Waveguide display with spatially switchable grating
First Claim
1. A near-eye-display (NED) system comprising:
- an eye tracking system configured to track a location of an eye of a user of the NED;
a light source configured to emit an image light;
an output waveguide comprising;
an input grating configured to receive the image light emitted from the light source and expand the received image light in at least one dimension to transmit an expanded image light, anda dynamic output grating comprising a plurality of liquid crystal (LC) pixels that are arranged in a two-dimensional array, the plurality of LC pixels including an active subset of LC pixels that are configured to out-couple the expanded image light from the output waveguide to the tracked location in accordance with switching instructions; and
a controller configured to generate the switching instructions and provide the switching instructions to the dynamic output grating.
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Accused Products
Abstract
A near-eye-display (NED) includes an eye tracking system and a waveguide display. The eye tracking system tracks locations based on a location of the user'"'"'s eyes. The waveguide display includes a light source, an output waveguide and a controller. The output waveguide includes a dynamic output grating that outputs an expanded image light to the tracked eyebox locations. The decoupling grating is a 2D array of spatially switchable liquid crystal (LC) pixels including an active subset of LC pixels emitting light to regions within the tracked eyebox locations. The decoupling grating dynamically out-couples the expanded image light to the tracked location based on switching instructions generated and provided by the controller.
19 Citations
16 Claims
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1. A near-eye-display (NED) system comprising:
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an eye tracking system configured to track a location of an eye of a user of the NED; a light source configured to emit an image light; an output waveguide comprising; an input grating configured to receive the image light emitted from the light source and expand the received image light in at least one dimension to transmit an expanded image light, and a dynamic output grating comprising a plurality of liquid crystal (LC) pixels that are arranged in a two-dimensional array, the plurality of LC pixels including an active subset of LC pixels that are configured to out-couple the expanded image light from the output waveguide to the tracked location in accordance with switching instructions; and a controller configured to generate the switching instructions and provide the switching instructions to the dynamic output grating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A waveguide assembly comprising:
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an output waveguide comprising; an input grating configured to receive image light emitted from a light source and expand the received image light in at least one dimension to transmit an expanded image light, and a dynamic output grating comprising a plurality of liquid crystal (LC) pixels that are arranged in a two-dimensional array, the plurality of LC pixels including an active subset of LC pixels that are configured to out-couple the expanded image light from the output waveguide to an eyebox location in accordance with switching instructions; and a controller configured to generate the switching instructions and provide the switching instructions to the dynamic output grating. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification