1984-07-02
1986-04-08
Sikes, William L.
G02B 626, G02B 642
Patent
active
045808716
ABSTRACT:
A light-reflective type rotary encoder used to measure the rotational frequency of a rotating shaft, the distance travelled by a sliding body, or other physical quantity has a casing body in which a rotor is rotatably held. Two input optical fibers laid parallel to each other and an output optical fiber laid between the input fibers are held in the casing body in such a way that each one end of these fibers is arranged in line and opposed to the fringe of the rotor on which reflective areas and non-reflective areas are alternately formed at regular intervals circumferentially. The other ends of the fibers which are disposed on the open end side of the casing body are surrounded and covered by a device-mounting case which is detachably mounted to the casing body and which holds a light-emitting device and light-receiving devices therein.
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Matsunaga Hiroshi
Obata Kosei
Shimojima Yoji
Tokunaga Ichiro
Alps Electric Co. ,Ltd.
Shoup Guy W.
Sikes William L.
Wise Robert E.
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