DUAL DEPTH EXIT PUPIL EXPANDER
First Claim
1. An eyepiece for a head mounted display comprising:
- a waveguide having a front face, a rear face and a plurality of edges, said front face and said rear face having lateral dimensions, said edges having a thickness less than the lateral dimensions of said front face and said rear face such that said waveguide can guide light therein from a location closer to one edge toward a location closer to another edge by total internal reflection from said front and rear faces;
at least one out-coupling optical element configured to receive light guided within said waveguide by total internal reflection from said front face and said rear face and to out-couple light out of said front face of said waveguide; and
at least one optical element having optical power such that said eyepiece outputs a first portion of said light guided within said waveguide from a first region of said eyepiece as if said light originated from a first depth with respect to said waveguide and a second portion of light guided within said waveguide from a second region of said eyepiece as if said light originated from a second depth with respect to said waveguide, said second region being laterally displaced with respect to said first region.
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0 Petitions
Accused Products
Abstract
An optical device includes a waveguide including an in-coupling optical element configured to in-couple light into the waveguide, a light distributing element configured to receive light from the in-coupling optical element and distribute light at a selected wavelength, and an out-coupling optical element configured to receive light from the light distributing element and out-couple light out of the waveguide. The out-coupling optical element includes a first region configured to out-couple light at a first depth plane based on a lens function of the first region and a second region configured to out-couple light at a second depth plane based on a different lens function of the second region.
63 Citations
29 Claims
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1. An eyepiece for a head mounted display comprising:
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a waveguide having a front face, a rear face and a plurality of edges, said front face and said rear face having lateral dimensions, said edges having a thickness less than the lateral dimensions of said front face and said rear face such that said waveguide can guide light therein from a location closer to one edge toward a location closer to another edge by total internal reflection from said front and rear faces; at least one out-coupling optical element configured to receive light guided within said waveguide by total internal reflection from said front face and said rear face and to out-couple light out of said front face of said waveguide; and at least one optical element having optical power such that said eyepiece outputs a first portion of said light guided within said waveguide from a first region of said eyepiece as if said light originated from a first depth with respect to said waveguide and a second portion of light guided within said waveguide from a second region of said eyepiece as if said light originated from a second depth with respect to said waveguide, said second region being laterally displaced with respect to said first region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A head mounted display comprising:
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a frame configured to mount on a wearer; an eyepiece comprising; a waveguide having a front face, a rear face and a plurality of edges, said front face and said rear face having lateral dimensions, said edges having a thickness less than the lateral dimensions of said front face and said rear face such that said waveguide can guide light therein from a location closer to one edge toward a location closer to another edge by total internal reflection from said front and rear faces; at least one out-coupling optical element configured to receive light guided within said waveguide by total internal reflection from said front face and said rear face and to out-couple light out of said front face of said waveguide; and at least one optical element having optical power such that said eyepiece outputs a first portion of said light guided within said waveguide from a first region of said eyepiece as if said light originated from a first depth with respect to said waveguide and a second portion of light guided within said waveguide from a second region of said eyepiece as if said light originated from a second depth with respect to said waveguide, said second region being laterally displaced with respect to said first region; and a display configured to selectively couple into the eyepiece light comprising near image content and light comprising distant image content. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification