[go: up one dir, main page]

WO2023107368A1 - Illuminateur à longueur focale réglable pour un écran d'affichage - Google Patents

Illuminateur à longueur focale réglable pour un écran d'affichage Download PDF

Info

Publication number
WO2023107368A1
WO2023107368A1 PCT/US2022/051805 US2022051805W WO2023107368A1 WO 2023107368 A1 WO2023107368 A1 WO 2023107368A1 US 2022051805 W US2022051805 W US 2022051805W WO 2023107368 A1 WO2023107368 A1 WO 2023107368A1
Authority
WO
WIPO (PCT)
Prior art keywords
array
light
color
slab
illuminating
Prior art date
Application number
PCT/US2022/051805
Other languages
English (en)
Inventor
Jacques Gollier
Maxwell Parsons
Babak AMIRSOLAIMANI
Wanli Chi
Daniel Guenther Greif
Renate Eva Klementine Landig
Xiayu FENG
Zhimin Shi
Nicholas John Diorio
Yang Yang
Sihui He
Giuseppe Calafiore
Fenglin Peng
Andrew John Ouderkirk
Tanya Malhotra
Sheng Ye
Christopher Yuan Ting Liao
Jonathan Robert Peterson
Nagi Hosni Elabbasi
Matthew James Hancock
Original Assignee
Meta Platforms Technologies, Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US17/699,012 external-priority patent/US20230176274A1/en
Application filed by Meta Platforms Technologies, Llc filed Critical Meta Platforms Technologies, Llc
Publication of WO2023107368A1 publication Critical patent/WO2023107368A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0172—Head mounted characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0138—Head-up displays characterised by optical features comprising image capture systems, e.g. camera
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/014—Head-up displays characterised by optical features comprising information/image processing systems

Definitions

  • Visual displays provide information to viewer(s) including still images, video, data, etc. Visual displays have applications in diverse fields including entertainment, education, engineering, science, professional training, advertising, to name just a few examples. Some visual displays such as TV sets display images to several users, and some visual display systems such s near-eye displays (NEDs) are intended for individual users.
  • NEDs near-eye displays
  • the display apparatus further comprising a controller operably coupled to the multi-color light source and the tunable microlens array and configured to: operate the multi-color light source to provide the illuminating light in a color- sequential manner; and tune the tunable microlens array to adjust the distance depending on a current color channel of the illuminating light.
  • the in-coupler comprises a tiltable reflector for varying an angle of incidence of the illuminating light onto the slab.
  • FIGs. 4A to 4D are side cross-sectional view of a tunable microlens array of this disclosure in a color-sequential illumination configuration
  • FIG. 5 is a side cross-sectional view of a microlens array with a tunable liquid crystal (LC) layer;
  • FIG. 11 is a three-dimensional view of a head-mounted display (HMD) of this disclosure.
  • the illuminator may further include a multi-color light source for providing the illuminating light of a color channel of a plurality of color channels, and an in-coupler for in-coupling the illuminating light into the slab.
  • the in-coupler may be configured to in- couple different color channels of the plurality of color channels at different angles, whereby a lateral position of light spots of the array of light spots depends on the color channel of the illuminating light.
  • the tunable microlens array may include at least one of: a liquid crystal layer with a variable liquid crystal orientation; a tunable liquid crystal microlens array; an array of switchable Pancharatnam-Berry phase microlenses; etc.
  • FIG. 2 The Talbot effect that reproduces the optical power density distribution at a higher plane spaced apart from the original plane of a peaky optical power density distribution is illustrated in FIG. 2.
  • This figure shows a map 200 of optical power density through the substrate 122 of the display panel 102, with horizontal axis (i.e. X-axis in FIG. 2) representing a lateral coordinate on the tunable microlens array 118, and a vertical axis (i.e. Z-axis in FIG. 2) representing the thickness dimension of the substrate 122 of the display panel 102.
  • the tunable microlens array 118 may be configured to form the array of light spots 120 at a focal plane 202 disposed some 0.09mm into the substrate 122.
  • a display apparatus 850 is a non-limiting illustrative embodiment of application of an illuminator of this disclosure in a visual display.
  • the display apparatus 850 includes the display panel 102 having the array of pixels 124 defined by the black grid 130 and supported by the substrate 122, and an illuminator 800 coupled to the display panel 102 for illuminating the array of pixels 124 through the substrate 122.
  • the front body 1102 includes locators 1108 and an inertial measurement unit (IMU) 1110 for tracking acceleration of the HMD 1100, and position sensors 1112 for tracking position of the HMD 1100.
  • the IMU 1110 is an electronic device that generates data indicating a position of the HMD 1100 based on measurement signals received from one or more of position sensors 1112, which generate one or more measurement signals in response to motion of the HMD 1100.
  • position sensors 1112 include: one or more accelerometers, one or more gyroscopes, one or more magnetometers, another suitable type of sensor that detects motion, a type of sensor used for error correction of the IMU 1110, or some combination thereof.
  • the position sensors 1112 may be located external to the IMU 1110, internal to the IMU 1110, or some combination thereof.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

L'invention concerne un illuminateur pour un écran d'affichage comprenant une plaque de matériau transparent pour propager une lumière d'éclairage entre des surfaces externes de la plaque, un découpleur supporté par la plaque pour découpler des parties de la lumière d'éclairage le long de l'une des surfaces externes de la plaque, et un réseau de microlentilles accordable pour former un réseau de points lumineux à partir des parties de lumière d'éclairage découplées à l'extérieur en aval de l'élément de focalisation pour éclairer des pixels de l'écran d'affichage. Le réseau de points lumineux peut être répété à une certaine distance du réseau de microlentilles accordable en raison de l'effet Talbot. L'écran d'affichage peut être éclairé de manière séquentielle en couleur, et le réseau de microlentilles accordable peut être utilisé pour ajuster la position du plan focal pour chaque canal de couleur individuellement.
PCT/US2022/051805 2021-12-06 2022-12-05 Illuminateur à longueur focale réglable pour un écran d'affichage WO2023107368A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US202163286230P 2021-12-06 2021-12-06
US202163286381P 2021-12-06 2021-12-06
US63/286,381 2021-12-06
US63/286,230 2021-12-06
US17/699,012 US20230176274A1 (en) 2021-12-06 2022-03-18 Adjustable focal length illuminator for a display panel
US17/699,012 2022-03-18

Publications (1)

Publication Number Publication Date
WO2023107368A1 true WO2023107368A1 (fr) 2023-06-15

Family

ID=85036300

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2022/051805 WO2023107368A1 (fr) 2021-12-06 2022-12-05 Illuminateur à longueur focale réglable pour un écran d'affichage

Country Status (2)

Country Link
TW (1) TW202344891A (fr)
WO (1) WO2023107368A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10108014B2 (en) * 2017-01-10 2018-10-23 Microsoft Technology Licensing, Llc Waveguide display with multiple focal depths
KR20180135646A (ko) * 2017-06-13 2018-12-21 한국전자통신연구원 광학 투시 기반의 합성 이미지 제공 방법 및 이를 위한 장치
CN113075793A (zh) * 2021-04-06 2021-07-06 业成科技（成都）有限公司 显示装置及其操作方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10108014B2 (en) * 2017-01-10 2018-10-23 Microsoft Technology Licensing, Llc Waveguide display with multiple focal depths
KR20180135646A (ko) * 2017-06-13 2018-12-21 한국전자통신연구원 광학 투시 기반의 합성 이미지 제공 방법 및 이를 위한 장치
CN113075793A (zh) * 2021-04-06 2021-07-06 业成科技（成都）有限公司 显示装置及其操作方法

Also Published As

Publication number Publication date
TW202344891A (zh) 2023-11-16

Similar Documents

Publication Publication Date Title
US20230176274A1 (en) Adjustable focal length illuminator for a display panel
EP3420414A2 (fr) Dispositif d'affichage holographique
US11852836B2 (en) Directional illuminator and display device with pupil steering by tiltable reflector
US12259553B2 (en) Geometrical waveguide illuminator and display based thereon
US20220163816A1 (en) Display apparatus for rendering three-dimensional image and method therefor
US11555962B1 (en) Waveguide illuminator with optical interference mitigation
WO2022120253A1 (fr) Dispositif d'affichage avec illuminateur transparent
US20230367073A1 (en) Waveguide with tunable bulk reflectors
US20230176378A1 (en) Lightguides with tunable gratings for dynamically variable field-of-view
EP4370827A1 (fr) Dispositif d'affichage à illuminateur talbot à base de guide d'ondes
US12204107B2 (en) Patterned light illuminator for a display panel
US11619774B2 (en) Talbot pattern illuminator and display based thereon
US11822086B2 (en) Lightguide based illuminator for reflective display panel
US11740471B2 (en) Display device with transparent illuminator
EP4463725A1 (fr) Élément optique transmissif basé sur des réseaux volumétriques réfléchissants
WO2023107368A1 (fr) Illuminateur à longueur focale réglable pour un écran d'affichage
WO2023287604A1 (fr) Illuminateur à réseau de guides d'ondes avec atténuation de la diffusion de la lumière
CN118043589A (zh) 几何波导照明器和基于该几何波导照明器的显示器
US11709411B2 (en) Display with image light steering
EP4409199A1 (fr) Illuminateur à guide d'ondes géométrique et afficheur basé sur celui-ci
WO2023137066A1 (fr) Élément optique transmissif basé sur des réseaux volumétriques réfléchissants
WO2023107370A1 (fr) Guides de lumière à réseaux accordables pour champ de vision variable de façon dynamique
WO2023287605A1 (fr) Illuminateur de guide d'ondes à atténuation d'interférence optique
WO2023220282A1 (fr) Guide d'ondes à réflecteurs en vrac accordables

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22847170

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22847170

Country of ref document: EP

Kind code of ref document: A1