Light-reflector type encoding method and the encoder

Details Light-reflector type encoding method and the encoder Light-reflector type encoding method and the encoder

1984-12-04

1987-03-31

LaRoche, Eugene R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250227, 250237G, G01D 534

Patent

active

046545239

ABSTRACT:
A light-reflector type encoding method which comprises emitting light from one end of an optical fiber to a mobile body which moves relatively to said end of the optical fiber, through an optical lattice disposed at a fixed position relatively to said fiber end, receiving the reflected light from at least plural light-reflective graduations provided in the light-emitted zone of said mobile body through the optical lattice, and detecting the received reflected light with a photoelectric conversion element connected to the other end of the optical fiber. The present invention also provides a light-reflective type encoder suitable for carrying out the encoding method.

REFERENCES:
patent: 4162399 (1979-07-01), Hudson
patent: 4176276 (1979-11-01), Kaul et al.
patent: 4503326 (1985-03-01), Searle

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