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Miniature structured light illuminator

  • US 9,553,423 B2
  • Filed: 02/27/2016
  • Issued: 01/24/2017
  • Est. Priority Date: 02/27/2015
  • Status: Active Grant
First Claim
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1. A compact structured light optical module comprising:

  • a structured light source including;

    an array of surface emitting light sources to generate one or more light beams in a pattern determined according to the array geometry and size, wherein said array of surface emitting light sources is one selected from a group consisting of a VCSEL array and a RC-LED array, and wherein the surface emitting light sources are configured with differently shaped current confinement apertures to generate light patterns having different shapes, so as to alter microstructure of the structured light illumination pattern by selectively superimposing said light patterns having different shapes;

    an array of microlenses integrated with the array of light sources, wherein a central axis of said one or more microlens is positioned to have a pre-determined lateral displacement with respect to a central axis of the corresponding one or more light beams, such that said each one or more microlens deflects corresponding said one or more light beams proportionally by a respective pre-determined angle along a different axis with respect to undeflected central axis of the one or more light beams to generate a structured light illumination pattern, andone or more optical elements for projecting the structured light illumination pattern at a distant plane.

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