The invention discloses a
laser radar for a vehicle anti-
collision avoidance system. A transmitting and receiving
scanner is a dual-rotation
laser transmitting and receiving
scanner; the dual-rotation
laser transmitting and receiving
scanner includes a base and a rotation body of a transmitting window and a receiving window, wherein the rotation body is mounted on the base; the upper part of the rotation body is provided with a laser generator, a lens group and a reflector; the emergent light path of the reflector is aligned with the transmitting window; the back surface of the reflector is provided with a motor with a
cam which
cam drive the reflector to swing, so that the light path can carry out sector-shaped scanning; the lower part of the rotation body is provided with a laser receiving device; a conical reflector is installed at the receiving window; and reflected laser is reflected to a laser receiving probe through the conical reflector. With the laser
radar of the invention adopted, the vehicle anti-
collision avoidance system can achieve vertical sector scanning and rotary scanning simultaneously, and the
radiation energy requirements of scanning
laser beams can be reduced. The laser
radar has the advantages of high safety, high accuracy and high sensitivity.