SEMICONDUCTOR INTEGRATED CIRCUIT FOR OPTICAL SENSOR

摘要

PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit for an optical sensor capable of performing a highly-accurate visibility correction.SOLUTION: A semiconductor integrated circuit 1 for an optical sensor receives environment light via a cover member 3 which attenuates visible light and transmits infrared light and a condenser lens 2, corrects visibility on the basis of an amount of the received light, and detects illuminance of the environment light. The semiconductor integrated circuit 1 comprises: a first light-receiving element having first spectral characteristics; a second light-receiving element; and visibility correcting means 30 for subtracting output of the first light-receiving element and output of the second light-receiving element. The planar shapes of the first and second light-receiving elements are approximately hollow polygonal shapes. The first light-receiving element and the second light-receiving element are isolated with each other and concentrically arranged.