Optoelectronic device for detecting objects, uses transmitters to emit light rays, receiver to pick up transmitted light rays, and multiple receiving elements fitted at preset distances from each other

摘要

Transmitter (3) emits light rays (2) and receiver (5) picks up the transmitted light rays (4). In the path of the transmitting light rays there is a filter (8) with changing space dimensions. A transmission coefficient's dependence on location adapts to an object with a homogenous surface and in an illuminating plane.