Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2011-07-19
2011-07-19
Lee, John R (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S208200, C356S141300
Reexamination Certificate
active
07982171
ABSTRACT:
A detection sensor to detect a receiving position of laser light according to the present invention includes a pair of light receiving element arrays (11X and11Y), wherein adjacent light receiving elements (PDXi) are positioned as spaced equidistantly from one another and are mutually connected via a resistor (RXj), and wherein the output lines (11aand11b) are respectively connected to the light receiving elements that are present at both ends of the respective light receiving element arrays (11X and11Y). The light receiving element arrays (11X and11Y) configure a composite array wherein the light receiving elements of a first light receiving element array are respectively positioned between the mutually adjacent light receiving elements of a second light receiving element array. When the laser beam makes contact with any of the light receiving elements, an analysis arithmetic device derives the position whereupon the laser beam is received, by performing a computation in accordance with the output that is obtained from each respective output line.
REFERENCES:
patent: 3649122 (1972-03-01), Holtz
patent: 4825291 (1989-04-01), Mimura et al.
patent: 4857721 (1989-08-01), Dunavan et al.
patent: 4907874 (1990-03-01), Ake
patent: 4976538 (1990-12-01), Ake
patent: 5138146 (1992-08-01), Idesawa
patent: 5604695 (1997-02-01), Cantin et al.
patent: 5796689 (1998-08-01), Houmoto et al.
patent: 5886776 (1999-03-01), Yost et al.
patent: 5969338 (1999-10-01), Yoshitomi et al.
patent: 6034367 (2000-03-01), Waczynski et al.
patent: 6873413 (2005-03-01), Douglas
patent: 7019278 (2006-03-01), Douglas
patent: 7030361 (2006-04-01), Douglas
patent: 7119316 (2006-10-01), Green et al.
patent: 7227121 (2007-06-01), Douglas
patent: 7372011 (2008-05-01), Green et al.
patent: 2003/0202172 (2003-10-01), Douglas
patent: 2005/0103974 (2005-05-01), Hsiao
patent: 2005/0279918 (2005-12-01), Douglas
patent: 2006/0049339 (2006-03-01), Green et al.
patent: 2007/0084988 (2007-04-01), Katayama
patent: 2008/0231838 (2008-09-01), Katayama
patent: 1 956 340 (2008-08-01), None
patent: 2004-309440 (2004-11-01), None
patent: WO 2007/063893 (2007-06-01), None
Dickstein & Shapiro LLP
Kabushiki Kaisha Topcon
Lee John R
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