Systems, apparatuses, and methods for monochromatic display waveguides
AssigneeFacebook Technologies, LLC
InventorsNicholas Daniel Trail, Pasi Saarikko
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Abstract
The disclosed apparatus may include a waveguide configuration that may include (1) a coupling area having at least one coupling element configured to receive a plurality of monochromatic images, where each of the monochromatic images is of a predetermined wavelength of light, (2) a propagation area in which light, received via the at least one coupling element, moves within a length of the waveguide configuration, and (3) a decoupling area that extends along the propagation area and includes decoupling elements that project a polychromatic image toward an eyebox, where the polychromatic image includes the monochromatic images of the predetermined wavelengths of light. Associated systems and devices are also provided herein.
Claims17
An apparatus comprising:
- a waveguide configuration including:
- a coupling area having at least one coupling element configured to receive a plurality of monochromatic images, wherein each of the monochromatic images is of a predetermined wavelength of light;
- a propagation area in which light, received via the at least one coupling element, moves within a length of the waveguide configuration;
- and
- a decoupling area that extends along the propagation area and comprises decoupling elements that project a polychromatic image toward an eyebox, the polychromatic image comprising the monochromatic images of the predetermined wavelengths of light.
A system comprising:
- a first waveguide configuration comprising:
- a first waveguide having a first top surface and a first bottom surface disposed opposite the first top surface;
- a first coupling element accessible via the first top surface of the first waveguide, the first coupling element configured to receive a first monochromatic image and propagate the first monochromatic image laterally within the first waveguide;
- a first decoupling element that projects a plurality of instances of the first monochromatic image toward an eyebox;
- a second waveguide having a second top surface and a second bottom surface disposed opposite the second top surface, wherein the first decoupling element projects the plurality of instances of the first monochromatic image through the second waveguide;
- a second coupling element accessible via the second top surface of the second waveguide, the second coupling element configured to receive a second monochromatic image and propagate the second monochromatic image laterally within the second waveguide;
- and
- a second decoupling element that projects a plurality of instances of the second monochromatic image toward the eyebox, the pluralities of instances of the first and second monochromatic images being combined to produce a plurality of polychromatic images.
A device comprising:
- a head-mounted display comprising:
- a plurality of monochromatic emitter arrays, at least two of the plurality of monochromatic emitter arrays producing monochromatic images of different wavelengths of light;
- and
- a waveguide configuration including:
- a top surface,
- a bottom surface disposed opposite the top surface,
- a coupling area having at least one coupling element configured to receive the monochromatic images,
- a propagation area in which light received via the at least one coupling element moves within a length of the waveguide configuration and replicates the monochromatic images to produce monochromatic pupil replications;
- and
- a decoupling area extending along the propagation area, the decoupling area comprising decoupling elements that project a plurality of instances of a polychromatic image toward an eyebox through the bottom surface, the polychromatic image resulting from combination of the monochromatic images of different wavelengths of light.
Dependencies are inferred from the claim text.