Photoelectric encoder

Details Photoelectric encoder Photoelectric encoder

1984-06-05

1986-10-28

LaRoche, Eugene R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250205, G01D 534

Patent

active

046200940

ABSTRACT:
Disclosed is a photoelectric encoder for providing an electrical pulse signal corresponding to the rotational position and direction of a disk rotor. The encoder possesses a feedback means including a second light sensitive means and associated circuit for obtaining the stabilized output signal thereof in spite of the fluctuation of the power source voltage and/or ambient temperature or adhesion of extraneous substances to light emitting and/or sensing elements and others.

REFERENCES:
patent: 4118129 (1978-10-01), Grundherr
patent: 4417179 (1983-11-01), Fujimura et al.

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