Optical rotary encoder

Details Optical rotary encoder Optical rotary encoder

1986-07-29

1988-02-23

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

250231SE, 340347M, 34087029, 455170, H03M 124

Patent

active

047273569

ABSTRACT:
An optical rotary encoder is formed by a control pulse generator portion and a selector switch portion which are of the unitary construction. The control pulse generator portion is formed by a code plate having a plurality of alternately formed reflecting and non-reflecting areas, a plurality of light emitting and receiving elements facing the code plate and an inner shaft for rotating the code plate. The selector switch portion is formed by a second code plate having a plurality of light transmitting apertures, a plurality of light emitting elements facing the second code plate, a plurality of light receiving elements provided on the opposite side of the second code plate from those light emitting elements and an outer shaft for rotating the second code plate. The inner and outer shafts are connected to each other and have a common axis of rotation.

REFERENCES:
patent: 3271758 (1966-09-01), Stultz et al.
patent: 3286251 (1966-11-01), Byun et al.
patent: 3738504 (1973-06-01), Vail et al.
patent: 4015253 (1977-03-01), Goldstein
Grob, Basic Television, McGraw-Hill Book Company, Inc., 1954, pp. 442 & 443.

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