Systems, devices, and methods for eyebox expansion in wearable heads-up displays
AssigneeGoogle Inc.
InventorsJackie Lynn Mills, Shreyas Potnis, Timothy Paul Bodiya
Life of this patent
Estimating the term…
Abstract
Systems, devices, and methods for expanding the eyebox of a wearable heads-up display are described. A light guide with an expanded eyebox includes a light guide material, an in-coupler, an outcoupler, and a gradient refractive index (GRIN) material. The in-coupler and the out-coupler may comprise a GRIN material. An eyeglass lens with expanded eyebox includes a light guide with expanded eyebox. A wearable heads-up display includes an eyeglass lens including a light guide with an expanded eyebox.
Claims19
A light guide comprising:
- a light guide material;
- a gradient refractive index (GRIN) material carried by the light guide material;
- an in-coupler;
- an out-coupler;
- and
- an exit pupil expander hologram disposed between the in-coupler and the out-coupler,
- wherein the exit pupil expander hologram is recorded in the GRIN material.
A lens for use in a wearable heads-up display, the lens comprising:
- a lens material;
- and a light guide integrated with the lens material, the light guide comprising:
- a light guide material;
- a gradient refractive index (GRIN) material carried by the light guide material;
- an in-coupler;
- an out-coupler;
- and an exit pupil expander hologram disposed between the in-coupler and the out-coupler, wherein the exit pupil expander hologram is recorded in the GRIN material.
A wearable heads-up display (WHUD) comprising:
- a support structure;
- a light engine carried by the support structure;
- and a transparent combiner positioned and oriented to appear in a field of view of an eye of a user when the support structure is worn on a head of the user, the transparent combiner comprising:
- a lens;
- and a light guide integrated with the lens, the light guide comprising:
- a light guide material;
- a gradient refractive index (GRIN) material carried by the light guide material;
- an in-coupler;
- an out-coupler;
- and an exit pupil expander hologram disposed between the in-coupler and the out-coupler, wherein the exit pupil expander hologram is recorded in the GRIN material.
Dependencies are inferred from the claim text.