[go: up one dir, main page]

WO2018121010A1 - Objectif de projection et dispositif d'affichage tridimensionnel - Google Patents

Objectif de projection et dispositif d'affichage tridimensionnel Download PDF

Info

Publication number
WO2018121010A1
WO2018121010A1 PCT/CN2017/106805 CN2017106805W WO2018121010A1 WO 2018121010 A1 WO2018121010 A1 WO 2018121010A1 CN 2017106805 W CN2017106805 W CN 2017106805W WO 2018121010 A1 WO2018121010 A1 WO 2018121010A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
projection objective
light
positive lens
aspherical
Prior art date
Application number
PCT/CN2017/106805
Other languages
English (en)
Chinese (zh)
Inventor
赵改娜
浦东林
黄文彬
乔文
陈林森
Original Assignee
苏州苏大维格光电科技股份有限公司
苏州大学
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 苏州苏大维格光电科技股份有限公司, 苏州大学 filed Critical 苏州苏大维格光电科技股份有限公司
Publication of WO2018121010A1 publication Critical patent/WO2018121010A1/fr

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
    • G02B27/01—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
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images

Definitions

  • the present invention relates to the field of display device technologies, and more particularly to a projection objective lens and a three-dimensional display device.
  • Augmented Reality (AR) technology is a new technology that integrates real world information and virtual world information "seamlessly". It is an entity information (visual information, which is difficult to experience in a certain time and space of the real world. Sound, taste, touch, etc., through computer and other science and technology, simulation and then superimposition, the virtual information is applied to the real world, perceived by human senses, thus achieving a sensory experience beyond reality.
  • the real environment and virtual objects are superimposed in real time on the same picture or space.
  • the optical system of augmented reality (AR) technology is an image magnifying system.
  • the image generated by the microdisplay is magnified by the optical system to present an enlarged virtual image at a certain distance in front of the human eye, so that the user can completely immerse in the virtual situation. , not subject to interference from outside information. If a 3D video signal is input, 3D stereoscopic display can be directly realized without other auxiliary devices.
  • DMDs digital micro-mirror devices
  • LCD panels liquid crystal display panels
  • Cos chips silicon crystal chips
  • the projection system is an important part of the helmet display.
  • the projection system design not only affects the quality of the image display, but also affects the size and weight of the helmet display, as well as the comfort level of the observer, which determines the viewer's visual experience.
  • U.S. Patent No. 2014/0211322 A1 proposes a projection optical system in which the diameter of the reflective plano-convex lens 238 is large in the case of a large field of view, resulting in an increase in volume of the entire optical system. As shown in Figure 1.
  • the present invention provides a miniaturized, large field of view, high pixel projection objective and a three-dimensional display device thereof.
  • a projection objective includes a beam splitting device, a relay lens group, and a beam splitting assembly, and the beam splitting assembly includes a positive lens in an exit pupil direction.
  • the positive lens is used to collimate light.
  • the projection objective lens designed by the invention is used in combination with a DMD, LCD or LCOS display device and a corresponding illumination source to collect the reflected light beam of the display device at the exit pupil, outside the projection structure, and the subsequent converging nanolens waveguide lens.
  • the matched and constructed three-dimensional display device especially the near-eye three-dimensional display device, has the characteristics of displaying a large field of view, high image quality, and high light utilization efficiency.
  • the positive lens of the beam splitting component in the exit pupil direction is a plano-convex lens.
  • the relay lens group comprises:
  • the invention introduces a diffractive surface nanolens in an optical system, and replaces the achromatic aberration with a nano lens.
  • the double-glued lens can both achromatic and greatly reduce the weight of the system.
  • the exit pupil of the projection objective is located outside the positive lens for collimating light.
  • the relay lens group is sequentially disposed in the direction of light propagation: a first positive lens, a second positive lens, a first negative lens, a nano lens, a third positive lens, and a second negative lens.
  • the first positive lens is a convex lens whose both faces are aspherical
  • the second positive lens is a convex lens whose both faces are aspherical
  • the first negative lens has a concave surface on both faces.
  • the lens of the third positive lens is a lens having two convex surfaces
  • the second negative lens is a concave lens whose both concave surfaces are aspherical.
  • the nanolens is a lens engraved with a grating structure having a radius from a small to a large concentric shape on one or both sides.
  • the diffractive surface of the nanolens is disposed near a conjugate plane of the exit pupil of the projection objective.
  • the beam splitting component sequentially includes a light splitting prism, a reflective lens, and a positive lens for collimating light, respectively, in order from the light propagation direction.
  • the spectroscopic surface of the dichroic prism is a semi-reverse semi-transparent surface; the reflective lens is glued on the dichroic prism; the convex surface of the reflective lens is plated with a reflective film that reflects incident light back to the dichroic prism; and is used for collimating light.
  • the positive lens is glued to the face of the beam splitting prism near the exit pupil.
  • the convex surface of the reflective lens is aspherical.
  • the projection objective lens is sequentially disposed along the direction of light propagation: a light splitting device, a relay lens group, and a beam splitting component; and the relay lens group is sequentially disposed along the direction of light propagation: a first positive lens and a second positive lens a first negative lens, a nano lens, a third positive lens, and a second negative lens, wherein the first positive lens is a convex lens having aspherical surfaces on both sides, and the second positive lens is aspherical on both faces a convex lens, wherein the first negative lens is a lens having two concave surfaces, and the third positive lens is convex for both surfaces
  • the second negative lens is a concave lens in which both concave surfaces are aspherical.
  • the aspherical correction aberration and the nano-lens correction system chromatic aberration are used in the relay lens group to ensure the image quality under large field of view conditions.
  • the diffractive surface of the nanolens is disposed near the conjugate plane of the exit pupil of the projection objective.
  • the shape of the first positive lens, the second positive lens and the second negative lens containing an aspherical surface is obtained by the following polynomial:
  • the order of the beam splitting lens from the direction of light propagation includes:
  • a beam splitting prism a reflective lens, a positive lens for collimating light.
  • the spectroscopic surface of the dichroic prism is a semi-reverse semi-transparent surface; the reflective lens is glued on the dichroic prism; the convex surface of the reflective lens is plated with a reflective film that reflects incident light back to the dichroic prism; and is used for collimating light.
  • the positive lens is glued to the face of the beam splitting prism near the exit pupil.
  • the exit pupil of the projection objective is located outside of the positive lens for collimating light.
  • the projection objective of the projection objective is provided with a nano-waveguide lens.
  • the present invention also provides a three-dimensional display device comprising the projection objective lens of any of the above, and an image information generating device.
  • the image information generating device comprises a DMD, an LCD or an LCOS display device, and an illumination source.
  • FIG. 1 is a schematic structural view of a prior art
  • FIG. 2 is a schematic structural view of a projection objective lens of the present invention
  • Figure 3 is a schematic view of a nanolens
  • 4-6 are aberration curves observed for a wavelength of 459 nm, a wavelength of 525 nm, and a wavelength of 618 nm, respectively.
  • a projection objective comprises a beam splitting device, a relay lens group and a beam splitting component, wherein the beam splitting component is provided with a positive lens in a direction of exit and exit.
  • the positive lens is used to collimate light.
  • the present invention provides a positive lens in the exit pupil direction, preferably a plano-convex lens, which can greatly expand the viewing angle range.
  • the positive lens of the beam splitting component in the exit pupil direction is a plano-convex lens.
  • the relay lens group includes:
  • the nano-lens is a lens with a small to large concentric circular grating structure engraved on one or both sides, such as Figure 3 shows the addition of a nanolens. It is also possible to replace the relevant lens assembly with more nanolenses, both to correct system chromatic aberration and to greatly reduce the weight of the relay lens group.
  • the invention introduces a diffractive surface nano lens provided in the optical system, and replaces the double cemented lens for achromatic use with the nano lens, which can greatly reduce the weight of the system.
  • the projection objective lens designed by the invention is used in combination with a DMD, LCD or LCOS display device and a corresponding illumination source to collect the reflected light beam of the display device at the exit pupil, outside the projection structure, and the subsequent converging nanolens waveguide lens.
  • the matched and constructed three-dimensional display device has the characteristics of displaying a large field of view, high image quality, and high light utilization efficiency.
  • the display device 5, the spectroscopic device 1, the relay lens group 2 and the beam splitting assembly 3 are sequentially arranged in the direction of beam propagation, and the image information beam (light) is used when constructing the three-dimensional display device. It is emitted by the display device 5 (image information generating device), and after passing through the spectroscopic device 1 (generally, a dichroic prism), is concentrated by the relay lens group 2 to be imaged near the spectroscopic surface of the dichroic prism 31 of the spectroscopic component 3, and then by the spectroscopic component.
  • the spectroscopic device 1 generally, a dichroic prism
  • the selection of each parameter is determined according to requirements.
  • the display device 5 may be in various modes of DMD, LCD or LCOS, and the illumination mode of the display device 5 may be LED, OLED or laser multiple illumination modes; the light splitting device 1 may be a beam splitting prism, A variety of spectroscopic methods such as polarizing prisms or semi-reflex lens sheets.
  • the projection objective lenses are respectively disposed in the order of the direction in which the light is transmitted, including the light splitting device 1, the relay lens group 2, and the light splitting component 3; and the relay lens group 2 is sequentially disposed in the direction of the light propagation: first a positive lens 21, a second positive lens 22, a first negative lens 23, a nanolens 24, a third positive lens 25, and a second negative lens 26, wherein the first positive lens 21 is a convex lens whose both surfaces are aspherical.
  • the second positive lens 22 is a convex lens whose both faces are aspherical
  • the first negative lens 23 is a lens whose both faces are concave
  • the nano lens 24 is engraved on one side or both sides from small to small
  • the third positive lens 25 is a lens having two convex surfaces
  • the second negative lens 26 is a concave lens having two concave surfaces which are all aspherical.
  • the aspherical correction aberration and the nanolens correction system chromatic aberration are used in the relay lens group to ensure the image quality under large field of view conditions, and the use of the nanolens 24 is due to the unique negative dispersion characteristics of the nanolens 24 as a diffractive optical element.
  • the nanolens 24 provided with a diffractive surface is introduced into the optical system, and the use of the nanolens 24 instead of the double-adhesive lens for achromatic can greatly reduce the weight of the system.
  • the diffractive surface of the nanolens 24 is in the vicinity of the conjugate plane of the exit pupil, and the conjugate manner can reduce the aperture of the lens in the optical path, thereby reducing the aberration and facilitating aberration correction.
  • At least one plastic lens may be included in the relay lens assembly 2, and other lenses are made of a glass material in order to ensure good image quality.
  • the shape of the aspherical surface contained in the first positive lens 21, the second positive lens 22, and the second negative lens 26 can be obtained by the following polynomial:
  • the beam splitting assembly 3 includes a beam splitting prism 31, a reflecting lens 32, a positive lens 33 for collimating light rays, and a light splitting surface of the beam splitting prism 31.
  • the reflective lens 32 is glued to the dichroic prism 31; the convex surface of the reflective plano-convex lens 32 is aspherical, and the convex surface of the reflective lens 32 is plated with a reflective film for reflecting incident light back to the dichroic prism 31;
  • the positive lens 33 of the collimated light is glued to the surface of the dichroic prism 31 near the exit pupil.
  • the light After passing through the splitting lens assembly 3, the light is collimated and exits through the exit pupil 4, matching the subsequent nano-guided lenses.
  • the use of the retroreflective lens 32 effectively reduces the projection height in the subsequent optical path by using the reflective surface, thereby reducing the aperture of the lens, and is also advantageous for reducing aberrations.
  • the exit pupil 4 of the embodiment of the present invention is located 5 mm behind the positive lens 33, and the exit pupil size is 4 mm.
  • the exit pupil 4 is located outside the projection objective lens structure, and has the advantage of matching with the subsequent nano-waveguide lens, thereby effectively improving the utilization efficiency of the light energy. .
  • the projection objective lens of the present embodiment has aberrations, field curvatures, and distortions as shown in FIGS. 4 to 6, respectively.
  • 4 to 6 are aberration aberration curves observed for a wavelength of 459 nm, a wavelength of 525 nm, and a wavelength of 618 nm, respectively.
  • the vertical axis of the projection objective is less than 5 microns.
  • the curves T and S in Fig. 5 are the tangential fidelity curve and the sagittal field curvature characteristic curve, respectively. It can be seen that the meridional curvature value and the sagittal field curvature value are controlled within the range of (-0.25 mm, 0.25 mm), and the curve dis is the distortion characteristic curve.
  • the distortion variable is controlled at (-1%, 1%). ) within the scope. It can be seen from Fig. 6 that the full field optical transfer function MTF > 40% at a spatial frequency of 601 p/mm. It can be seen that the aberration, field curvature and distortion of the projection objective can be controlled (corrected) in a small range.
  • the projection objective of the projection objective is provided with a nano-waveguide lens.
  • the present invention also provides a three-dimensional display device comprising the projection objective lens of any of the above, and an image information generating device.
  • the image information generating device comprises a DMD, an LCD or an LCOS display device, and an illumination source.
  • the above-mentioned projection objective lens and the three-dimensional display device constructed by the same, in particular, a large field of view near-eye display device coupled with near-eye display, have the following characteristics:
  • the nanolens waveguide lens can be added to one piece, and two, three or even more pieces can be added as needed.
  • the use of the positive lens 33 advantageously reduces the aperture of the retroreflective lens 32 in the case of a large field of view, thereby reducing the overall optical path volume, and collimating the optical path using the beam splitting prism group 3, accurately, through the positive lens 33 After that, the emitted light becomes collimated light, and the collimation of the optical path is achieved.
  • the dichroic prism 31 there is an intermediate image in which the display device 5 generates an image (located at a position indicated by reference numeral 6 in Fig. 2), which facilitates reduction of the overall volume of the optical path in the case of a large field of view.
  • the projection objective is placed outside the projection objective to facilitate the matching with the subsequent nano-waveguide lens, and the expansion and optimization of the image quality by utilizing the overall optical path.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

La présente invention concerne un objectif de projection à grand champ visuel, comprenant un dispositif de division de lumière (1), un groupe de lentilles auxiliaires (2) et un ensemble de division de lumière (3). Le groupe de lentilles auxiliaires (2) comprend : un groupe de lentilles non sphériques et un élément de nano-lentille (24). Dans un système optique, l'introduction de la nano-lentille (24) pourvue d'une face de diffraction et le remplacement d'une lentille double collée par la nano-lentille (24) peuvent réduire le poids du système. Le dispositif d'affichage tridimensionnel, en particulier un dispositif d'affichage tridimensionnel proche de l'œil, qui est construit par l'utilisation combinée de l'objectif de projection avec un dispositif d'affichage DMD, LCD ou LCOS et une source de lumière d'éclairage correspondante et par collecte des faisceaux lumineux réfléchis par le dispositif d'affichage au niveau de la position d'une pupille de sortie (4), la pupille de sortie (4) se trouvant à l'extérieur d'une structure de projection et étant adpatée à une nano-lentille guide d'ondes subséquente, présente les caractéristiques d'affichage d'un grand champ visuel, d'une haute qualité d'image et d'un rendement lumineux élevé.
PCT/CN2017/106805 2016-12-30 2017-10-19 Objectif de projection et dispositif d'affichage tridimensionnel WO2018121010A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201611270017.4 2016-12-30
CN201611270017.4A CN106646885B (zh) 2016-12-30 2016-12-30 一种投影物镜及三维显示装置

Publications (1)

Publication Number Publication Date
WO2018121010A1 true WO2018121010A1 (fr) 2018-07-05

Family

ID=58838560

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/106805 WO2018121010A1 (fr) 2016-12-30 2017-10-19 Objectif de projection et dispositif d'affichage tridimensionnel

Country Status (2)

Country Link
CN (1) CN106646885B (fr)
WO (1) WO2018121010A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112764196A (zh) * 2021-01-08 2021-05-07 广景视睿科技（深圳）有限公司 一种双远心投影镜头及汽车的抬头显示装置
CN113835212A (zh) * 2021-09-30 2021-12-24 湖南华南光电(集团)有限责任公司 一种超轻型数字化瞄具光学系统
CN117031690A (zh) * 2023-08-02 2023-11-10 江苏泽景汽车电子股份有限公司 投影镜头、投影系统及抬头显示设备

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106646885B (zh) * 2016-12-30 2020-02-11 苏州苏大维格光电科技股份有限公司 一种投影物镜及三维显示装置
CN108333753A (zh) * 2017-12-29 2018-07-27 西安睿维申电子科技有限公司 一种大视场角的棱镜近眼显示光学系统
CN108873344A (zh) * 2018-07-09 2018-11-23 歌尔科技有限公司 光学系统及头戴显示设备
CN109541803B (zh) * 2019-01-23 2023-08-29 歌尔光学科技有限公司 增强现实投影系统及头戴显示设备
CN111399321B (zh) * 2020-05-08 2022-04-15 北京耐德佳显示技术有限公司 一种适用于近眼显示器的小型投影光学组件和投影光学系统
CN114089508B (zh) * 2022-01-19 2022-05-03 茂莱（南京）仪器有限公司 一种用于光波导ar镜片检测的广角投影镜头
CN114690426A (zh) * 2022-03-31 2022-07-01 上海摩软通讯技术有限公司 一种光学显示装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1290356A (zh) * 1997-10-31 2001-04-04 硅光机器公司 一种包括光栅光阀阵列和干涉光学系统和显示装置
US20040190149A1 (en) * 2003-03-25 2004-09-30 Jan-Tian Lian Image projection system and polarizing beam splitter
CN201926855U (zh) * 2011-01-30 2011-08-10 河南科技大学 一种三片式lcos激光投影显示用光学引擎
CN103852897A (zh) * 2014-03-20 2014-06-11 浙江晶景光电有限公司 基于偏振光复用的微型光学引擎系统
CN106646885A (zh) * 2016-12-30 2017-05-10 苏州苏大维格光电科技股份有限公司 一种投影物镜及三维显示装置
CN106646884A (zh) * 2016-12-30 2017-05-10 苏州苏大维格光电科技股份有限公司 一种投影物镜及三维显示装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0142825B1 (ko) * 1994-09-28 1998-10-01 이대원 광증폭 교환렌즈용 릴레이 렌즈
JPH09281414A (ja) * 1996-04-16 1997-10-31 Minolta Co Ltd ファインダー光学系
WO2004051362A2 (fr) * 2002-12-04 2004-06-17 Thomson Licensing S. A. Systeme de lentille pour un imageur vers un relais d'imageur
US8965152B2 (en) * 2008-12-12 2015-02-24 Bae Systems Plc Waveguides
US8101918B1 (en) * 2009-05-13 2012-01-24 Itt Manufacturing Enterprises, Inc. Re-imaging infrared lenses
CN102298196B (zh) * 2010-06-22 2013-10-30 上海微电子装备有限公司 一种大视场宽谱线光刻投影物镜
CN102955234B (zh) * 2011-08-22 2015-07-22 上海微电子装备有限公司 一种大视场折反射投影物镜
CN104111518B (zh) * 2014-08-04 2016-09-28 中国科学院光电技术研究所 一种大数值孔径的投影物镜光学系统
CN105824126B (zh) * 2015-01-06 2018-06-29 台达电子工业股份有限公司 光源模块及显示装置
CN104749752B (zh) * 2015-04-17 2017-10-13 张家港中贺自动化科技有限公司 一种宽视场高分辨率投影物镜
JP2016218282A (ja) * 2015-05-21 2016-12-22 国立研究開発法人産業技術総合研究所 微粒子配列の作成および配向制御方法
CN105549150B (zh) * 2016-03-04 2019-05-21 东南大学 一种全息波导显示装置
CN105898276A (zh) * 2016-05-10 2016-08-24 北京理工大学 基于非周期全息微透镜阵列的近眼三维显示系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1290356A (zh) * 1997-10-31 2001-04-04 硅光机器公司 一种包括光栅光阀阵列和干涉光学系统和显示装置
US20040190149A1 (en) * 2003-03-25 2004-09-30 Jan-Tian Lian Image projection system and polarizing beam splitter
CN201926855U (zh) * 2011-01-30 2011-08-10 河南科技大学 一种三片式lcos激光投影显示用光学引擎
CN103852897A (zh) * 2014-03-20 2014-06-11 浙江晶景光电有限公司 基于偏振光复用的微型光学引擎系统
CN106646885A (zh) * 2016-12-30 2017-05-10 苏州苏大维格光电科技股份有限公司 一种投影物镜及三维显示装置
CN106646884A (zh) * 2016-12-30 2017-05-10 苏州苏大维格光电科技股份有限公司 一种投影物镜及三维显示装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112764196A (zh) * 2021-01-08 2021-05-07 广景视睿科技（深圳）有限公司 一种双远心投影镜头及汽车的抬头显示装置
CN112764196B (zh) * 2021-01-08 2022-03-11 广景视睿科技（深圳）有限公司 一种双远心投影镜头及汽车的抬头显示装置
CN113835212A (zh) * 2021-09-30 2021-12-24 湖南华南光电(集团)有限责任公司 一种超轻型数字化瞄具光学系统
CN113835212B (zh) * 2021-09-30 2024-02-20 湖南华南光电(集团)有限责任公司 一种超轻型数字化瞄具光学系统
CN117031690A (zh) * 2023-08-02 2023-11-10 江苏泽景汽车电子股份有限公司 投影镜头、投影系统及抬头显示设备
CN117031690B (zh) * 2023-08-02 2024-04-23 江苏泽景汽车电子股份有限公司 投影镜头、投影系统及抬头显示设备

Also Published As

Publication number Publication date
CN106646885A (zh) 2017-05-10
CN106646885B (zh) 2020-02-11

Similar Documents

Publication Publication Date Title
WO2018121010A1 (fr) Objectif de projection et dispositif d'affichage tridimensionnel
US11300790B2 (en) Optical see-through free-form head-mounted display
CN108957750A (zh) 光学系统、头戴显示设备及智能眼镜
JP7157528B2 (ja) 映像表示装置
JP7406028B1 (ja) 光学系
US20240302658A1 (en) Optical module and head mount display
CN104678555B (zh) 屈光度矫正的齿形镶嵌平面波导光学器件
US9042026B2 (en) Optical system for head-mounted display
JPWO2016063418A1 (ja) 偏心光学系、及び偏心光学系を用いた画像投影装置
JP6389273B2 (ja) 短距離光拡大モジュール、眼鏡、ヘルメットおよび仮想現実システム
CN102004316A (zh) 眼镜型图像显示装置
JP2020522024A (ja) 投影対物レンズ及び導波路表示装置
JP2018523852A (ja) 光学モジュール、光学装置及びウェアラブル表示装置
JP2021144245A (ja) 投射光学系および画像投射装置
WO2021139725A1 (fr) Appareil d'affichage proche de l'œil
CN106646884B (zh) 一种投影物镜及三维显示装置
JP5415305B2 (ja) 投写光学系およびこれを用いた投写型表示装置
US12105304B2 (en) Augmented reality display device
CN117706792B (zh) 光学系统及头戴显示设备
JP2009116106A (ja) 投射用レンズおよび投射型画像表示装置
JP5411720B2 (ja) 投写光学系およびこれを用いた投写型表示装置
WO2025055836A1 (fr) Système optique et dispositif d'affichage monté sur la tête
JP2016170203A (ja) 画像表示装置
CN111999897A (zh) 一种基于体全息衍射光学的透射式平视显示器
JP2000019450A (ja) ディスプレイ装置

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: 17886160

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: 17886160

Country of ref document: EP

Kind code of ref document: A1