Optical signal transmission apparatus

Details Optical signal transmission apparatus Optical signal transmission apparatus

1979-12-21

1982-03-23

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

455602, G02B 2700

Patent

active

043214746

ABSTRACT:
An apparatus for optically transmitting signals from a rotatable body to a stationary side or vice versa in a non-contact manner, includes a plurality of light emitting elements excited by a PCM signal from a signal source and a plurality of light receiving elements disposed in opposition with the light emitting elements for receiving light therefrom. A plurality of sets each including plural light receiving or emitting elements are provided at the stationary side in association with the respective light emitting or receiving elements disposed at the rotatable body side. Alternatively, a plurality of sets each including plural light emitting elements are provided at the rotatable body side in association with the respective light receiving elements disposed at the stationary side. The elements in such plural sets are selected in accordance with the rotation of the rotatable body.

REFERENCES:
patent: 3764813 (1973-10-01), Clement et al.
patent: 4190318 (1980-02-01), Upton
patent: 4247767 (1981-01-01), O'Brien et al.

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