US 10,650,785 B1Granted

Color management of display device

AssigneeMicrosoft Technology Licensing, LLC

InventorsPietari Tuomisto, William J. Cummings, Dmitry Reshidko, Tuomas Vallius, David Douglas Bohn

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Abstract

MicroLED arrays offer a small form factor solution for the HMD image sources since they do not need a separate illumination optics. Features of the present disclosure implement a MicroLED display system that incorporate a plurality of monochrome projectors (e.g., three MicroLED projectors) to generate three monochrome images (e.g., red, blue, and green images) that are separately input into a single waveguide of the HMD and combined to form an image that is displayed to the user. By utilizing a single waveguide that includes a plurality of spatially separated input regions (e.g., a region for inputting blue light, a region for inputting red light, a region for inputting green light), the MicroLED display system of the present disclosure may reduce the form factor of the HMD device because of the reduced number of plates that may be required to combine the three monochrome images.

Claims19

Dependent claims

A method for calibrating an image on a display device, comprising:

detecting, at a camera, light rays output from an optical waveguide, wherein the light rays correspond to a plurality of monochrome color versions of an image generated by a plurality of monolithic micro light emitting diode (MicroLED) projectors;
determining a first position of a first version of the image from the plurality of monochrome color versions of the image, wherein the first version of the image is generated in first monochrome color by a first projector;
determining a second position of a second version of the image from the plurality of monochrome color versions of the image, wherein the second version of the image is generated in second monochrome color by a second projector;
measuring an image displacement between the first position of the first version of the image and the second position of the second version of the image to calculate an offset value between the first position and the second position, wherein the image displacement is one or both of lateral displacement or angular rotational displacement;
and
configuring the display device to adjust at least one image output parameter of the plurality of MicroLED projectors such that the output from the optical waveguide of the plurality of monochrome color versions of the image have an overlapping alignment that meets an alignment threshold.

3 more elements

An apparatus for calibrating an image on a display device, comprising:

a memory configured to store instructions;
a processor communicatively coupled with the memory, the processor configured to executed the instructions to:
detect, at a camera, light rays output from an optical waveguide, wherein the light rays correspond to a plurality of monochrome color versions of an image generated by a plurality of monolithic micro light emitting diode (MicroLED) projectors;
determine a first position of a first version of the image from the plurality of monochrome color versions of the image, wherein the first version of the image is generated in first monochrome color by a first projector;
determine a second position of a second version of the image from the plurality of monochrome color versions of the image, wherein the second version of the image is generated in second monochrome color by a second projector;
measure an image displacement between the first position of the first version of the image and the second position of the second version of the image to calculate an offset value between the first position and the second position, wherein the image displacement is one or both of lateral displacement or angular rotational displacement;
and
configure the display device to adjust at least one image output parameter of the plurality of MicroLED projectors such that the output from the optical waveguide of the plurality of monochrome color versions of the image have an overlapping alignment that meets an alignment threshold.

5 more elements

A non-transitory computer readable medium storing instructions, executable by a processor, for calibrating an image on a display device, comprising instructions for:

detecting, at a camera, light rays output from an optical waveguide, wherein the light rays correspond to a plurality of monochrome color versions of an image generated by a plurality of monolithic micro light emitting diode (MicroLED) projectors;
determining a first position of a first version of the image from the plurality of monochrome color versions of the image, wherein the first version of the image is generated in first monochrome color by a first projector;
determining a second position of a second version of the image from the plurality of monochrome color versions of the image, wherein the second version of the image is generated in second monochrome color by a second projector;
measuring an image displacement between the first position of the first version of the image and the second position of the second version of the image to calculate an offset value between the first position and the second position, wherein the image displacement is one or both of lateral displacement or angular rotational displacement;
and
configuring the display device to adjust at least one image output parameter of the plurality of MicroLED projectors such that the output from the optical waveguide of the plurality of monochrome color versions of the image have an overlapping alignment that meets an alignment threshold.

3 more elements

Dependencies are inferred from the claim text.