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AssigneeThalmic Labs Inc.
InventorsStefan Alexander, Douglas Raymond Dykaar, John Otto Vieth, Timothy Paul Bodiya
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Systems, devices, and methods for optical waveguides that are well-suited for use in wearable heads-up displays (WHUDs) are described. An optical device comprises an optical waveguide including a volume of optically transparent material having a first longitudinal surface positioned opposite a second longitudinal surface across a width of the volume, a liquid crystal in-coupler, a controller to modulate a refractive index of the liquid crystal in-coupler, and an out-coupler. Light is in-coupled into the waveguide on a path that is dependent on the modulated refractive index of the liquid crystal in-coupler and is propagated along a length of the waveguide by total internal reflection between the longitudinal surfaces before being out-coupled by the out-coupler. In this way, light signals can be steered to create an image and/or to move an exit pupil of an image. WHUDs that employ such optical waveguides are also described.
A method of operating a wearable heads-up display (WHUD) comprising a support structure that in use is worn on the head of a user, a projector with at least one light source, an optical waveguide including a volume of optically transparent material having a first longitudinal surface opposite a second longitudinal surface across a width of the volume of optically transparent material, a liquid crystal in-coupler, an out-coupler, and a controller communicatively coupled to the liquid crystal in-coupler, the method comprising:
Dependencies are inferred from the claim text.