HEAD MOUNTED DISPLAY
First Claim
Patent Images
1. A head-mounted or helmet-mounted display apparatus comprising:
- an optical element which in use is disposed in front of an eye of a user and which is curved in both azimuth and elevation relative to the eye and configured to operate as a waveguide;
a source of image-bearing light; and
diffraction means for propagation of image-bearing light through the optical element and for releasing the image bearing light from the optical element, the optical element and the diffraction means having optical powers such that the released light provides a visible image to the user'"'"'s eye.
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Abstract
A helmet or head-mounted apparatus has a visor or other curved optical element in front of at least one eye of a wearer, which element also is used as a waveguide. Image-bearing light is injected into the waveguide via an input diffractive element, and propagates through the visor to an output diffractive element which releases the light. The optical powers of the curved waveguide and the input and output diffractive elements are selected so that the released light is delivered as an image to the users eye.
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Citations
15 Claims
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1. A head-mounted or helmet-mounted display apparatus comprising:
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an optical element which in use is disposed in front of an eye of a user and which is curved in both azimuth and elevation relative to the eye and configured to operate as a waveguide; a source of image-bearing light; and
diffraction means for propagation of image-bearing light through the optical element and for releasing the image bearing light from the optical element, the optical element and the diffraction means having optical powers such that the released light provides a visible image to the user'"'"'s eye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification