Method and optical sensor for detecting objects in a surveillance range

摘要

The method involves amplifying an oscillating component of a receiver signal for evaluation. A detection signal is output, when a comparison signal deduced from the receiver signal is greater than a preset evaluation threshold. An extraneous light component impinging on a receiver (40) is considered during the evaluation. The threshold is increased, when the extraneous light component increases. The comparison signal is increased with respect to a factor corresponding to the increased extraneous light component. An independent claim is also included for an optical sensor for detecting an object in a monitoring region.