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Waveguide optical element and near-eye display apparatus

  • US 10,330,938 B2
  • Filed: 01/10/2018
  • Issued: 06/25/2019
  • Est. Priority Date: 02/24/2017
  • Status: Active Grant
First Claim
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1. A waveguide optical element, comprising:

  • at least two waveguide plates arranged to overlap in parallel, with a predetermined gap therebetween, each waveguide plate comprising two main surfaces parallel to each other, and configured to transmit light coupled into the waveguide plates in a predetermined direction through total internal reflection; and

    one or more partially reflective surfaces respectively located inside each of the waveguide plates, and arranged within a space between the main surfaces as a beam-split surface at a characteristic angle with the main surfaces;

    wherein the one or more partially reflective surfaces inside the waveguide plates are distributed in different areas along the direction of the main surfaces; and

    wherein there are a plurality of the partially reflective surfaces inside each of the waveguide plates, and numbers of the partially reflective surfaces inside each of the waveguide plates are identical or different.

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