Optical sensor for recording objects uses receptor line arrays to measure distance from two light sources with selection of highest signal for processing

摘要

An optical sensor (1) recording objects (2) in a monitored area has two CMOS (Complementary Metal Oxide Silicon) or CCD (Charge Coupled Device) receptor line arrays (6, 6) measuring the distance from the light sources (5, 5) on an integrated chip by two modulated elliptical (4, 4) with a processor (8) to detect objects above a set threshold and give analogue distance, speed, counter or digital switch signal outputs (12).