Corner Cube Retro-Reflectors
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Corner Cube Retro-Reflectors operate on the principle of total internal reflection (TIR). A beam entering the effective aperture is reflected by the three roof surfaces and emerges from the entrance / exit surface parallel to itself. This property is independent of orientation of the retro-reflector, within acceptance angle limitations. For applications in which either the acceptance angle for TIR is exceeded, or the reflecting surfaces cannot be kept sufficiently clean for TIR, a metal or dielectric coating can be applied to the reflecting surfaces.
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RMI Standard Specifications
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| Materials: |
BK7, FS, UVFS, CaF2 |
Surface Figure:
BK7, UVFS, FS:
CaF2:
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All polished surfaces:
λ/20 at 633 nm
λ/4 at 633 nm
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Surface Quality:
BK7, UVFS, FS:
CaF2:
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All polished surfaces:
10-5
20-10
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| Dimensional Tolerance: |
+ 0.000", – 0.010" |
Angular Deviation:
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180º |
| Bevels: |
minimum safety bevel on all edges; apex unbeveled |
| Clear Aperture: |
Exceeds central 85% of diameter |
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