Corner Cubes, also known as Corner Cube Reflectors, Trihedral Retro-reflectors, Trihedral Prisms, or Corner Cube Retro-reflectors, are most commonly used for alignment because light is always reflected back towards the source.

AWI Industries Corner Cube All

Why is it called "Corner Cube"? Imagine a knife cutting diagonally across a square block of glass

AWI Industries Corner Cube Definition

and then the "three-sided pyramid" is further cut with a cylinder. The diameter of the cutting cylinder determines the size of the Corner Cube Lens:

AWI Industries Corner Cube Definition

Standard sizes are listed below. Custom-made sizes and special materials are also available upon request.

A.W.I. STANDARD CORNER CUBES
Angle Tolerance (arc sec.) Material Surface Quality (Scratch / Dig) Dia. (mm) Dia. Tol. (mm) Height (mm) Height Tol. (mm) Surface Flatness Chamfer (mm)
2,5,or 10 BK7 60/40 7.16 0 * ±0.25 1/4,1/8 wavelength 0.2
2,5,or 10 BK7 60/40 12.7 0 * ±0.25 1/4,1/8 wavelength 0.2
2,5,or 10 BK7 60/40 25.4 0 * ±0.25 1/4,1/8 wavelength 0.2
2,5,or 10 BK7 60/40 38.1 0 * ±0.25 1/4,1/8 wavelength 0.2
2,5,or 10 BK7 60/40 50.8 0 * ±0.25 1/4,1/8 wavelength 0.2
2,5,or 10 BK7 60/40 63.5 0 * ±0.25 1/4,1/8 wavelength 0.2
2,5,or 10 BK7 60/40 76.2 0 * ±0.25 1/4,1/8 wavelength 0.2

* = Height can be specified by customer.

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