A corner cube retroreflector, also known as a CCR or trihedral prism, is an optical structure that consists of three adjacent, mutually-orthogonal plane-reflecting surfaces which form the corner of a cube. The corner cube reflects an incident ray at a specific angle, independent of the prism and beam orientations.
Corner cubes are used in a wide variety of applications such as spectroscopy, battlefield technology and satellites. Corner cubes enable range finding for weapons systems and aid in performing other precise displacement and distance measurements. For example, a satellite in orbit around the earth requires monitoring of its position while it measures plate tectonics and ocean surface topography.
|General spec.||High precision spec.|
|Material||Optical glass (H-K9L, BK7, or others), Fused silica|
|90°Deviation tolerance||<3 arc min||< 3arc sec.|
|Surface flatness @ 633nm||λ/2||λ/4|
|Coating||Upon the customer’s request|