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1. WO2020112965 - VARIFOCAL OPTICAL ASSEMBLY AND DISPLAY DEVICE THEREWITH

Publication Number WO/2020/112965
Publication Date 04.06.2020
International Application No. PCT/US2019/063552
International Filing Date 27.11.2019
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
G02B 26/08 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
08for controlling the direction of light
G02F 1/29 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
29for the control of the position or the direction of light beams, i.e. deflection
CPC
G02B 2027/0123
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
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 2027/0187
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
0179Display position adjusting means not related to the information to be displayed
0187slaved to motion of at least a part of the body of the user, e.g. head, eye
G02B 26/0808
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
08for controlling the direction of light
0808by means of one or more diffracting elements
G02B 26/106
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
08for controlling the direction of light
10Scanning systems
106having diffraction gratings as scanning elements, e.g. holographic scanners
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
Applicants
  • FACEBOOK TECHNOLOGIES, LLC [US]/[US]
Inventors
  • JAMALI, Afsoon
  • LANMAN, Douglas, Robert
  • WHEELWRIGHT, Brian
  • LU, Lu
  • LAM, Wai Sze, Tiffany
Agents
  • MOON, William, A.
  • DANIEL, Thomas, A.
Priority Data
16/355,61215.03.2019US
62/772,59828.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) VARIFOCAL OPTICAL ASSEMBLY AND DISPLAY DEVICE THEREWITH
(FR) ENSEMBLE OPTIQUE À FOCALE VARIABLE ET DISPOSITIF D'AFFICHAGE LE COMPORTANT
Abstract
(EN)
A varifocal optical assembly includes a plurality of optical elements configured to transmit light in successive optical stages. Each respective optical stage of the successive optical stages includes at least one respective optical element of the plurality of optical elements and is configurable to be in one of a first state and a second state. The respective optical stage in the first state has a first respective optical power for light of a first polarization and a second respective optical power for light of a second polarization. The respective optical stage in the second state has a third optical power for light of the first polarization and a fourth optical power for light of the second polarization. The optical power of varifocal optical assembly is adjustable by changing the states of one or more of the successive optical stages.
(FR)
Ensemble optique à focale variable qui comprend une pluralité d'éléments optiques configurés pour transmettre de la lumière dans des étages optiques successifs. Chaque étage optique respectif des étages optiques successifs comprend au moins un élément optique respectif de la pluralité d'éléments optiques et peut être configuré pour être dans un premier état et dans un second état. L'étage optique respectif dans le premier état présente une première puissance optique respective pour la lumière d'une première polarisation et une deuxième puissance optique respective pour une lumière d'une seconde polarisation. L'étage optique respectif dans le deuxième état présente une troisième puissance optique pour la lumière de la première polarisation et une quatrième puissance optique pour la lumière de la seconde polarisation. La puissance optique de l'ensemble optique à focale variable est réglable par modification des états d'un ou de plusieurs étages optiques successifs.
Also published as
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