| 摘要 |
PCT No. PCT/JP89/01092 Sec. 371 Date Jun. 21, 1990 Sec. 102(e) Date Jun. 21, 1990 PCT Filed Oct. 25, 1989 PCT Pub. No. WO90/04756 PCT Pub. Date May 3, 1990.The present invention aims at providing a light-reflecting rotary encoder which is capable of perfectly matching the timing of the clicking detent sensation and pulse signal generation while also guaranteeing a long useful life, and in order to achieve this objective, an optical element and a ring-shaped magnetic plate are provided which oppose a pulse plate made from a sheet of iron material and rotated by an operating shaft, the pulse plate having reflective portions and non-reflective slits. By this means, the pulse plate can be used for both producing the clicking detent sensation and generating the pulse signal, whereby timing shifts due to differences in the precision of manufacturing or shifts in assembling the components can be eliminated. Moreover, since the clicking detent sensation is generated by the ring-shaped magnet and pulse plate, a light-reflecting encoder with a guaranteed long useful life can be provided.
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