Environmentally isolated waveguide display
First Claim
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1. A waveguide display, comprising:
- an input image generator providing image light projected over a field of view;
a waveguide having first and second external surfaces; and
at least one grating optically coupled to said waveguide for extracting light from said waveguide towards a viewer of said display,wherein said waveguide has a lateral refractive index variation between said external surfaces that prevents rays propagating within said waveguide from optically interacting with at least one of said external surfaces and wherein said waveguide contains a GRIN medium, wherein said grating is disposed within said GRIN medium.
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Abstract
A waveguide display having an input image generator providing image light projected over a field of view; a waveguide having first and second external surfaces; and at least one grating optically coupled to the waveguide for extracting light towards a viewer. The waveguide has a lateral refractive index variation between said external surfaces that prevents any ray propagated within the waveguide from optically interacting with at least one of the external surfaces.
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Citations
18 Claims
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1. A waveguide display, comprising:
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an input image generator providing image light projected over a field of view; a waveguide having first and second external surfaces; and at least one grating optically coupled to said waveguide for extracting light from said waveguide towards a viewer of said display, wherein said waveguide has a lateral refractive index variation between said external surfaces that prevents rays propagating within said waveguide from optically interacting with at least one of said external surfaces and wherein said waveguide contains a GRIN medium, wherein said grating is disposed within said GRIN medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification