Integrated optical encoder

Details Integrated optical encoder Integrated optical encoder

2006-03-13

2008-03-18

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S231180, C250S23700G, C250S23700G, C033S0010PT, C033S0010DD, C341S011000

Reexamination Certificate

active

07345273

ABSTRACT:
A rotary switch including a control element, a light-emitting device arranged on a printed circuit board and configured to emit light, and at least two receivers arranged on the printed circuit board in correspondence with the light-emitting device and configured to detect switching positions of the rotary switch. Further, the light-emitting device is mounted radially at an outside portion of inside of a hollow cylindrical extension of the control element, and wherein on level with the light-emitting device, the extension includes orifices evenly distributed around a periphery of the extension, and that opposite the light-emitting device, on an exterior side of the extension, the at least two receivers are arranged.

REFERENCES:
patent: 4940926 (1990-07-01), Periou
patent: 7109469 (2006-09-01), Hayashi
patent: 2003/0182810 (2003-10-01), Sano
patent: 2005/0133696 (2005-06-01), Orrico et al.
patent: 36 32 084 (1988-04-01), None
patent: 103 14 315 (2004-10-01), None

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