| 摘要 |
PROBLEM TO BE SOLVED: To provide a color sensor with infrared correction minimizing a reduction in sensitivity. SOLUTION: A light sensor generating a first output signal indicative of an intensity of light received from a predetermined direction in a first band of wavelength includes a substrate having first and second photodetectors, a first filter layer, and a controller. The photodetecors are sensitive to light in the infrared portion of an optical spectrum as well as to light in the first band of wavelength, and generate first and second photodetector signals. The first filter layer transmits light in the first band of wavelength and light in the infrared portion of the optical spectrum while blocking light in a portion of the visible spectrum outside of the first band of wavelength, without altering light received by the first photodetector. The controller processes the first and second photodetector signals to produce a first output signal that is corrected for infrared in the input light. COPYRIGHT: (C)2009,JPO&INPIT
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