Systems and methods of reducing temperature gradients in optical waveguides
AssigneeMicrosoft Technology Licensing, LLC
InventorsDawson Yee, Lucas Warren Schmidt
Life of this patent
Estimating the term…
Abstract
A system for displaying visual information to a user includes a waveguide and a thermal management device. The waveguide has a front surface, a rear surface, and a dual expansion grating area to guide light through the waveguide. The thermal management device is positioned at least partially overlapping the dual expansion grating area and in thermal communication with the dual expansion area.
Claims20
A system for displaying visual information to a user, the system including:
- a waveguide having a front surface, a rear surface, and a dual expansion grating area having a dual expansion grating;
- and
- a thermal management device positioned at least partially overlapping the dual expansion grating area and in thermal communication with the dual expansion grating area and the thermal management device not contacting the dual expansion grating area.
A system for displaying visual information to a user, the system including:
- a head-mounted display frame;
- a waveguide supported by the head-mounted display frame, the waveguide having a front surface, a back surface, and a dual expansion grating area having a dual expansion grating;
- a display engine in optical communication with the waveguide and configured to communicate a display light into the dual expansion grating area of the waveguide;
- and
- a heat spreader positioned at least partially overlapping the dual expansion grating area, in thermal communication with the dual expansion grating area and not contacting the dual expansion grating area.
A method of displaying visual information to a user, the method including:
- communicating a display light into a waveguide having a dual expansion grating area having a dual expansion grating;
- changing a first temperature of a first portion of the dual expansion grating area;
- inducing a thermal gradient such that a second portion of the dual expansion grating area has a second temperature that is different from the first temperature;
- and
- reducing the thermal gradient of the first temperature of the first portion and the second temperature of the second portion.
Dependencies are inferred from the claim text.