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Method and system for optical imaging using patterned illumination

  • US 10,115,000 B2
  • Filed: 12/11/2015
  • Issued: 10/30/2018
  • Est. Priority Date: 12/11/2015
  • Status: Active Grant
First Claim
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1. An electronic device for imaging an input object, comprising:

  • a display comprising a sensing surface and an array of display pixels;

    a processing system communicatively coupled to the display, the processing system configured to;

    selectively illuminate one or more of the display pixels according to a pattern;

    acquire image data, from one or more detector pixels of the display, of the input object in contact with the sensing surface, wherein the image data corresponds to light from the illuminated display pixels that is reflected at the sensing surface of the display; and

    process an image of the input object from the image data based upon the pattern,wherein the processing system is configured to select the one or more detector pixels from a region surrounding the illuminated display pixels, the region being inside of an outer boundary that is defined by a first critical angle resulting from an interface between a surface of the input object and the sensing surface.

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