Reflective optical encoder

Details Reflective optical encoder Reflective optical encoder

2005-09-14

2008-12-30

Lee, Michael G (Department: 2876)

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Particular code pattern

C235S454000

Reexamination Certificate

active

07469839

ABSTRACT:
In one embodiment, an optical encoder includes a code member, a light source, and a detector array. The code member has a plurality of reflectors thereon; and the light source is positioned to illuminate an area of the code member that includes at least one of the reflectors. The detector array includes at least one detector set, each of which includes a plurality of detector elements. The code member and the detector array are moveable with respect to one another along a displacement direction, and as the code member moves with respect to the detector array, the reflectors on the code member reflect light emitted by the light source to produce circular or elliptical light spots that travel across the detector array.

REFERENCES:
patent: 4096383 (1978-06-01), Mancini et al.
patent: 4266125 (1981-05-01), Epstein et al.
patent: 4691101 (1987-09-01), Leonard
patent: 5006703 (1991-04-01), Shikunami et al.
patent: 5179485 (1993-01-01), Tamayama
patent: 5646730 (1997-07-01), Mitchell et al.
patent: 6043483 (2000-03-01), Schreiber
patent: 6232593 (2001-05-01), Taniguchi et al.
patent: 6639206 (2003-10-01), Rothamel et al.
patent: 6768101 (2004-07-01), Lee et al.
patent: 6774355 (2004-08-01), Kudo
patent: 6816091 (2004-11-01), Chee
patent: 7132647 (2006-11-01), Atsuta et al.
patent: 2002/0074487 (2002-06-01), Ito et al.
patent: 2003/0085345 (2003-05-01), Franklin et al.
patent: 2004/0155178 (2004-08-01), Takeshi
patent: 2005/0099911 (2005-05-01), Hiratsuka
patent: 2005/0258986 (2005-11-01), Hare et al.
patent: 2007/0018084 (2007-01-01), Shimomura et al.
patent: 63-151807 (1988-06-01), None
patent: 2-176419 (1990-07-01), None
patent: 4-355325 (1992-12-01), None
patent: 8-247792 (1996-09-01), None
patent: 10-78332 (1998-03-01), None
patent: 2000-241441 (2000-09-01), None
“HD2.0 Heavy Duty Optical Encoder”, Encoder Technology, www.encodertech.com, Dec. 2004, 2 pages.
“Shadow Technology”, Quantum Devices, Inc., Quantum Facts Series: QF3-01, www.quantumdev.com, 1998, 2 pages.
“HD2.0/HD2.5 Industrial Encoder Design Points”, Encoder Technology, www.encodertech.com, at least as early as Aug. 16, 2005, 2 pages.
Boon Keat Tan, et al., “Transmissive Optical Encoder”, Patent Application (22 pages including 15 pages of specification, 6 pages of claims and 1 page abstract), and four sheets of Formal Drawings (Figs. 1-8), Filing Date: Sep. 14, 2005.
Krishnan, Ram S., et al., “A Miniature Surface Mount Reflective Optical Shaft Encoder”,Hewlett-Packard Journal, (Dec. 1996).
UK Search Report dated Jan. 16, 2007 involving UK counterpart application No. GB0617913.9.

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