Optical sensor for determining position of object in surveillance field has square matrix-type optical sensor and has transmitters shining beams of light onto object

摘要

A first optical transmitter (4) is used to measure the distance from the sensor assembly (1) to the object (2). The optical transmitter produces a light beam (8) which passes through an output window (9) to the object. There is a second optical transmitter (5) with a scattering lens (10). Light reflected from the object (14) passes through a positive lens (13) and a beam divider onto a square optical receiver (6) with a CMOS array (6a). The optical sensor is connected to an evaluation circuit (7).