Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-07-17
2007-07-17
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C356S616000
Reexamination Certificate
active
11031280
ABSTRACT:
An optical encoder includes a code strip having a first side, a second side, a first track comprising indicia thereon, and a second track comprising indicia thereon. The code strip is moveable along a displacement path with respect to the optical encoder. A light source positioned on the first side of the code strip directs light toward the code strip. A first detector element is positioned on the second side of the code strip and is generally aligned with the first track of the code strip. A second detector element is positioned on the second side of the code strip and is generally aligned with the second track of the code strip. The second detector element is also positioned so that the second detector element is located a spaced distance along the displacement path from the first detector element.
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English translation of Abstract of EP 0365 740 A1.
English translation of Abstract of AT 396 840 B.
UK Office Action of Apr. 28, 2006.
Agilent Technologies, www.agilent.com/semiconductors, “Two Channel High Resolution Optical Incremental Encoder Modules”, May 8, 2002, 11 pages.
Agilent Technologies, www.agilent.com/semiconductors, “Agilent AEDS-962x for 300 LPI Ultra Small Optical Encoder Modules”, Nov. 26, 2002, 10 pages.
Thomas E. Kissell, “Linear and Rotary Encoders”, www.zone.ni.com, at least as early as Nov. 19, 2004, 5 pages.
Fo Kok Hing
Hataguchi Toshiya
Lee Sze Kuang
Lum Chee Foo
Ng Kean Foong
Avago Technologies ECBU (IP) Singapore Pte. Ltd.
Epps Georgia
Yam Stephen
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