Patent ID: 6525309
Filing Date: 2003-02-25
Classification: G01D

Abstract:
Optoelectronic sensor for scanning an object within an angular transmission range and having means for activating a synchronization circuit to produce a synchronization pulse signaling the start of a sensing period comprising a light source for the transmission of a scanning beam, a photo-detector for detecting light and for coupling to the synchronization circuit, a light deflection unit, which is formed for the periodic deflection of the scanning beam within an angular transmission range, a receiving device for detecting light reflected and/or back-scattered from the object, and a deflector which has a light entry surface arranged at least regionally within the angular transmission range and is formed for the deflection of light incident trough the light entry surface onto the photo-detector so that an output of the photo-detector activates the synchronization circuit to produce the synchronization pulse that signals the start of the sensing period, the deflector including a plate of light permeable material formed as an irregular polygon having narrow sides defining light entry, light exit and reflection surfaces.