Optical encoder photodetector array with multiple resolutions

Details Optical encoder photodetector array with multiple resolutions Optical encoder photodetector array with multiple resolutions

2007-11-27

2007-11-27

Monbleau, Davienne (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S231130, C250S231140, C356S616000, C356S617000

Reexamination Certificate

active

11499696

ABSTRACT:
A photodetector for an optical encoder has plural sets of segmented photodiodes, each set of which is made by two adjoining segmented photodiodes capable of coping with a scale slit having a reference resolution. Output lines of the two adjoining segmented photodiodes are connected together in each set of the photodiodes. These output lines are connected to output lines of the corresponding segmented photodiodes in the other sets. The two adjoining segmented photodiodes function like one segmented photodiode, and thereby, the resolution of the applied scale slit is made ½ of the reference resolution. Thus, this photodetector easily copes with a scale slit having a half resolution of the reference resolution at low cost only by modification of wiring without changing any configuration of the segmented photodiodes.

REFERENCES:
patent: 4691101 (1987-09-01), Leonard
patent: 5771068 (1998-06-01), Sali et al.
patent: 5981942 (1999-11-01), Ieki et al.
patent: 6175109 (2001-01-01), Setbacken et al.
patent: 6452159 (2002-09-01), Holzapfel et al.
patent: 6590201 (2003-07-01), Ueda et al.
patent: 6635863 (2003-10-01), Nihommori et al.
patent: 6665065 (2003-12-01), Phan et al.
patent: 6713456 (2004-03-01), Usman et al.
patent: 6713756 (2004-03-01), Yamamoto et al.
patent: 6727493 (2004-04-01), Franklin et al.
patent: 6794637 (2004-09-01), Holzapfel et al.
patent: 6838688 (2005-01-01), Aoki et al.
patent: 6867424 (2005-03-01), Kurosawa et al.
patent: 2002/0015194 (2002-02-01), Watanabe
patent: 2003/0047673 (2003-03-01), Thorburn et al.
patent: 2003/0094586 (2003-05-01), Kurosawa et al.
patent: 2003/0215129 (2003-11-01), Yang et al.
patent: 2005/0035311 (2005-02-01), Asakawa et al.
patent: 710819 (1996-05-01), None
patent: 59-40258 (1984-03-01), None
patent: 69-292016 (1986-12-01), None
patent: 8-3427 (1996-01-01), None
patent: 10051308 (1998-02-01), None
patent: 11040563 (1999-02-01), None
patent: 2001-183176 (2001-07-01), None

Affiliated with

Also associated with

Rating

Optical encoder photodetector array with multiple resolutions 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 photodetector array with multiple resolutions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical encoder photodetector array with multiple resolutions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3821003