Transmissive optical encoder

Details Transmissive optical encoder Transmissive optical encoder

2005-09-14

2009-06-30

Kim, Ahshik (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C250S231130, C250S231160

Reexamination Certificate

active

07552873

ABSTRACT:
In one embodiment, an optical encoder includes a light source, a detector array and a code member. The detector array is positioned in spaced-apart relation to the light source and includes at least one detector set. Each of the at least one detector sets includes a plurality of detector elements. The code member 1) is positioned between the light source and the detector array, 2) is moveable with respect to the detector array along a displacement direction, and 3) defines a plurality of circular or elliptical openings through which light emitted by the light source is filtered to produce light spots that travel across the detector array as the code member moves with respect to the detector array. Other embodiments are also disclosed.

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), Ito
patent: 2004/0173737 (2004-09-01), Shimomura
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: 7280591 (1995-10-01), 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., “Reflective Optical Encoder”, Patent Application (23 pages including 16 pages of specification, 6 pages of claims and 1 page abstract), and seven sheets of Formal Drawings (Figs. 1-9), Filing Date: Sep. 14, 2005.
UK Search Report dated Jan. 16, 2007 involving UK counterpart application No. GB0617942.8.
Krishnan, Ram S., et al., “A Miniature Surface Mount Reflective Optical Shaft Encoder”,Hewlett-Packard Journal, (Dec. 1996).

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