Display projector with non-uniform pixel resolution
AssigneeMicrosoft Technology Licensing, LLC
InventorsIshan Chatterjee, Bernard Charles Kress
Life of this patent
Estimating the term…
Abstract
A display device includes an array of light emitters and a mirror configured to reflect light from the light emitters toward an image plane. The display device further includes a controller configured to control the array of light emitters and the mirror to sweep the mirror through a range of angles, and selectively enable the light emitters during sweeping of the mirror. The selective enablement of light emitters, and the sweeping of the mirror, are configured to cause emitted light from the light emitters to project a plurality of pixels on/toward the image plane, with the pixels being spaced with a non-uniform resolution.
Claims20
A display device, comprising:
- an array of light emitters;
- a mirror configured to reflect light from the light emitters towards an image plane;
- and
- a controller configured to control the light emitters and the mirror to:
- sweep the mirror through a range of angles, and
- selectively enable the light emitters during sweeping of the mirror, such selective enablement and sweeping configured to cause emitted light from the light emitters to project a plurality of pixels on the image plane, the plurality of pixels spaced with a non-uniform resolution, wherein the selective enablement of light emitters includes toggling the light emitters between an on state and an off state according to a duty cycle for each light emitter and timing information from a clock of the controller, wherein the duty cycle for each light emitter is varied to achieve the non-uniform resolution.
A method of controlling an array of light emitters and a mirror configured to reflect light from the light emitters towards an image plane, the method comprising:
- sweeping the mirror through a range of angles,
- selectively enabling one or more of the light emitters, such selective enablement configured to cause emitted light from the light emitters to project a plurality of pixels on the image plane, the plurality of pixels spaced with a non-uniform resolution;
- and
- controlling one or more switchable diffusers, each switchable diffuser configured to cause emitted light from a light emitter to be diffracted to result in an enlarged pixel projected on the image plane.
A display device, comprising:
- an array of light emitters;
- a mirror configured to reflect light from the light emitters towards an image plane;
- one or more switchable diffusers, each switchable diffuser configured to cause emitted light from a light emitter to be diffracted to result in an enlarged pixel projected on the image plane;
- and
- a controller configured to control the array of light emitters and the mirror to:
- sweep the mirror through a range of angles,
- selectively enable one or more of the light emitters, such selective enablement configured to cause emitted light from the light emitters to project a plurality of pixels on the image plane, the plurality of pixels spaced with a non-uniform resolution, and
- selectively switch the one or more switchable diffusers to selectively enlarge pixels in regions of pixels spaced with a relatively lower resolution.
Dependencies are inferred from the claim text.