Patent ID: 9332246
Filing Date: 2016-05-03
CPC Classification: G01B,G01S,G06T,H04N

Claim Text:
1. A time of flight (TOF) camera unit for an optical surveillance system, said TOF camera unit comprising: a radiation emitting unit for emitting a modulated light along a first optical path and along a second optical path in tandem, wherein the first optical path intersects a first plane of a surveillance area and the second optical path intersects a second plane of the surveillance area; a radiation detecting unit for receiving the modulated light reflected from each of the first plane and the second plane of the surveillance area; and at least one mirror for deflecting the modulated light emitted along the second optical path onto said second plane and for deflecting the modulated light reflected from said second plane back to the radiation detecting unit, wherein the radiation detecting unit is configured to detect a phase shift in the modulated light reflected from each of the first plane and the second plane and to generate a three-dimensional image based on the phase shift detected in the modulated light from the first and second optical paths.