Light projector using an acousto-optical control device
AssigneeMagic Leap, Inc.
InventorsHudson 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.
Claims15
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 comprises a first modulator and a second modulator.
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 comprises a substrate having a first side and a second side orthogonal to the first side,
- the first side of the substrate comprises:
- a first coupler,
- a first waveguide, and
- a first transducer, and
- the second side of the substrate comprises:
- a second coupler
- a second waveguide, and
- a second transducer.
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;
- and
- 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, where each of the plurality of diffractive optical elements correspond to a different depth plane of a series of images,
- wherein:
- the acousto-optical scanner comprises a horizontal modulator and a vertical modulator,
- the horizontal modulator horizontally deflects portions of the image light,
- the vertical modulator receives horizontally deflected image light from the horizontal modulator, and
- the vertical modulator vertically deflects portions of the horizontally deflected image light.
Dependencies are inferred from the claim text.