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Discretization of detection zone

  • US 10,488,492 B2
  • Filed: 09/08/2015
  • Issued: 11/26/2019
  • Est. Priority Date: 09/09/2014
  • Status: Active Grant
First Claim
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1. A method of detection of an object in a detection zone, for a scannerless optical rangefinder operating in pulsed Time-of-Flight operation, the method comprising:

  • pulsating a light source to illuminate said detection zone using an emission beam;

    receiving a reflection from said detection zone, collecting said reflection using an optical detector and generating a reflection signal;

    discretizing said detection zone with at least one of emission optics and reception optics to create a predetermined detection pattern in said detection zone, said predetermined detection pattern being one of regular, uniform and random, said predetermined detection pattern including passive areas and discrete active detection areas within said detection zone;

    inputting said reflection signal and a background signal into a processor;

    detecting an object in one of said discrete active detection areas by comparing a change in said reflection signal with a background signal using a processor.

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