US 6,982,407 B2 | ||
Photoelectric conversion unit having a plurality of photoelectric conversion surfaces and systems and methods for measuring location and/or direction using the photoelectric conversion unit | ||
Hiroyuki Hotta, Nakai-machi (Japan) | ||
Assigned to Fuji Xerox Co., Ltd., Tokyo (Japan) | ||
Filed on Sep. 16, 2002, as Appl. No. 10/243,841. | ||
Claims priority of application No. 2001-280945 (JP), filed on Sep. 17, 2001. | ||
Prior Publication US 2003/0052255 A1, Mar. 20, 2003 | ||
Int. Cl. G06M 7/00 (2006.01) |
U.S. Cl. 250—221 | 37 Claims |
1. A photoelectric conversion unit usable in an apparatus for determining a location of a diffused light source, comprising:
a first photoelectric conversion surface;
a second photoelectric conversion surface which faces the first photoelectric conversion surface at an angle of less than
180° so as to form a valley fold;
a third photoelectric conversion surface which has an angle of greater than 180° to the second photoelectric conversion surface
so as to form a mountain fold,
a fourth photoelectric conversion surface;
a fifth photoelectric conversion surface which faces the fourth photoelectric conversion surface at an angle of less than
180° so as to form a valley fold; and
a sixth photoelectric conversion surface which has an angle of greater than 180° to the fifth photoelectric conversion surface
so as to form a mountain fold,
wherein the first, second and third photoelectric conversion surfaces are arranged to face the diffused light source simultaneously,
and
wherein the fourth, fifth, and sixth photoelectric conversion surfaces are arranged to face the diffused light source simultaneously.
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