WO2021140716A1 - 画像表示素子、画像表示装置および画像表示方法 - Google Patents

画像表示素子、画像表示装置および画像表示方法 Download PDF

Info

Publication number
WO2021140716A1
WO2021140716A1 PCT/JP2020/038160 JP2020038160W WO2021140716A1 WO 2021140716 A1 WO2021140716 A1 WO 2021140716A1 JP 2020038160 W JP2020038160 W JP 2020038160W WO 2021140716 A1 WO2021140716 A1 WO 2021140716A1
Authority
WO
WIPO (PCT)
Prior art keywords
diffraction grating
image display
incident
light
light guide
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2020/038160
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
峯邑　浩行
安齋　由美子
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi LG Data Storage Inc
Original Assignee
Hitachi LG Data Storage Inc
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
Application filed by Hitachi LG Data Storage Inc filed Critical Hitachi LG Data Storage Inc
Priority to CN202080089130.0A priority Critical patent/CN114846387B/zh
Priority to US17/785,102 priority patent/US20230028757A1/en
Publication of WO2021140716A1 publication Critical patent/WO2021140716A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • G02B27/0081—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. enlarging, the entrance or exit pupil
    • 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
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/4272—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having plural diffractive elements positioned sequentially along the optical path
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1842—Gratings for image generation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1861—Reflection gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T19/00—Manipulating three-dimensional [3D] models or images for computer graphics
    • G06T19/006—Mixed reality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • 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
    • G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
    • 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
    • G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
    • G02B2027/0125—Field-of-view increase by wavefront division
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1847—Manufacturing methods
    • G02B5/1852—Manufacturing methods using mechanical means, e.g. ruling with diamond tool, moulding
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1866—Transmission gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials
    • G02B5/1871—Transmissive phase gratings

Definitions

  • the light guide plate is composed of a plurality of uneven diffraction gratings formed on a glass substrate.
  • the light beam emitted from the projector is coupled to the light guide plate by an incident diffraction grating and propagates inside the light guide plate while being totally reflected.
  • the light beam is totally reflected and propagated in the light guide plate while being converted into a plurality of light rays duplicated by yet another diffraction grating, and finally emitted from the light guide plate.
  • a part of the emitted light rays is imaged on the retina through the user's pupil and recognized as an augmented reality image superimposed on the image in the real world.
  • the function of the light guide plate is to guide the light rays emitted from the projector while replicating them in multiple ways so that the user can recognize the multiple light rays emitted as image information equivalent to the original image.
  • the duplicated ray group has a wave number vector equivalent to the ray having the image information emitted from the projector, and has a spatial spread.
  • a part of the duplicated ray group enters the pupil and is visually recognized by being imaged on the retina together with the information of the outside world, and can provide the user with information of augmented reality in addition to the information of the outside world.
  • the light rays are duplicated and spatially spread and emitted. Therefore, the larger the spatial spread, the smaller the visible light rays and the smaller the visible brightness.
  • the emission position visually recognized by the user changes depending on the pixel position of the original video information, it is inevitable that the brightness changes depending on the pixel position in the image display device using the light guide plate.
  • FIG. 7 is a schematic plan view of one light guide plate 100, and shows an example of the relationship between the wave number vectors of the formed incident diffraction grating 101 and the emission diffraction grating 102.
  • 100 light guide plate
  • 101 incident diffraction grating
  • 102 exit diffraction grating
  • 300 projector
  • 400 user's pupil

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Graphics (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
PCT/JP2020/038160 2020-01-10 2020-10-08 画像表示素子、画像表示装置および画像表示方法 Ceased WO2021140716A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202080089130.0A CN114846387B (zh) 2020-01-10 2020-10-08 图像显示元件、图像显示装置以及图像显示方法
US17/785,102 US20230028757A1 (en) 2020-01-10 2020-10-08 Image display element, image display device, and image display method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-002824 2020-01-10
JP2020002824A JP7341906B2 (ja) 2020-01-10 2020-01-10 画像表示素子、画像表示装置および画像表示方法

Publications (1)

Publication Number Publication Date
WO2021140716A1 true WO2021140716A1 (ja) 2021-07-15

Family

ID=76788156

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/038160 Ceased WO2021140716A1 (ja) 2020-01-10 2020-10-08 画像表示素子、画像表示装置および画像表示方法

Country Status (5)

Country Link
US (1) US20230028757A1 (https=)
JP (1) JP7341906B2 (https=)
CN (1) CN114846387B (https=)
TW (1) TW202127107A (https=)
WO (1) WO2021140716A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114089476A (zh) * 2021-11-25 2022-02-25 Oppo广东移动通信有限公司 光波导镜片、制备光波导镜片的方法、增强现实设备

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7465826B2 (ja) * 2021-02-02 2024-04-11 株式会社日立エルジーデータストレージ 導光板、導光板モジュールおよび画像表示装置
CN115685573B (zh) * 2022-11-07 2026-02-06 湖北长江新型显示产业创新中心有限公司 一种场镜、显示装置及电子设备
CN115951438B (zh) * 2022-12-30 2026-03-31 上海天马微电子有限公司 场镜和显示装置
CN119224912A (zh) * 2023-06-29 2024-12-31 歌尔光学科技(上海)有限公司 导光器件、光学模组以及头戴显示设备
TWI880517B (zh) * 2023-12-12 2025-04-11 國立中央大學 混合實境顯示裝置
CN120871331B (zh) * 2025-09-26 2026-03-27 歌尔股份有限公司 光波导结构、光学模组及智能眼镜

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006065312A (ja) * 2004-07-26 2006-03-09 Nippon Sheet Glass Co Ltd 透過型回折光学素子
US20100277803A1 (en) * 2006-12-14 2010-11-04 Nokia Corporation Display Device Having Two Operating Modes
US20150293357A1 (en) * 2012-10-18 2015-10-15 Lg Electronics Inc. Optical device
JP2017156388A (ja) * 2016-02-29 2017-09-07 セイコーエプソン株式会社 光束径拡大素子及び画像表示装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3623250B2 (ja) * 1993-06-23 2005-02-23 オリンパス株式会社 映像表示装置
WO2004097819A1 (ja) * 2003-04-25 2004-11-11 Matsushita Electric Industrial Co. Ltd. 光回折素子および光情報処理装置
JP2005135899A (ja) * 2003-10-06 2005-05-26 Omron Corp 面光源装置及び表示装置
JP4163729B2 (ja) * 2006-10-03 2008-10-08 株式会社東芝 磁気記録媒体、その製造方法、および磁気記録装置
CN102472847B (zh) * 2009-07-16 2014-03-12 吉坤日矿日石能源株式会社 衍射光栅、使用该衍射光栅的有机el元件及其制造方法
JP5680742B2 (ja) * 2011-03-28 2015-03-04 Ｊｘ日鉱日石エネルギー株式会社 凹凸構造を有する基板の製造方法及びそれを用いた有機ｅｌ素子の製造方法
CN107113418B (zh) * 2014-12-24 2020-03-17 皇家飞利浦有限公司 自动立体显示设备
CA3066221A1 (en) * 2017-06-19 2018-12-27 Magic Leap, Inc. Dynamically actuable diffractive optical element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006065312A (ja) * 2004-07-26 2006-03-09 Nippon Sheet Glass Co Ltd 透過型回折光学素子
US20100277803A1 (en) * 2006-12-14 2010-11-04 Nokia Corporation Display Device Having Two Operating Modes
US20150293357A1 (en) * 2012-10-18 2015-10-15 Lg Electronics Inc. Optical device
JP2017156388A (ja) * 2016-02-29 2017-09-07 セイコーエプソン株式会社 光束径拡大素子及び画像表示装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114089476A (zh) * 2021-11-25 2022-02-25 Oppo广东移动通信有限公司 光波导镜片、制备光波导镜片的方法、增强现实设备

Also Published As

Publication number Publication date
JP2021110837A (ja) 2021-08-02
CN114846387B (zh) 2023-11-14
TW202127107A (zh) 2021-07-16
JP7341906B2 (ja) 2023-09-11
US20230028757A1 (en) 2023-01-26
CN114846387A (zh) 2022-08-02

Similar Documents

Publication Publication Date Title
JP7297548B2 (ja) 導光板の製造方法、導光板モジュールの製造方法、および画像表示装置の製造方法
CN111190288B (zh) 导光板及图像显示装置
JP7341906B2 (ja) 画像表示素子、画像表示装置および画像表示方法
US10459140B2 (en) Image display device
JP7341907B2 (ja) 画像表示素子および装置
EP4310576B1 (en) Diffractive optical waveguide and display device
JP7096084B2 (ja) 導光板、導光板モジュール、画像表示装置および導光板の製造方法
CN111133754B (zh) 具有相位调制层和相位补偿层的光学器件
US12306410B2 (en) Display apparatus including volume grating based combiner
CN113759550B (zh) 用于提供扩展观看窗的显示装置
JP7465826B2 (ja) 導光板、導光板モジュールおよび画像表示装置

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: 20912025

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: 20912025

Country of ref document: EP

Kind code of ref document: A1