Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-07-18
2006-07-18
Allen, Stephone B. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S231140, C250S2140PR, C033S0010PT, C033S0010DD, C356S616000
Reexamination Certificate
active
07078677
ABSTRACT:
A code disk, an optical encoder using such a disk and a method thereof are described. The code disk includes a first region on the disk and a second region that is adjacent to the first region. The first region increases continuously in size in a radial direction from a minimum at a first angular position to a maximum that occurs 360 degrees from the first angular position. One of the first and second regions allows light to be transmitted therethrough to a detector, and the other of the first and second regions prevents light from being transmitted therethrough. The detector generates an output that corresponds to the amount of light transmitted through the code disk.
REFERENCES:
patent: 5428217 (1995-06-01), Nakajima et al.
patent: 5650613 (1997-07-01), Lewis
patent: 5734160 (1998-03-01), Chung et al.
patent: 6170162 (2001-01-01), Jacobsen et al.
patent: 6222183 (2001-04-01), Taniguchi et al.
patent: 6552330 (2003-04-01), Blasing
patent: 6822220 (2004-11-01), Lesniak
patent: 6888126 (2005-05-01), Blasing et al.
patent: 2002/0179826 (2002-12-01), Laberge et al.
Chong Chee Keong
Lee Chin Yun
Allen Stephone B.
Monbleau Davienne
LandOfFree
Optical encoder disk having a region that continuously... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical encoder disk having a region that continuously..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical encoder disk having a region that continuously... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3580645