| 摘要 |
The invention relates to an apparatus (10) for the recognition of the presence of an object (110) in space (100) in accordance with the pulsed time-of-flight method having a pulsed laser (20) which transmits light pulses into the space (100) in a controlled manner, having a photoreceiver arrangement (40) which receives the light pulses reflected back from the object (110) present in the space, having an evaluation circuit which determines a distance signal characteristic for the distance (d) of the object (110) from the pulsed laser (20) from the time (t) between the transmission and the reception of a light pulse, and having a first light deflection apparatus (50) which outputs a first angular position signal representative of its instantaneous angular position to the evaluation circuit, wherein the first light deflection apparatus (50) is arranged rotatably or pivotably about a first axis of rotation (90) and is made for the transmission of light pulses following one another at changing angles in a first plane (95), wherein a second light deflection apparatus (60) is arranged between the first light deflection apparatus (50) and an energy supply of the first light deflection apparatus (50) which outputs a second angular position signal representative of its instantaneous angular position to the evaluation circuit and which has a deflection plate (62) which is arranged rotatably or pivotably about a second axis of rotation (92) and which is made for the changing of the angular position of the first plane (95), with the evaluation circuit determining the position of the object (110) in the space (100) from the first angular position signal, the second angular position signal and the distance signal, and with the apparatus (10) being arranged in a housing (140) having a window 142) |
