Position detector

Details Position detector Position detector

1984-12-14

1987-08-18

LaRoche, Eugene R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

340347P, G01D 534

Patent

active

046879285

ABSTRACT:
A position detector for use with a code carrier which defines a position and has alternating radiation transmissive and non-transmissive regions which define a multi-bit output is disclosed. The position detector includes a photodetector array mounted on one side of the code carrier and a radiation source mounted on the detector on the side opposite the photodetector array. A radiation guide is interposed between the code carrier and the photodetector array and has a plurality of radiation transmissive paths each of which is in exclusive communication with one photodetector.

REFERENCES:
patent: 3824587 (1974-07-01), Fowler
patent: 4291976 (1981-09-01), McMahon

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