| 摘要 |
The invention relates to an optoelectronic device which comprises several transmitters (A-D) and at least one receiver (E) for detecting the position and movement of an object. Various light paths are created between the transmitters and the receiver, the transmitters being driven by a timing circuit with an oscillator (10). An evaluation device detects the movement of the object on a surface two-dimensionally. For the three-dimensional detection of the position and/or the movement of the object, the timing circuit switches the transmitter and receiver to another cycle so that the space into which the transmitter radiates is evenly illuminated, as far as possible. Based on the rays reflected by the object during the other cycle, the evaluation device establishes a value for determining the distance (d) of the object (O) from the surface (figure 7) by taking a value into account, said value being detected shortly before the object came into contact with the surface. |
