Corner Cube Retro-Reflectors have three mutually perpendicular surfaces and a hypotenuse face. It operates 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 can not be kept sufficiently clean for TIR, a metal or dielectric coating can be applied to the reflecting surfaces.
Corner Cube Retro-Reflectors has three mutually perpendicular surfaces and a hypotenuse face, light entering through the hypotenuse is reflected by each of the three surfaces in turn and will emerge though the hypotenuse face parallel to the entering beam regardless of the orientation the incident beam, it is often used to the distance measurement, optical signal process and laser interferometer.
Application
Geodetic measurement instrument
Precision measurement in laboratory
Astronautics and Aviation
ATTRIBUTE | SPECIFICATIONS |
MATERIAL | N-BK7, fused silica |
DIAMETER TOLERANCE | +0.0, -0.1mm |
ANGLE TOLERANCE | < 5 arc seconds |
CLEAR APERTURE | >90% |
FLATNESS | λ/4@ 632.8nm |
SURFACE QUALITY | 60/40 scratch and dig |
BEVEL | < 0.2 mm x 45° |
COATING | With AR coating on outside surfaces |