Optical encoder with discontinuous optical grating

Details Optical encoder with discontinuous optical grating Optical encoder with discontinuous optical grating

2005-06-14

2008-03-25

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S231180, C250S23700G, C356S619000

Reexamination Certificate

active

07348544

ABSTRACT:
An optical encoder includes a light-emitting unit, a scale with a discontinuous part, and a plurality of light-receiving elements arranged in relationship to a pitch of the scale. In the optical encoder, a light beam from the light-emitting unit reflects off the scale, and is received at the light-receiving elements. As a result of the processing of signals from the light-receiving elements, the discontinuous part is detected and the origin detection can be achieved.

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Agilent Technologies, Inc. “Agilent HEDS-9202 Two Channel Optical Incremental Encoder Modules 2000 LPI Analog Output Data Sheet”. Jul. 26, 2002 [retrieved Jul. 2, 2007]. Retrieved from the Internet: <http://www.avagotech.com/assets/downloadedDocument.do?id=3487 >.

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