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US 12,437,687 B2Granted
Alignment of waveguide and display in smartglasses
AssigneeGoogle Inc.
InventorsDaniel Adema, Shreyas Potnis, Eliezer Glik
Life of this patent
Estimating the term…
Abstract
Improved techniques of detecting angular misalignment between a display and a waveguide of a smartglasses device includes providing a detection mechanism for the display such that the location of a misalignment can indicate how to compensate for the misalignment.
Claims9
A method, comprising:
- emitting, from an emitter of a first pixel of a plurality of pixels of a display of a head worn device, light toward an incoupler of a waveguide of the head worn device, the first pixel having a first location in the display;
- detecting, from a second pixel of the plurality of pixels, light reflected from the incoupler of the waveguide, the second pixel being in a read mode and including an emitter configured to function as a detector that identifies a second location of the second pixel in the display;
- determining a misalignment between the display and the waveguide based on a difference between the first location and the second location;
- and
- shifting the plurality of pixels based on the misalignment.
2 more elements
A computer program product comprising a nontransitory storage medium, the computer program product including code that, when executed by processing circuitry, causes the processing circuitry to perform a method, the method comprising:
- emitting, from an emitter of a first pixel of a plurality of pixels of a display of a head worn device, light toward an incoupler of a waveguide of the head worn device, the first pixel having a first location in the display;
- detecting, from a second pixel of the plurality of pixels, light reflected from the incoupler of the waveguide, the second pixel being in a read mode and including an emitter configured to function as a detector that identifies a second location of the second pixel in the display;
- determining a misalignment between the display and the waveguide based on a difference between the first location and the second location;
- and
- shifting the plurality of pixels based on the misalignment.
2 more elements
An apparatus, the apparatus comprising:
- memory;
- and
- processing circuitry coupled to the memory, the processing circuitry being configured to:
- emit, from an emitter of a first pixel of a plurality of pixels of a display of a head worn device, light toward an incoupler of a waveguide of the head worn device, the first pixel having a first location in the display;
- detect, from a second pixel of the plurality of pixels, light reflected from the incoupler of the waveguide, the second pixel being in a read mode and including an emitter configured to function as a detector that identifies a second location of the second pixel in the display;
- determine a misalignment between the display and the waveguide based on a difference between the first location and the second location;
- and
- shift the plurality of pixels based on the misalignment.
5 more elements
Dependencies are inferred from the claim text.