Laser range finder, e.g. for driverless transport system

摘要

The laser appts. includes a pulse laser (11) which transmits controlled light pulses (12) to a measuring region (13). A photoreceiver (22) intercepts light reflected from an object (14) in the measuring region, and a processor circuit (23,30,34,36-40) delivers a distance signal according to the speed of light and the time between transmission and reception of the light pulses (12,12'). A light deflector (15), disposed between the pulsed laser and the measuring region, deflects successive light pulses into different angles in the measuring region. The deflector also sends corresp. angular position signals to the processor circuit. The processor uses the angle and distance signals to determine the object position within a 90 to 270 degree radius.