Waveguide device with uniform output illumination

JD Waldern, AJ Grant, MM Popovich - US Patent 11,513,350, 2022 - Google Patents
Various embodiments of waveguide devices are described. A debanding optic may be
incorporated into waveguide devices, which may help supply uniform output illumina tion …

Method and apparatus for providing a polarization selective holographic waveguide device

MM Popovich, JD Waldern, AJ Grant - US Patent 11,604,314, 2023 - Google Patents
(57) ABSTRACT A waveguide apparatus, comprises: disposed in at least one layer: an input
coupler; a first fold grating; a second fold grating; an output coupler; and a source of light …

Methods and apparatuses for providing a holographic waveguide display using integrated gratings

AJ Grant, JD Waldern, MM Popovich, S He… - US Patent …, 2023 - Google Patents
Systems and methods for providing holographic waveguide display using integrated
gratings in accordance with various embodiments of the invention are illustrated. One …

Environmentally isolated waveguide display

MM Popovich, JD Waldern, AJ Grant - US Patent 11,726,329, 2023 - Google Patents
A waveguide display is provided comprising: an input image generator providing image light
projected over a field of view; a waveguide having first and second external surfaces; and at …

Apparatus for providing waveguide displays with two-dimensional pupil expansion

MM Popovich, JD Waldern, AJ Grant - US Patent 11,754,842, 2023 - Google Patents
An optical display comprises: a first waveguide comprising a first surface and a second
surface, an input coupler, a fold grating, and an output grating. The input coupler receives …

Wearable heads up displays

JD Waldern, MM Popovich, AJ Grant - US Patent 11,586,046, 2023 - Google Patents
US11586046B2 - Wearable heads up displays - Google Patents US11586046B2 -
Wearable heads up displays - Google Patents Wearable heads up displays Download PDF …

Method and apparatus for generating input images for holographic waveguide displays

MM Popovich, JD Waldern, AJ Grant - US Patent 11,726,323, 2023 - Google Patents
An image generation device includes: a spatial light modulator; a source of light; a beam
deflector; an illumination waveguide and an image transport waveguide, each waveguide …

Waveguide grating device

JD Waldern, AJ Grant, MM Popovich… - US Patent …, 2023 - Google Patents
An optical waveguide comprises at least two TIR surface and contains a grating. Input TIR
light with a first angular range along a first propagation direction undergoes at least two …

Waveguide laser illuminator incorporating a despeckler

MM Popovich, JD Waldern, AJ Grant - US Patent 11,709,373, 2023 - Google Patents
There is provided an illumination device comprising: a laser; a waveguide comprising at
least first and second transparent lamina; a first grating device for coupling light from the …

Evacuated gratings and methods of manufacturing

JD Waldern, AJ Grant, MM Popovich… - US Patent …, 2024 - Google Patents
Improvements to gratings for use in waveguides and methods of producing them are
described herein. Deep surface relief gratings (SRGs) may offer many advantages over …