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NEAR-TO-EYE DISPLAY WITH DIFFRACTION GRATING THAT BENDS AND FOCUSES LIGHT

  • US 20130100362A1
  • Filed: 10/24/2011
  • Published: 04/25/2013
  • Est. Priority Date: 10/24/2011
  • Status: Active Grant
First Claim
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1. A head mounted display (“

  • HMD”

    ) for displaying computer generated image (“

    CGI”

    ) light to a user, the HMD comprising;

    a frame assembly to support the HMD for wearing on a head of the user;

    an eyepiece secured to the frame assembly and positioned to form a see-through display, the eyepiece including;

    an optically transmissive substrate; and

    a repeating pattern of diffraction elements disposed across a viewing region of the optically transmissive substrate and organized into a reflective diffraction grating that both bends and focuses the CGI light; and

    a light engine mounted to the frame assembly and oriented to illuminate the reflective diffraction grating with the CGI light.

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