Back to results
US 2022/0075196 A1Published application
Diffractive Projection Apparatus
AssigneesDigiLens Inc., Rockwell Collins, Inc.
InventorsJonathan David Waldern, Milan Momcilo Popovich
Life of this patent
Estimating the term…
Abstract
A light projection apparatus is provided comprising: a source of light; a switchable grating on a first substrate; and a diffractive optical element. Light is diffracted at least once by the switchable grating and is diffracted at least once by the DOE.
Claims22
A waveguide display comprising:
- a light source configured to provide first wavelength amplitude-modulated collimated light in a multiplicity of directions across a field of view (FOV);
- a waveguide supporting:
- a coupler configured to couple light into total internal reflection (TIR) paths in said waveguide;
- at least one switchable grating;
- at least one non-switching grating;
- and
- at least one grating configured to extract light from said waveguide through an exit pupil.
4 more elements
Dependencies are inferred from the claim text.