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Virtual and augmented reality systems and methods

  • US 10,629,004 B2
  • Filed: 10/10/2017
  • Issued: 04/21/2020
  • Est. Priority Date: 11/27/2013
  • Status: Active Grant
First Claim
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1. A system for displaying virtual content to a user, comprising:

  • at least one light source to multiplex a plurality of light beams to display a respective plurality of light patterns associated with one or more frames of image data;

    first, second, and third planar waveguides to receive the plurality of light beams and to direct the plurality of light beams toward an exit pupil, wherein the first, second, and third planar waveguides are stacked along an optical axis of the user; and

    at least one optical element to modify a focus of a light beam of the plurality of light beams directed by the first, second, and third planar waveguides,wherein the first, second, and third planar waveguides have first, second, and third wavefront curvatures corresponding to respective first, second, and third focal distances,wherein the first focal distance is a focal distance of a determined accommodation of the user'"'"'s eyes,wherein the second focal distance is based at least in part on the determined accommodation and is located at a first predetermined error margin farther from the user'"'"'s eyes relative to the first focal distance,wherein the third focal distance is based at least in part on the determined accommodation and is located at a second predetermined error margin closer to the user'"'"'s eyes relative to the first focal distance, andwherein the first, second, and third planar waveguides are configured to allow a range of accommodation before a physical adjustment of the focus level is necessary due to a change in the accommodation of the user'"'"'s eyes.

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