism is as a 180° reflector that allows you to turn a beam backwards with only one optical element. In all cases, the prism legs or hypotenuse can be coated with dielectric coatings to improve the performance of the optical element.


Contact us with your request. We have a team of experienced coating engineers and metrology capabilities to prototype and transfer your idea into a well-defined production process.

Typical Items for Right Angle Prisms
Material Dimensions A x B x C, mm Angle tolerance Product ID
BK7 12.7 x 12.7 x 12.7 General type 1-PR-1-0127
BK7 20 x 20 x 20 General type 1-PR-1-0200
BK7 25.4 x 25.4 x 25.4 General type 1-PR-1-0254
UVFS 12.7 x 12.7 x 12.7 Precision type 1-PR-2-1127
UVFS 20 x 20 x 20 Precision type 1-PR-2-1200
UVFS 25.4 x 25.4 x 25.4 Precision type 1-PR-2-1254

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