Penta prisms are five-sided prisms featuring a ray deviation of 90° and a right handed image. The reflecting surfaces are aluminized for increased efficiency. Slight movement of the prism does not affect the true right angle at which light rays are reflected, making a penta prism the ideal optical tool for defining a right angle in an optical system.
|Angle Tolerance||±30 Arcsec|
|Surface Flatness||1/10 Lambda|
|Surface Quality||60/40, 40/20 or better|
|Material||BK7/UV fused silica/optical glass|
|Ray Deviation||90 °|
|Bevel||Protective bevel as needed|