| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical sensor capable of enhancing a degree of freedom in arrangement of a light receiving element. SOLUTION: An arithmetic unit calculates a light propagation angleθand a light intensity L from outputs of the light receiving elements 14, 16, based on each angle output function indicating an incident angle-output characteristic of light in each of the light receiving elements 14, 16, and each intensity output function indicating an incident intensity-output characteristic of the light. A virtual light receiving element 17 with an angle output function and an intensity output function equal to those of the light receiving element 14 (or the light receiving element 16) is formed virtually in an intermediate position between the light receiving element 14 and the light receiving element 16, and an output I<SB>P</SB>=f(L)×g(θ) of the virtual light receiving element 17 is calculated from the light propagation angleθand the light intensity L. Since the virtual light receiving element 17 is formed virtually in the arithmetic unit, the virtual light receiving element 17 is arranged even in the place where an arranging position for the virtual light receiving element 17 is a mounting position for another member, or even under an unfavorable environment, so as to enhance the degree of freedom in the arrangement of the light receiving element. COPYRIGHT: (C)2006,JPO&NCIPI
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