Patent ID: 9423499
Filing Date: 2016-08-23
CPC Classification: G01S

Claim Text:
1. A laser scanner comprising: a light transmitter for transmitting a light signal into a monitored zone, a light receiver for generating a received signal from the light signal remitted by objects in the monitored zone, a test light transmitter for generating a test light signal, a movable deflection unit for the periodic deflection of the light signal to scan the monitored zone in the course of the movement, and an evaluation unit for detecting the objects with reference to the received signal and for testing the signal path from the transmission of the light signal up to the detection of the objects, wherein the evaluation unit is configured also to detect objects in angular positions of the deflection unit in which the signal path is tested, and wherein the test light transmitter is orientated such that the test light signal within the laser scanner moves directly or via a scattering object within the housing or via the deflection unit to the light receiver.