Light projector using an acousto-optical control device
AssigneeMagic Leap, Inc.
InventorsWilliam Hudson Welch, Jeremy A. Grata, Marwan Hussein
Life of this patent
Estimating the term…
Abstract
An approach for projecting light may be implemented using a acousto-optical depth switch that uses surface acoustic waves produced along a substrate to guide image light to different areas. The surface acoustic waves may be generated on a substrate using a transducer. Surface acoustic waves of different frequencies can guide image light onto different optical elements at different physical positions. The optical elements may be configured to show objects in an image at different distances from a viewer.
Claims20
A system for projecting light, the system comprising:
- a light generator that generates image light that corresponds to a series of images;
- a display device that receives the image light generated by the light generator;
- an acousto-optical scanner, wherein the display device deflects the image light onto the acousto-optical scanner and the acousto-optical scanner deflects portions of the image light onto a plurality of diffractive optical elements, wherein each of the plurality of diffractive optical elements corresponds to a different depth plane of the series of images,
- wherein the acousto-optical scanner is configured to generate first surface acoustic waves to deflect portions of the image light in a first direction, and
- wherein the acousto-optical scanner is configured to generate second surface acoustic waves to deflect portions of the image light in a second direction.
A system for projecting light, the system comprising:
- a light generator that generates image light that corresponds to a series of images;
- a display device that receives the image light generated by the light generator;
- an acousto-optical depth switch, wherein the display device deflects the image light onto the acousto-optical depth switch and the acousto-optical depth switch deflects portions of the image light onto a plurality of diffractive optical elements, wherein each of the plurality of diffractive optical elements corresponds to a different depth plane of the series of images,
- wherein the acousto-optical depth switch is configured to generate surface acoustic waves in a plurality of frequencies including a first frequency and a second frequency that is different from the first frequency, and
- wherein the first frequency deflects a portion of the image light onto a first diffractive optical element of the plurality of diffractive optical elements, and the second frequency deflects a portion of the image light onto a second diffractive element of the plurality of diffractive optical elements.
Dependencies are inferred from the claim text.