Patent ID: 9395440
Filing Date: 2016-07-19
CPC Classification: G01C,G01S

Claim Text:
1. An optical distance measuring device comprising: a pulsed radiation source implemented to transmit, in a temporally contiguous radiation pulse period, a radiation pulse with a pulse duration that is shorter than the radiation pulse period, and to transmit no radiation pulse in a temporally contiguous dark period; a detector for detecting different amounts of radiation in, starting in, a phase-locked manner with the radiation pulse, two overlapping detection periods during the radiation pulse period to capture reflections of the radiation pulse at a surface of an object and a background radiation and in two detection periods during the dark period to capture a background radiation; and an evaluator determining a signal depending on a distance of the optical distance measuring device to the object, based on the detected amounts of radiation by determining processed signals from the different amount of radiations detected in the two overlapping detection periods during the radiation pulse period, and from the different amount of radiations detected in the two detection periods during the dark period.