Rotation angle detector

Details Rotation angle detector Rotation angle detector

1978-03-20

1981-02-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250211K, 310111, G01D 534, H02K 3900

Patent

active

042503809

ABSTRACT:
In the construction of a photoelectric type rotation angle detector for a rotatable or turnable object including a photoelectric transducer, an optical interceptor and a comparator circuit, a cylindrical light interceptive portion extends parallel to the main shaft axis of the interceptor, the optical trace of the transducer extends across the light interceptive portion, and angular deviation of the object from a standard angular position induces corresponding relative rotation between the transducer and the interceptor for generation of a corresponding output from the comparator circuit.

REFERENCES:
patent: 2985872 (1961-05-01), Beltrami
patent: 3217308 (1965-11-01), Maxwell, Jr.
patent: 3358150 (1967-12-01), Summer
patent: 4103155 (1978-07-01), Clark

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