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Effective aperture: >90% Packing Include: 1 * Isosceles Right Angle Prism Material: H-K9 optical glass material Coating: Bevel: Partially reflective film Uses: it is widely used in instrumentation, image tester, projector, vision system, mold word detection, automation equipment, etc. Size: about 10*10*10mm/0.39*0.39*0.39in Beam distortion: +/- 2arc min Face type: /4 Degree of finish: 40-20 Incident surface, exit surface: antireflection film Dimensional tolerance: ±0.1MM Angle: 45 degrees, 90 degrees, ± 3 One of the basic functions of right-angle prisms is that it can efficiently total reflect internal incident light through critical angle characteristic. When used right-angle prism, some optical films are usually plated. Featuring a large contact area and a typical angle of 45° and 90°, it is easier to install than a normal mirror, and enjoys better stability and strength for mechanical stress. It is the best optics element for all types of devices and instruments