초록 ▼

An optical radar system for vehicles has a stationary receiver and a transmitter which scans the road surface ahead of the vehicle, the scan area being shifted in accordance with the direction of steering of the vehicle. The scan area is covered by periodically sweeping a narrow-beam pulse laser thr

An optical radar system for vehicles has a stationary receiver and a transmitter which scans the road surface ahead of the vehicle, the scan area being shifted in accordance with the direction of steering of the vehicle. The scan area is covered by periodically sweeping a narrow-beam pulse laser through the designated scan area and monitoring the return lag of pulses reflected by objects in the scan area. The scan area is centered over the longitudinal axis of the vehicle while the latter is moving straight ahead. The axis of the scan area is shifted in proportion to the orientation of the steering wheel of the vehicle.

대표청구항 ▼

An optical radar system for a vehicle, comprising: (a) first means for transmitting a search beam toward possible objects in a road along which the equipped vehicle is travelling; (b) second means for automatically repeatedly scanning the search beam in a scan having a variable central angle with re

An optical radar system for a vehicle, comprising: (a) first means for transmitting a search beam toward possible objects in a road along which the equipped vehicle is travelling; (b) second means for automatically repeatedly scanning the search beam in a scan having a variable central angle with respect to a central axis of said first means, said variable central angle depending on the direction of the vehicle\s movement so as to scan parallel to and across the road surface; (c) third means for receiving a reflection of the search beam reflected by an object present on the road; and (d) fourth means for determining the distance from the vehicle to the object on the basis of the timing relationship between the transmitted search beam and the received reflection.