Image waveguide with mirror arrays
First Claim
Patent Images
1. An optical apparatus for a heads up display, the optical apparatus comprising:
- a waveguide including first and second surfaces being substantially parallel and opposite to each other, the waveguide including an in-coupling region for receiving input light into the waveguide through the second surface and an out-coupling region for emitting output light from the waveguide out the second surface;
a one dimensional (“
1D”
) array of in-coupling mirror structures disposed in or on the waveguide along the first surface at the in-coupling region of the waveguide and orientated to reflect the input light, after entering through the second surface, along the waveguide towards the out-coupling region as guided light; and
a two dimensional (“
2D”
) array of out-coupling mirror structures disposed in or on the waveguide along the first surface at the out-coupling region of the waveguide and orientated to reflect the guided light out of the waveguide as the output light.
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Abstract
An image waveguide includes an in-coupling region for receiving input light into the image waveguide and an out-coupling region for emitting output light from the image waveguide. The in-coupling region includes a one dimensional array of in-coupling mirror structures orientated to reflect the input light within the waveguide towards the out-coupling region as guided light. The out-coupling region includes a two dimensional array of out-coupling mirror structures orientated to reflect the guided light out of the waveguide as the output light.
269 Citations
20 Claims
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1. An optical apparatus for a heads up display, the optical apparatus comprising:
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a waveguide including first and second surfaces being substantially parallel and opposite to each other, the waveguide including an in-coupling region for receiving input light into the waveguide through the second surface and an out-coupling region for emitting output light from the waveguide out the second surface; a one dimensional (“
1D”
) array of in-coupling mirror structures disposed in or on the waveguide along the first surface at the in-coupling region of the waveguide and orientated to reflect the input light, after entering through the second surface, along the waveguide towards the out-coupling region as guided light; anda two dimensional (“
2D”
) array of out-coupling mirror structures disposed in or on the waveguide along the first surface at the out-coupling region of the waveguide and orientated to reflect the guided light out of the waveguide as the output light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A head mounted display for rendering an augmented reality to a user, the head mounted display comprising:
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a pair of waveguides each including; first and second surfaces being substantially parallel and opposite to each other; an in-coupling region for receiving input light through the second surface and an out-coupling region for emitting output light out the second surface; a one dimensional (“
1D) array of in-coupling mirror structures disposed along the first surface at the in-coupling region and orientated to reflect the input light, after entering through the second surface, towards the out-coupling region as guided light; anda two dimensional (“
2D”
) array of out-coupling mirror structures disposed along the first surface at the out-coupling region and orientated to reflect the guided light out of the waveguide through the second surface to an eye of the user as the output light;a pair of image sources each positioned to launch a computer generated image into the in-coupling region of a corresponding one of the waveguides; and a frame assembly to support the pair of waveguides and the pair of image sources for wearing on a head of the user. - View Dependent Claims (18, 19, 20)
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Specification