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.
Why is it called "Corner Cube"? Imagine a knife cutting diagonally across a square block of glass
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:
Standard sizes are listed below. Custom-made sizes and special materials are also available upon request.
A.W.I. STANDARD CORNER CUBES |
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| 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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