Method and device for opto-electronically determining the position of an object

Method for opto-electronically determining the position of an object (50) through the intermediary of at least one measuring arrangement, which is separated from the object (50) by a medium (31, 52), which is permeable to at least one specific radiation, wherein the measuring arrangement comprises at least

• one active sensor region (S) in the medium having at least two measuring paths (x, y), which are maintained by at least two radiation sources (1, 3, 57), which emit the specific radiation, and at least one radiation receiver (2), which is assigned to the radiation sources, said radiation receiver (2) determining the reflection (53) reflected by the object (50) to create a detection signal, which corresponds to the received radiation, wherein the beginning of the measuring path is spatially determined by the radiation source (1, 3, 57) and the end of the measuring path by the radiation receiver (2),
• one device to determine an initial value (U(t), UR(t), UR(d)) assigned to the individual measuring paths (x, y),
• one evaluation unit (55, 60) to evaluate the initial value (U(t), UR(t), UR(d)), comprising the steps:
• emitting the specific radiation through the intermediary of the radiation sources (1, 3),
• detecting the reflection (53) reflected by the object (50),
• determining the initial value (U(t), UR(t), UR(d)) and its evaluation, characterized in that the evaluation unit (55, 60) determines the position and/or displacement of the object (50) by the evaluation unit determining from the initial value a certain angular curve (g, g′, g″) of the object relative to the radiation sources (1, 3, 57) for a known spatial relationship between the radiation sources.