Patent ID: 9367741
Filing Date: 2016-06-14
CPC Classification: F41G,F42C,G01S,G06K,H04N

Claim Text:
1. A deviation indicator with infrared imagery comprising: an infrared matrix detector, that forms a plurality of successive infrared images, an optical aiming device, through which said infrared matrix detector observes an approaching target, and a control and processing device for controlling said infrared matrix detector and for processing the successive infrared images formed on said infrared matrix detector; an infrared laser that emits infrared laser pulses as directed by said optical aiming device toward said approaching target, in which echoes of said infrared laser pulses reflected by said target are received by said infrared matrix detector through said optical aiming device; said control and processing device processing said echoes formed on said infrared matrix detector to determine a distance at which said approaching target is situated from said deviation indicator, and assigns a portion of said infrared matrix detector to said echoes of said infrared laser pulses, such that when a sum of signals received by a number of pixels in said portion of said infrared matrix detector is above a predetermined threshold, said control and processing device determines that an image is received in said portion of said infrared matrix detector; said control and processing device associating a plurality of successive echo acquisition windows with each of said infrared laser pulses emitted by said infrared laser through said infrared matrix detector; and an opening of the plurality of successive echo acquisition windows is effected with a plurality of decreasing successive delays corresponding to decreasing successive expected distances between said deviation indicator and said approaching target with respect to the emission of the corresponding infrared laser pulse, up to a predetermined low value.