Upconversion-based photochromic dimming in waveguide displays
AssigneeAdeia Guides Inc.
InventorYuval Ofir
Life of this patent
Estimating the term…
Abstract
Systems, methods and apparatuses are described for dimming one or more portions of an extended reality (XR) display. Control circuitry may be configured to generate for display, at the display, an XR object. A dimmable optical element may comprise a plurality of up-converting nanoparticles and a photochromic material, and is configured to cause a change in color of at least a portion of the display. The dimmable optical element may be irradiated with light of a first energy level which causes the plurality of upconverting nanoparticles to emit light of a second energy level higher than the first energy level. The photochromic material may absorb the light of the second energy level to cause the change in color of the at least a portion of the display.
Claims23
An extended-reality (XR) device, comprising:
- a display;
- control circuitry configured to generate for display, by the display, an XR object;
- and
- a dimmable optical element, wherein:
- the dimmable optical element comprises a plurality of up-converting nanoparticles and a photochromic material, and is configured to cause a change in color of at least a portion of the display;
- the control circuitry is configured to cause the dimmable optical element to be irradiated with light of a first energy level which causes the plurality of upconverting nanoparticles to emit light of a second energy level higher than the first energy level;
- and
- the photochromic material absorbs the light of the second energy level to cause the change in color of the at least a portion of the display.
A method comprising:
- generating for display, by a display of an extended-reality (XR) device, an XR object, wherein the XR device comprises a dimmable optical element comprising a plurality of upconverting nanoparticles and a photochromic material;
- and
- causing, by the dimmable optical element, a change in color of at least a portion of the display by:
- causing the optical element to be irradiated with light of a first energy level which causes the plurality of upconverting nanoparticles to emit light of a second energy level higher than the first energy level, wherein the photochromic material absorbs the light of the second energy level to cause the change in color of the at least a portion of the display.
23-55. (canceled)
Dependencies are inferred from the claim text.