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Multiuse 3D IR for electronic device

  • US 10,289,820 B2
  • Filed: 02/24/2015
  • Issued: 05/14/2019
  • Est. Priority Date: 02/24/2015
  • Status: Active Grant
First Claim
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1. A portable electronic device comprising:

  • a device housing and a plurality of IR LEDs mounted and configured to emit IR illumination outward from the device housing;

    one or more light-steering elements associated with each IR LED;

    a device state sensor system configured to sense device parameters reflective of a device state; and

    a controller configured to;

    determine a device mode based on the sensed device parameters, wherein the device mode is one of an approach mode wherein the device is lying still horizontally and locked, an iris mode wherein the device is handheld and tilted within an inclination range, and a gesture mode wherein the device is in neither the approach mode nor the iris mode; and

    drive the IR LEDs and the light-steering elements associated with each IR LED to direct IR illumination angularly away from a vertical device axis centered on the device when the device mode is the approach mode, to direct IR illumination in one of a direction parallel to the vertical device axis and angularly inward toward the vertical device axis when the device mode is the gesture mode, and to direct IR illumination to a point that is within one foot of the device when the device mode is the iris mode.

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