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System and method for mitigating or preventing eye damage from structured light IR/NIR projector systems

  • US 10,694,168 B2
  • Filed: 04/09/2019
  • Issued: 06/23/2020
  • Est. Priority Date: 04/22/2018
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a) a structured light (SL) projector having a multi-light-source array that projects a SL pattern onto an object;

    b) a first camera for imaging the light pattern projected onto the object and, optionally, for imaging the object to provide a first stream of frames;

    c) a multi-light-source array controller configurable to control separately an on or off status and/or an intensity of each light source in the multi-light-source array; and

    d) an algorithm operative to detect in the first camera frames SL pattern elements projected onto the object, to detect eyes of a user, to compare a position of each projected SL pattern element with a position of the detected eyes, and to send commands to the multi-light-source array controller to turn off or reduce the intensity of array light sources that are projected or likely to be projected onto the user'"'"'s eyes.

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