WO2017198713A3 - Verfahren zur erzeugung von hologrammen - Google Patents

Verfahren zur erzeugung von hologrammen Download PDF

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Publication number
WO2017198713A3
WO2017198713A3 PCT/EP2017/061846 EP2017061846W WO2017198713A3 WO 2017198713 A3 WO2017198713 A3 WO 2017198713A3 EP 2017061846 W EP2017061846 W EP 2017061846W WO 2017198713 A3 WO2017198713 A3 WO 2017198713A3
Authority
WO
WIPO (PCT)
Prior art keywords
dimensional
encoding
spatial light
light modulation
modulation device
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/EP2017/061846
Other languages
English (en)
French (fr)
Other versions
WO2017198713A2 (de
Inventor
Norbert Leister
Ralf Häussler
Gerald FÜTTERER
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.)
SeeReal Technologies SA
Original Assignee
SeeReal Technologies SA
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 SeeReal Technologies SA filed Critical SeeReal Technologies SA
Priority to JP2018560841A priority Critical patent/JP7273514B2/ja
Priority to US16/301,839 priority patent/US11397406B2/en
Priority to CN201780044491.1A priority patent/CN109564403B/zh
Priority to DE112017002514.1T priority patent/DE112017002514A5/de
Priority to KR1020187036572A priority patent/KR102481579B1/ko
Publication of WO2017198713A2 publication Critical patent/WO2017198713A2/de
Publication of WO2017198713A3 publication Critical patent/WO2017198713A3/de
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04Processes or apparatus for producing holograms
    • G03H1/08Synthesising holograms, i.e. holograms synthesized from objects or objects from holograms
    • G03H1/0808Methods of numerical synthesis, e.g. coherent ray tracing [CRT], diffraction specific
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04Processes or apparatus for producing holograms
    • G03H1/16Processes or apparatus for producing holograms using Fourier transform
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2202Reconstruction geometries or arrangements
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2294Addressing the hologram to an active spatial light modulator
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04Processes or apparatus for producing holograms
    • G03H1/08Synthesising holograms, i.e. holograms synthesized from objects or objects from holograms
    • G03H1/0808Methods of numerical synthesis, e.g. coherent ray tracing [CRT], diffraction specific
    • G03H2001/0825Numerical processing in hologram space, e.g. combination of the CGH [computer generated hologram] with a numerical optical element
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04Processes or apparatus for producing holograms
    • G03H1/08Synthesising holograms, i.e. holograms synthesized from objects or objects from holograms
    • G03H1/0808Methods of numerical synthesis, e.g. coherent ray tracing [CRT], diffraction specific
    • G03H2001/0833Look up table
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2202Reconstruction geometries or arrangements
    • G03H2001/2236Details of the viewing window
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2202Reconstruction geometries or arrangements
    • G03H2001/2236Details of the viewing window
    • G03H2001/2239Enlarging the viewing window
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2249Holobject properties
    • G03H2001/2252Location of the holobject
    • G03H2001/2255Holobject out of Fourier or hologram planes
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2210/00Object characteristics
    • G03H2210/40Synthetic representation, i.e. digital or optical object decomposition
    • G03H2210/45Representation of the decomposed object
    • G03H2210/452Representation of the decomposed object into points
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2210/00Object characteristics
    • G03H2210/40Synthetic representation, i.e. digital or optical object decomposition
    • G03H2210/45Representation of the decomposed object
    • G03H2210/454Representation of the decomposed object into planes
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2210/00Object characteristics
    • G03H2210/40Synthetic representation, i.e. digital or optical object decomposition
    • G03H2210/46Synthetic representation, i.e. digital or optical object decomposition for subsequent optical processing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Holo Graphy (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zur Erzeugung von Hologrammen zur Kodierung in einer räumlichen Lichtmodulationseinrichtung für ein holographisches Display zur Darstellung einer zwei und/oder dreidimensionalen Szene. Die zwei und/oder dreidimensionale Szene wird dabei in Objektpunkte zerlegt und in einem in Subhologramme unterteilten Hologramm in der räumlichen Lichtmodulationseinrichtung kodiert. Die Objektpunkte der Szene werden in Kodierbereichen auf der räumlichen Lichtmodulationseinrichtung kodiert. Eine Größe und/oder eine Form des Kodierbereichs wird derart im Vergleich zu einer Größe und/oder Form eines, dem Kodierbereich zugeordneten Subhologramms gewählt, dass ein Übersprechen von höheren Beugungsordnungen in einem virtuellen Sichtbarkeitsbereich verringert wird.
PCT/EP2017/061846 2016-05-18 2017-05-17 Verfahren zur erzeugung von hologrammen Ceased WO2017198713A2 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2018560841A JP7273514B2 (ja) 2016-05-18 2017-05-17 ホログラムを生成する方法
US16/301,839 US11397406B2 (en) 2016-05-18 2017-05-17 Method for producing holograms
CN201780044491.1A CN109564403B (zh) 2016-05-18 2017-05-17 用于生成全息图的方法
DE112017002514.1T DE112017002514A5 (de) 2016-05-18 2017-05-17 Verfahren zur erzeugung von hologrammen
KR1020187036572A KR102481579B1 (ko) 2016-05-18 2017-05-17 홀로그램을 생성하기 위한 방법

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP16170063.8 2016-05-18
EP16170063 2016-05-18
EP16185261 2016-08-23
EP16185261.1 2016-08-23

Publications (2)

Publication Number Publication Date
WO2017198713A2 WO2017198713A2 (de) 2017-11-23
WO2017198713A3 true WO2017198713A3 (de) 2018-01-18

Family

ID=60326401

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/061846 Ceased WO2017198713A2 (de) 2016-05-18 2017-05-17 Verfahren zur erzeugung von hologrammen

Country Status (6)

Country Link
US (1) US11397406B2 (de)
JP (1) JP7273514B2 (de)
KR (1) KR102481579B1 (de)
CN (1) CN109564403B (de)
DE (1) DE112017002514A5 (de)
WO (1) WO2017198713A2 (de)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10969740B2 (en) * 2017-06-27 2021-04-06 Nvidia Corporation System and method for near-eye light field rendering for wide field of view interactive three-dimensional computer graphics
JP2019076526A (ja) 2017-10-25 2019-05-23 テルモ株式会社 治療方法
JP2019076527A (ja) 2017-10-25 2019-05-23 テルモ株式会社 治療方法
JP2019076531A (ja) 2017-10-25 2019-05-23 テルモ株式会社 治療方法
KR102526651B1 (ko) * 2017-12-01 2023-04-27 삼성전자주식회사 영상 데이터 처리 방법 및 장치
KR20250002804A (ko) 2018-01-16 2025-01-07 퍼시픽 라이트 앤드 홀로그램 인크. 전자기 필드 컴퓨팅들을 이용한 3차원 디스플레이들
JP2022508697A (ja) * 2018-10-12 2022-01-19 ブリスライツ,エルエルシー レーザ投影装置および3d画像作成方法
DE102019201055A1 (de) * 2019-01-28 2020-07-30 Continental Automotive Gmbh Bildgebende Einheit für eine Vorrichtung zum Anzeigen eines Bildes
GB2590621B (en) * 2019-12-20 2022-05-25 Dualitas Ltd A projector for forming images on multiple planes
EP4485070A3 (de) 2020-08-20 2025-03-12 Toppan Inc. Beugungsfolie, verfahren zur herstellung davon, dreidimensionale anzeigevorrichtung, lichtstrahlwiedergabevorrichtung, dreidimensionales raumanzeigesystem, lichtstrahlwiedergabeverfahren und programm
JP7615590B2 (ja) * 2020-09-29 2025-01-17 Toppanホールディングス株式会社 光線再生装置、三次元空間表示システム、光線再生方法、及びプログラム
US11762333B2 (en) 2020-09-17 2023-09-19 Pacific Light & Hologram, Inc. Reconstructing objects with display zero order light suppression
KR102612045B1 (ko) * 2020-11-02 2023-12-12 한국전자통신연구원 디지털 홀로그램 구현 장치의 동작 방법
GB2603518B (en) * 2021-02-05 2023-02-22 Envisics Ltd Image projection
CN112862682B (zh) * 2021-02-05 2022-07-08 中国工程物理研究院激光聚变研究中心 一种多约束同轴数字全息分辨率增强方法及系统
US20250029282A1 (en) * 2021-12-06 2025-01-23 Korea Electronics Technology Institute Hologram generation and streaming method and system using multi-computers
KR102654323B1 (ko) * 2022-11-29 2024-04-04 주식회사 비브스튜디오스 버추얼 프로덕션에서 2차원 이미지의 입체화 처리를 위한 방법, 장치 및 시스템
KR102740002B1 (ko) * 2022-12-05 2024-12-06 서울대학교산학협력단 홀로그램 생성 방법 및 그 장치
GB2628534A (en) * 2023-03-24 2024-10-02 Envisics Ltd Driver for a display device
US11900842B1 (en) 2023-05-12 2024-02-13 Pacific Light & Hologram, Inc. Irregular devices
US12288490B2 (en) 2023-05-12 2025-04-29 Pacific Light & Hologram, Inc. Holographically displaying three-dimensional objects
US12266279B2 (en) 2023-05-12 2025-04-01 Pacific Light & Hologram, Inc. Holographically displaying three-dimensional objects with optical devices having in-coupling and out-coupling diffractive structures
US12236816B2 (en) 2023-05-12 2025-02-25 Pacific Light & Hologram, Inc. Holographically displaying live scenes including three-dimensional objects
US12254797B2 (en) 2023-05-12 2025-03-18 Pacific Light & Hologram, Inc. Holographically displaying live scenes including three-dimensional objects
US12272279B2 (en) 2023-05-12 2025-04-08 Pacific Light & Hologram, Inc. Holographically displaying three-dimensional objects
US12230176B2 (en) 2023-05-12 2025-02-18 Pacific Light & Hologram, Inc. Holographically displaying three-dimensional objects
US12374247B2 (en) 2023-05-12 2025-07-29 Pacific Light & Hologram, Inc. Holographically displaying live scenes including three-dimensional objects
US12243453B2 (en) 2023-05-12 2025-03-04 Pacific Light & Hologram, Inc. Holographically displaying three-dimensional objects
US12300132B2 (en) 2023-05-12 2025-05-13 Pacific Light & Hologram, Inc. Holographically displaying three-dimensional objects
US12293687B2 (en) 2023-05-12 2025-05-06 Pacific Light & Hologram, Inc. Holographically displaying live scenes including three-dimensional objects
US12254798B2 (en) 2023-05-12 2025-03-18 Pacific Light & Hologram, Inc. Holographically displaying three-dimensional objects
US12315403B2 (en) 2023-05-12 2025-05-27 Pacific Light & Hologram, Inc. Holographically displaying three-dimensional objects
US12266280B2 (en) 2023-05-12 2025-04-01 Pacific Light & Hologram, Inc. Holographically displaying three-dimensional objects
GB2630118B (en) * 2023-05-18 2025-05-07 Envisics Ltd Hologram processing
GB2630967B (en) * 2023-06-15 2025-08-27 Envisics Ltd Hologram engine
US20250155847A1 (en) * 2023-11-15 2025-05-15 Fei Company Increasing information resulting from apodization
US12281984B1 (en) 2023-12-21 2025-04-22 Pacific Light & Hologram, Inc. Optical measurements

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009112468A2 (de) * 2008-03-11 2009-09-17 Seereal Technologies S.A. Verfahren zur kodierung von computergenerierten hologrammen in pixelierten lichtmodulatoren
EP2138911A2 (de) * 2002-11-13 2009-12-30 SeeReal Technologies GmbH Einrichtung zur Rekonstruktion von Videohologrammen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997035223A1 (en) * 1996-03-15 1997-09-25 Retinal Display Cayman Limited Method of and apparatus for viewing an image
GB0329012D0 (en) * 2003-12-15 2004-01-14 Univ Cambridge Tech Hologram viewing device
DE102004044111B4 (de) * 2004-09-08 2015-05-07 Seereal Technologies Gmbh Verfahren und Vorrichtung zum Kodieren und Rekonstruieren von computergenerierten Videohologrammen
DE102004063838A1 (de) * 2004-12-23 2006-07-06 Seereal Technologies Gmbh Verfahren und Einrichtung zum Berechnen computer generierter Videohologramme
CN101512445B (zh) * 2006-09-01 2013-07-17 视瑞尔技术公司 借助亚全息图实时生成视频全息图的方法
DE102007023739B4 (de) * 2007-05-16 2018-01-04 Seereal Technologies S.A. Verfahren zum Rendern und Generieren von Farbvideohologrammen in Echtzeit und holographische Wiedergabeeinrichtung
DE102008002692B4 (de) * 2008-06-26 2019-02-21 Seereal Technologies S.A. Displayeinrichtung zur dreidimensionalen holographischen oder stereoskopischen Darstellung räumlicher Objekte und Verfahren zum Ermitteln einer Apodisationsfunktion für eine Apodisationsmaske
KR102188636B1 (ko) * 2013-11-28 2020-12-08 삼성전자주식회사 홀로그램 디스플레이를 위한 서브-홀로그램 생성 방법 및 장치

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2138911A2 (de) * 2002-11-13 2009-12-30 SeeReal Technologies GmbH Einrichtung zur Rekonstruktion von Videohologrammen
WO2009112468A2 (de) * 2008-03-11 2009-09-17 Seereal Technologies S.A. Verfahren zur kodierung von computergenerierten hologrammen in pixelierten lichtmodulatoren

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
GULES ANTONIN ET AL: "Complex modulation computer-generated hologram by a fast hybrid point-source/wave-field approach", 2015 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP), IEEE, 27 September 2015 (2015-09-27), pages 4962 - 4966, XP032827373, DOI: 10.1109/ICIP.2015.7351751 *
YANCAO ZHANG ET AL: "Improving the reconstruction quality with extension and apodization of the digital hologram", APPLIED OPTICS, OPTICAL SOCIETY OF AMERICA, WASHINGTON, DC; US, vol. 48, no. 16, 1 June 2009 (2009-06-01), pages 3070 - 3074, XP001524413, ISSN: 0003-6935, DOI: 10.1364/AO.48.003070 *
YANCAO ZHANG ET AL: "Optimization of the window function for digital hologram apodization in reconstructing the holographic image", JOURNAL OF OPTICS, INSTITUTE OF PHYSICS PUBLISHING, BRISTOL GB, vol. 15, no. 10, 19 September 2013 (2013-09-19), pages 105406, XP020251880, ISSN: 2040-8986, [retrieved on 20130919], DOI: 10.1088/2040-8978/15/10/105406 *

Also Published As

Publication number Publication date
CN109564403A (zh) 2019-04-02
CN109564403B (zh) 2021-05-28
KR20190008568A (ko) 2019-01-24
JP2019522231A (ja) 2019-08-08
DE112017002514A5 (de) 2019-04-25
WO2017198713A2 (de) 2017-11-23
KR102481579B1 (ko) 2022-12-26
JP7273514B2 (ja) 2023-05-15
US20190121291A1 (en) 2019-04-25
US11397406B2 (en) 2022-07-26

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