Patent ID: 8730458
Filing Date: 2014-05-20
Classification: G01S,G01V,G02B

Abstract:
1. An optoelectronic sensor ( 10 ) which comprises a light transmitter ( 12 ) for transmitting a light beam ( 16 ) having a beam profile ( 28 ) elongated in a line direction into a monitored zone ( 26 ), a light receiver ( 34 ) for generating a received signal from the light beam ( 30 ) remitted by objects in the monitored plane ( 26 ), a movable deflection unit ( 24 ) for the periodic deflection of the light beam ( 16 , 30 ) to scan the monitored plane ( 26 ) in the course of the movement and an evaluation unit ( 42 ) for detecting the objects with reference to the received signal, wherein the sensor further comprises an optical beam rotation element ( 20 ) which is arranged after the light transmitter ( 12 ) and is configured to rotate an incident light beam ( 16 ) with arbitrary orientation of the line direction such that the transmitted light beam ( 16 ) always exits with one and the same uniform orientation of the line direction in order to compensate the change in orientation of the light spot in the monitoring zone ( 26 ) induced by the movable deflection unit ( 24 ).