US 2024/0393591 A1 · Systems and Methods for Optical Alignment

Abstract

A display device may include first and second display modules that provide image light to first and second waveguides. The waveguides may direct the image light to first and second eye boxes. Each display module may include optics mounted to a housing and mechanical alignment structures that mechanically adjust the position of an optical axis of the optics. The alignment structures may rotate the entire housing, may mechanically translate the optics, may adjust the position of a spatial light modulator within the module, and/or control circuitry may change a subset of pixels used by the modulator to compensate for optical misalignment between the first and second eye boxes. The device may include optical misalignment sensors that detect the optical misalignment. The control circuitry may compensate for the optical misalignment as detected by the optical misalignment sensors.

Claims20

Dependent claims

A display system comprising:

a waveguide;
an input coupler on the waveguide and configured to couple image light into the waveguide;
an output coupler on the waveguide and configured to couple the image light out of the waveguide;
and
a display module configured to produce the image light, the display module comprising:
a display module housing,
at least one light source within the display module housing,
collimating optics mounted to the display module housing and having an optical axis, the collimating optics being configured to direct the image light towards the input coupler, and
alignment structures configured to adjust a position of the optical axis relative to the waveguide.

6 more elements

A display system comprising:

a first display module configured to produce first image light;
a second display module configured to produce second image light;
a first waveguide having first and second output couplers, wherein the first output coupler is configured to couple a first portion of first image light out of the first waveguide;
a second waveguide having third and fourth output couplers, wherein the third output coupler is configured to couple a first portion of the second image light out of the second waveguide;
a housing portion that couples the first waveguide to the second waveguide;
at least one image sensor in the housing portion, wherein the second output coupler is configured to couple a second portion of the first image light out of the first waveguide and towards the at least one image sensor in the housing portion, wherein the fourth output coupler is configured to couple a second portion of the second image light out of the second waveguide and towards the at least one image sensor in the housing portion, and wherein the at least one image sensor is configured to generate image sensor data based on the second portion of the first image light and the second portion of the second image light;
and
control circuitry configured to identify a position of the first image light relative to the second image light based on the image sensor data generated by the at least one image sensor.

5 more elements

Dependencies are inferred from the claim text.

Systems and Methods for Optical Alignment

Life of this patent

Systems and Methods for Optical Alignment

Life of this patent

Abstract

Claims20