Patent ID: 6982407
Filing Date: 2006-01-03
Classification: G06F

Abstract:
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.