Patent ID: 7826039

Claim:
A target acquisition device comprising an objective, an electrically controllable transmitter for emitting a transmitted beam, a receiver for receiving a measured beam comprising components of the transmitted beam which have been reflected by a target through the objective, comprising an entry surface arranged after said objective, and a light-sensitive element which is connected thereto and generates an electrical measured signal on incidence of light, and comprising a control device for controlling the transmitter and processing the measured signal, said target acquisition device including attenuation means for deliberate suppression or attenuation of beams originating from multiple reflections or of beams that give rise to multiple reflections, wherein said attenuation means comprises a deflection surface which at least partly surrounds the entry surface of the receiver and reflects incident components of the measured beam, where they are not absorbed, predominantly in the directions which deviate from the direction of incidence, the deflection surface having the shape of a funnel.