Patent ID: 7002669
Filing Date: 2006-02-21
Classification: G01S,G02B

Abstract:
1. An apparatus ( 1 ) with a detector element ( 9 ) for receiving a light beam ( 3 a , 3 b ) reflected by an object, whereby means ( 7 , 5 ) are provided for deflecting the reflected light beam ( 3 b ) onto said detector element ( 9 ), characterized in that a rotating polygonal mirror ( 5 ) is provided as a means for deflecting the reflected light beam ( 3 b ), said polygonal mirror having a plurality of mirror surfaces ( 5 a , 5 b , 5 c ) inclined at an angle (β) to the rotation axis ( 6 ) of the rotating polygonal mirror ( 5 ), whereby the detector element ( 9 ) is arranged in the direction of the rotation axis ( 6 ) of the polygonal mirror ( 5 ), and that an optic ( 7 ) is allocated to each mirror surface ( 5 a , 5 b , 5 c ) of the polygonal mirror ( 5 ) for focusing the reflected light beam ( 3 b ) onto the detector element ( 9 ), said optic rotating in synchronism with the polygonal mirror ( 5 ).