US 12,393,025 B2 · Waveguide combiners having arrangements for image uniformity

Abstract

Embodiments described herein relate to waveguide combiners having arrangements for image uniformity. The waveguide combiners includes an input coupling grating (ICG) defined by a plurality of input structures, a pupil expansion grating (PEG) defined by a plurality of expansion structures, an output coupling grating (OCG) defined by a plurality of output structures The waveguide combiners includes at least one of a pixelated phase modulator is aligned with the PEG of the first side of the waveguide combiners, at least one of a Y expander and an X expander disposed on a second side of the waveguide combiners opposing the first side, or a pupil shifting mechanism operable to shift incident beams of light between a first position and a second position of the ICG.

Claims20

Dependent claims

A waveguide combiner, comprising:

an input coupling grating (ICG) defined by a plurality of input structures;
a pupil expansion grating (PEG) defined by a plurality of expansion structures disposed over a first side of the waveguide combiner;
an output coupling grating (OCG) defined by a plurality of output structures;
and
a pixelated phase modulator disposed on a second side of the waveguide combiner opposing the first side of the waveguide combiner, the pixelated phase modulator aligned with the PEG of the first side of the waveguide combiner.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/045,663Filed 11 Oct 2022 · us provisional application

Priority

15 Oct 2021

Published

US 2023/0118998 A120 Apr 2023

Granted

19 Aug 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

G02B 27/0081
Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00: with means for altering, e.g. enlarging, the…
G02B 6/0026
Provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source: wavelength…
G02B 6/005
Means for improving the coupling-out of light from the light guide: provided by one optical element, or plurality thereof, placed on the light…
G02B 6/29353
In a light guide: with a wavelength selective element in at least one light guide interferometer arm, e.g. grating, interference filter, resonator

Waveguide combiners having arrangements for image uniformity

Life of this patent

Waveguide combiners having arrangements for image uniformity

Life of this patent

Abstract

Claims20