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Angle encoder has laser source split into three beams and focussed on reflecting coding disc with quarter wave deep impressed pattern on marking rings
Angle encoder has laser source split into three beams and focussed on reflecting coding disc with quarter wave deep impressed pattern on marking rings
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机译:角度编码器将激光源分为三束,聚焦在反射编码盘上,刻痕环上刻有四分之一波深的图案
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摘要
An angle encoder has a (2) laser source (1) split into three beams by a diffraction grating (2) and focussed (6) on a reflecting coding disc (7) with concentric marking ring tracks with regular quarter wave raised and sunk parts and three photo detectors (A, E, F) for the reflected part beams with processor to calculate the rotation angle. Independent claims are included for procedures using the encoder to measure angular rotation.
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