Optical sensor

Details Optical sensor Optical sensor

2007-02-13

2007-02-13

Lee, John R. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140RC

Reexamination Certificate

active

10549761

ABSTRACT:
A signal processing circuit20has switches21, a shift register22, and an integrating circuit23, and outputs voltages Voutindicating luminance profiles in a second direction and in a first direction of light incident to a photosensitive region10. The switches21are provided corresponding to groups of photosensitive portions on one side electrically connected among a plurality of pixels arrayed in the first direction and corresponding to groups of photosensitive portions on another side electrically connected among a plurality of pixels arrayed in the second direction. The shift register22is an element for sequentially reading electric currents from the groups of photosensitive portions on one side in the second direction and for sequentially reading electric currents from the groups of photosensitive portions on another side in the first direction. The integrating circuit23sequentially imports the electric currents from the groups of photosensitive portions on one side and the groups of photosensitive portions on another side sequentially read by the shift register22, and converts the electric currents into voltages.

REFERENCES:
patent: 2004/0263652 (2004-12-01), Oda
patent: 01-167769 (1989-07-01), None
patent: 5-29594 (1993-02-01), None
patent: 6-5832 (1994-01-01), None
patent: WO 03/055201 (2003-07-01), None

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