Patent ID: 7411661

Claim:
A laser radar for a vehicle using a cylindrical reflector, comprising: a cylindrical reflector having a cylindrical body and a plurality of reflection mirrors wherein the plurality of reflection mirrors are attached to an internal surface of the caliber of the cylindrical body along a circumferential direction thereof so that a transmitting reflection angle of a laser beam can vary in accordance with rotation of the cylindrical body; a rotation driving means for rotating the cylindrical reflector; a laser light receiving part positioned in a center hole of the cylindrical reflector; left/right laser light emitting parts positioned to be symmetrical to each other at a rear side of the cylindrical reflector; a position detector for detecting a rotation angle of the cylindrical reflector; a controller for receiving signals of the laser light receiving part and the position detector; and a modulation circuit for adjusting the modulation frequency of a laser beam in accordance with a detection signal of the position detector.