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See-through computer display systems

  • US 9,933,622 B2
  • Filed: 03/25/2015
  • Issued: 04/03/2018
  • Est. Priority Date: 01/21/2014
  • Status: Active Grant
First Claim
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1. A compact head-worn display with multiply folded optics providing displayed images overlaid onto a see-through view of a surrounding environment comprising:

  • a solid prism of a first material with a first refractive index, wherein the solid prism comprises an angled planar surface to fold an optical axis and a surface that provides optical power with a curved surface;

    a lens with optical power made of a second material with a second refractive index that is different from the first refractive index, wherein the lens is positioned proximate the curved surface of the solid prism; and

    an image source that provides image light associated with the displayed images, wherein the image source projects the image light through the lens and into the solid prism;

    wherein the first and second material'"'"'s refractive indices are selected to reduce a lateral color in the displayed images; and

    wherein the solid prism further comprises a second surface that provides optical power with a curved surface with a second lens proximate the second surface, wherein the second lens has a third refractive index, which is different than the first and second refractive index.

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