Rotary encoder wherein phase difference is adjusted by the radia

Details Rotary encoder wherein phase difference is adjusted by the radia Rotary encoder wherein phase difference is adjusted by the radia

1985-03-06

1987-04-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, G01D 534

Patent

active

046599240

ABSTRACT:
A rotary encoder comprises a code disk provided with a number of strip-like reflection portions circumferentially equidistantly formed and radially extended on one surface of the code; and a sensor head constituted by a light emitting portion and a pair of light receiving portions provided at the opposite sides of the light emitting portion respectively, the sensor head being disposed such that the light emitting and receiving end surface thereof is in opposition to the one surface of the code disk, the sensor head being supported movably in the radial direction relative to the code disk.

REFERENCES:
patent: 3894232 (1975-07-01), Laspesa
patent: 3902063 (1975-08-01), Oelsch et al.
patent: 4031441 (1977-06-01), Garrett

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