It 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 Specifications Material: N-BK7 / H-K9L, fused silica, Silicon, Germanium Diameter: Dia 8 – 180 mm Dimension tolerance: +/- 0.10mm Surface roughness: 0.01 Surface quality: Up to 20-10 scratch and dig Surface accuracy: Up to lambda/20 Angle tolerance: Up to 1 arc second Coating: With or without AR coating Corner cube prisms are available with different material, size, technical specifications and special shape. We supply fused silica corner cube prisms used in astronautics and aviation.