Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020247267 - OPTICAL ELEMENT FOR REDUCING STRAY INFRARED LIGHT

Publication Number WO/2020/247267
Publication Date 10.12.2020
International Application No. PCT/US2020/035232
International Filing Date 29.05.2020
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
G02B 27/00 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
CPC
G02B 2027/0138
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
0138comprising image capture systems, e.g. camera
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 2027/0194
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
0192Supplementary details
0194with combiner of laminated type, for optical or mechanical aspects
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 6/102
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
10of the optical waveguide type
102for infra-red and ultra-violet radiation
Applicants
  • FACEBOOK TECHNOLOGIES, LLC [US]/[US]
Inventors
  • HATZILIAS, Karol Constantine
  • ZHANG, Qi
  • LIAO, Christopher Yuan-Ting
  • SHARMA, Robin
  • OUDERKIRK, Andrew John
  • ANDREEV, Gregory Olegovic
Agents
  • MOON, William, A.
  • THOMAS, Daniel, A.
Priority Data
16/434,17507.06.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL ELEMENT FOR REDUCING STRAY INFRARED LIGHT
(FR) ÉLÉMENT OPTIQUE POUR RÉDUIRE LA LUMIÈRE INFRAROUGE PARASITE
Abstract
(EN)
An optical element for a head mounted display (HMD) includes an illumination layer, an optical combiner, and an optically transparent layer. The illumination layer is configured to emit infrared light towards an eyeward side of the optical element. The optical combiner is configured to receive reflected infrared light that is reflected by an eye of a user and to direct the reflected infrared light towards an infrared camera. The optically transparent layer is disposed between the illumination layer and the eyeward side of the optical element. The optical element may further include one or both of a confinement layer and an infrared extractor. The confinement layer is disposed on a surface of the optically transparent layer to induce waveguiding of confined infrared light propagating within the optically transparent layer. The infrared extractor is disposed on a side-edge of the optically transparent layer to absorb or frustrate the confined infrared light.
(FR)
Élément optique pour un visiocasque comprenant une couche d'éclairage, un combinateur optique et une couche optiquement transparente. La couche d'éclairage est configurée pour émettre une lumière infrarouge vers un côté œil de l'élément optique. Le combinateur optique est configuré pour recevoir une lumière infrarouge réfléchie par un œil d'un utilisateur et pour diriger la lumière infrarouge réfléchie vers une caméra infrarouge. La couche optiquement transparente est disposée entre la couche d'éclairage et le côté œil de l'élément optique. L'élément optique peut en outre comprendre une couche de confinement et/ou un extracteur infrarouge. La couche de confinement est disposée sur une surface de la couche optiquement transparente pour induire un guidage d'onde de lumière infrarouge confinée se propageant à l'intérieur de la couche optiquement transparente. L'extracteur infrarouge est disposé sur un bord latéral de la couche optiquement transparente pour absorber ou supprimer la lumière infrarouge confinée.
Also published as
Latest bibliographic data on file with the International Bureau