×

Systems, devices, and methods for variable luminance in wearable heads-up displays

  • US 10,459,223 B2
  • Filed: 12/12/2017
  • Issued: 10/29/2019
  • Est. Priority Date: 08/12/2016
  • Status: Active Grant
First Claim
Patent Images

1. A wearable heads-up display (“

  • WHUD”

    ) comprising;

    a support structure worn on a head of a user;

    a laser projector carried by the support structure, the laser projector comprising;

    at least one laser diode to provide a laser light; and

    at least one scan mirror positioned to receive the laser light from the at least one diode and controllably orientable to redirect the laser light over a range of angles;

    a liquid crystal element positioned in an optical path of the laser light between the at least one laser diode and the at least one scan mirror;

    a controller communicatively coupled to the liquid crystal element, wherein an opacity of the liquid crystal element is modulatable in response to signals from the controller and wherein the laser light is attenuated in response to the modulated opacity of the liquid crystal element; and

    a transparent combiner carried by the support structure and positioned within a field of view of the user, the transparent combiner to direct the laser light from an output of the laser projector into the field of view of the user.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×