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US 11,231,581 B2Granted
Near eye 3D display with separate phase and amplitude modulators
AssigneeMagic Leap, Inc.
InventorsZhiheng Jia, Hao Zheng, Jeffrey Todd Daiker, Jeremy A. Grata
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Abstract
Augmented reality glasses include near eye displays the include sources of imagewise amplitude modulated light optical coupled to spatial phase modulators or active zone plate modulators and optically coupled to eye coupling optics. The sources of imagewise amplitude modulated light can include emissive 2D display panels or light sources coupled to imagewise amplitude modulators. The eye coupling optics can include volume holographic diffraction gratings.
Claims14
A near eye display system comprising:
- a light source,
- a spatial amplitude modulator,
- a spatial phase modulator,
- a phase modulator driver coupled to the spatial phase modulator, wherein the phase modulator driver is configured to generate a diffractive lens pattern on the spatial phase modulator, wherein the phase modulator driver is configured to receive depth information and to generate the diffractive lens pattern based on the depth information, and
- an eye coupling optic, wherein the light source is optically coupled to the eye coupling optic through the spatial amplitude modulator and the spatial phase modulator.
2 more elements
A method of generating virtual content comprising:
- generating light via a light source,
- modifying an amplitude of the light via a spatial amplitude modulator, wherein the output is an amplitude modulated light,
- receiving depth information,
- generating a diffraction lens pattern on a spatial phase modulator, the diffraction lens pattern based on the depth information,
- modifying a phase of the amplitude modulated light via the spatial phase modulator, wherein the output is an amplitude and phase modulated light, and
- coupling the amplitude and phase modulated light to an eye via an eye.
3 more elements
Dependencies are inferred from the claim text.