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1. WO2020096627 - ANGULAR SELECTIVE GRATING COUPLER FOR WAVEGUIDE DISPLAY

Publication Number WO/2020/096627
Publication Date 14.05.2020
International Application No. PCT/US2018/060265
International Filing Date 12.11.2018
IPC
G02B 27/01 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
01Head-up displays
CPC
G02B 2027/0125
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
01Head-up displays
0101characterised by optical features
0123comprising devices increasing the field of view
0125Field-of-view increase by wavefront division
G02B 2027/0174
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
01Head-up displays
017Head mounted
0172characterised by optical features
0174holographic
G02B 2027/0178
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
01Head-up displays
017Head mounted
0178Eyeglass type, eyeglass details G02C
G02B 27/0093
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
0093with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
G02B 27/0172
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
01Head-up displays
017Head mounted
0172characterised by optical features
G02B 27/4205
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
42Diffraction optics ; , i.e. systems including a diffractive element being designed for providing a diffractive effect
4205having a diffractive optical element [DOE] contributing to image formation, e.g. whereby modulation transfer function MTF or optical aberrations are relevant
Applicants
  • FACEBOOK TECHNOLOGIES, LLC [US]/[US]
Inventors
  • HUANG, Ningfeng
  • LEE, Hee Yoon
Agents
  • ROBINSON, Ross, T.
Priority Data
16/186,12009.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ANGULAR SELECTIVE GRATING COUPLER FOR WAVEGUIDE DISPLAY
(FR) COUPLEUR À RÉSEAU DE DIFFRACTION SÉLECTIF ANGULAIRE DESTINÉ À UN DISPOSITIF D'AFFICHAGE À GUIDE D'ONDES
Abstract
(EN)
An optical coupler for a waveguide-based display includes a slanted surface-relief grating that includes a plurality of regions. Different regions of the plurality of regions of the slanted surface-relief grating have different angular selectivity characteristics for incident display light. Display light for different viewing angles is diffracted by different regions of the slanted surface-relief grating.
(FR)
La présente invention porte sur un coupleur optique destiné à un dispositif d'affichage à guide d'ondes, comprenant un réseau incliné à surface en relief comportant une pluralité de régions. Différentes régions de la pluralité de régions du réseau incliné à surface en relief possèdent des caractéristiques de sélectivité angulaire différentes en ce qui concerne la lumière d'affichage incidente. La lumière d'affichage concernant différents angles de visualisation est diffractée par différentes régions du réseau incliné à surface en relief.
Also published as
Latest bibliographic data on file with the International Bureau