Reference · TO-RAP

Right-Angle Prism

Prisms

A 90° beam-steering prism with optional hypotenuse coating, supplied in N-BK7, UV fused silica or other optical glass.

Typical values

ParameterReference
MaterialN-BK7 / UV fused silica; N-SF11, CaF2, Ge, ZnSe by review
Dimension tolerance±0.2 mm standard; tighter by review
Surface quality40/20 standard; 20/10 by review
Clear aperture>90%
Flatness<λ/4 standard; λ/8–λ/10 by review
Angle tolerance±2 arcmin standard; ±5 arcsec by review
Pyramid error<3 arcmin by review
Chamfer<0.5 mm × 45°
CoatingUncoated, AR, protected aluminum or dielectric HR

Use this table to understand what is routine, what is reviewed against a drawing and where the project needs a different route.

ParameterStandardBy drawing reviewNotes
MaterialN-BK7 / UVFSN-SF11, CaF2, Ge, ZnSe—
Dimension tolerance±0.2 mmTighter tolerance—
Surface quality40/2020/10—
Flatness<λ/4λ/8–λ/10—
Angle tolerance±2 arcmin±5 arcsec—

Right-angle prisms turn a beam by 90° through total internal reflection or a coated hypotenuse. Specify whether the hypotenuse needs protected aluminum, a dielectric HR coating or an AR coating, and state the clear aperture and mounting orientation.

  • Beam steering
  • Periscopes and instruments
  • Laser breadboards
  • 90° deviation
  • N-BK7 / UVFS
  • AR / HR / metallic coating
  • Custom leg lengths

What to include in the RFQ

The following inputs let us quote the geometry, coating and inspection route without guessing.

Request a quote for this component
  1. 01Drawing with leg lengths, orientation and clear aperture
  2. 02Material and wavelength band
  3. 03Angle, pyramid and flatness requirements
  4. 04Hypotenuse coating: AR, HR or metallic
  5. 05Quantity and inspection documents

Put the drawing in front of an engineer.

Share the optical requirement, coating target and inspection expectation. We will return a scoped technical route.

Request a drawing review