Rotary encoder

Details Rotary encoder Rotary encoder

1983-06-17

1985-12-17

Miska, Vit W.

Communications: electrical

Audible indication

Percussion-type sound producer

250231SE, G08C 906, G01D 534

Patent

active

045595240

ABSTRACT:
A rotary encoder for measuring a rotary angle and the number of rotation, which consists principally of a rotary shaft, a rotary slit disk fitted to the rotary shaft and a light emitting element and detectors opposing each other while interposing the rotary slit disk between them and fixed to a part of a housing in the non-contact arrangement with respect to the rotary slit disk. The present invention is characterized in that the rotary encoder is equipped with at least two pairs of detectors, each consisting of two detectors, and each detector pair is arranged in such a fashion that the resultant value of the detecting signals of the detectors forming each pair can be regarded as being detected at one point of resultant center which is substantially predetermined on the rotary slit disk.

REFERENCES:
patent: 3242478 (1966-03-01), Kaestner
patent: 4064504 (1977-12-01), Lepetit et al.
patent: 4335306 (1982-06-01), Gort et al.
patent: 4475034 (1984-10-01), Maddox et al.

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