Corner Cube Prism has three vertical surfaces and one bevel. The ray which come into the bevel is reflected by the three vertical planes, in the end parallel the incidence ray to exit, and regardless of the direction of the incidence ray. Three right angle corner cube prism usually be used in distance finding, optical signal dispose and laser interferometer.

Specifications
Material:  BK7 Grade A                                                                                       Diameter: smallest up to 6mm                                                                              Dimension Tolerance: +0.0, -0.2 mm
Clear Aperture:  >85%                                                                                                    Surface Quality:  40-20
Flatness: ..λ/4@632.8nm
Wavefront Distortion: .λ/4 @632.8 nm
Deviation: .90°± 5 arcsec