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SYSTEMS, DEVICES, AND METHODS FOR EYEBOX EXPANSION IN WEARABLE HEADS-UP DISPLAYS

  • US 20160377866A1
  • Filed: 02/17/2016
  • Published: 12/29/2016
  • Est. Priority Date: 02/17/2015
  • Status: Active Grant
First Claim
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1. A wearable heads-up display comprising:

  • a support structure that in use is worn on a head of a user;

    a scanning laser projector carried by the support structure;

    a holographic combiner carried by the support structure, wherein the holographic combiner is positioned within a field of view of an eye of the user when the support structure is worn on the head of the user; and

    an optical splitter carried by the support structure and positioned in an optical path between the scanning laser projector and the holographic combiner, the optical splitter comprising at least one optical element arranged to receive light signals generated by the scanning laser projector and redirect each light signal towards the holographic combiner effectively from one of N spatially-separated virtual positions for the scanning laser projector, where N is an integer greater than 1, the particular virtual position for the scanning laser projector from which a light signal is redirected by the optical splitter determined by a point of incidence at which the light signal is received by the optical splitter, and wherein the holographic combiner comprises at least one hologram positioned and oriented to redirect the light signals towards the eye of the user.

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