WO2022114342A1 - Procédé et système de production d'hologramme pour écran numérique à grande vitesse - Google Patents

Procédé et système de production d'hologramme pour écran numérique à grande vitesse Download PDF

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Publication number
WO2022114342A1
WO2022114342A1 PCT/KR2020/017574 KR2020017574W WO2022114342A1 WO 2022114342 A1 WO2022114342 A1 WO 2022114342A1 KR 2020017574 W KR2020017574 W KR 2020017574W WO 2022114342 A1 WO2022114342 A1 WO 2022114342A1
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WO
WIPO (PCT)
Prior art keywords
hologram
unit
light source
recording
vacuum
Prior art date
Application number
PCT/KR2020/017574
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English (en)
Korean (ko)
Inventor
신동학
오용석
김재홍
이정우
정종성
Original Assignee
주식회사 홀로랩
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Application filed by 주식회사 홀로랩 filed Critical 주식회사 홀로랩
Publication of WO2022114342A1 publication Critical patent/WO2022114342A1/fr

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/0443—Digital holography, i.e. recording holograms with digital recording means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2202—Reconstruction geometries or arrangements
    • G03H2001/2244—Means for detecting or recording the holobject

Definitions

  • the present invention relates to a method and system for producing a hologram for a high-speed digital screen, and more particularly, in producing a digital hologram, a digital screen additionally using a vacuum absorber to record the screen hogel constituting the hologram uniformly at high speed It relates to a method and system for producing a hologram for use.
  • the laser light source is split into two beams.
  • the object beam side enters the digital image through the spatial light modulator and enters the recording medium.
  • the reference beam is incident in the opposite direction to the object beam and is incident on the recording medium. Therefore, when the object beam and the reference beam are incident on the recording medium at the same time, a Hogel hologram that resolves to one pixel of the hologram is recorded. After one hogel is recorded, the entire hogel is recorded while moving the XY movement stage.
  • Laid-Open Patent Publication No. 10-2008-0009000 discloses an apparatus for manufacturing a replication master used to replicate a hologram carrying recorded data on a replication hologram recording medium, and emits light from a laser light source.
  • a replica master manufacturing apparatus including hologram-forming-position moving means for moving a position of a recording layer on which a hologram is formed by interference between coaxial beams.
  • Korean Patent Registration No. 10-2136552 discloses a method of replicating a transmission type holographic optical device.
  • the prior art still records the Hogel hologram by waiting until the vibration is sufficiently attenuated to stabilize the moving stage. Due to this stabilization time, the waiting time for beam exposure becomes long, which has a disadvantage in that it is difficult to manufacture a hologram at high speed.
  • An object of the present invention is to provide a method for producing a hologram for a digital screen that additionally uses a vacuum absorber to record the hogel constituting the hologram uniformly at high speed in producing a hologram for a digital screen.
  • a method for producing a hologram for a digital screen according to the present invention for solving the above-described problems includes: a light source unit of a laser light source having excellent coherence;
  • a moving recording unit comprising a high-speed XY moving stage mounted with a recording medium and recording a hologram
  • an object beam unit including a spatial filter, a lens and a spatial light modulator through one of the two beams divided from the beam irradiated from the light source unit;
  • a reference beam unit composed of a parallel beam through a spatial filter and a lens through a single beam divided from the beam irradiated from the light source unit;
  • a vacuum adsorption unit positioned between the object beam unit and the recording medium and performing vacuum bonding of the recording medium to maintain a predetermined interval and to dampen vibration;
  • control unit for controlling the spatial light modulator, the vibration absorption unit, and the movement recording unit.
  • the present invention provides a method and system for producing a hologram for a high-speed digital screen for the purpose of minimizing the influence of vibrations generated from the XY moving stage when generating hologram hogels for a digital screen. There is a remarkable effect that the recording time for the entire hologram can be greatly reduced by reducing or eliminating the stage stabilization time.
  • FIG. 2 is a conceptual diagram of a method for producing a hologram for a high-speed digital screen according to the present invention
  • FIG 3 is an exemplary view of a conventional vacuum adsorber
  • FIG. 4 is a diagram of the positional relationship between the vacuum absorber and the recording medium in the present invention.
  • FIG. 5 is a conceptual diagram of a method for producing a hologram for a high-speed digital screen according to the present invention
  • FIG. 7 is an exemplary view of the optical design of the method for producing a hologram for a high-speed digital screen according to the present invention
  • FIG. 8 is an exemplary view of an image displayed on a spatial light modulator for manufacturing a hogel for a screen
  • shutter 2 vacuum chuck
  • RGB laser 5 Beam splitter
  • control unit 14 movement recorder
  • screen hogels when generating hologram hogels for digital screens, for the purpose of minimizing the influence of vibrations generated from the XY moving stage, screen hogels can be stably manufactured by additionally using a vacuum absorber, and the stage stabilization time can be reduced or It is characterized in that the recording time for the entire hologram can be greatly reduced by removing the hologram.
  • FIG. 2 is a conceptual diagram of a method for producing a high-speed digital hologram according to the present invention.
  • the digital hologram production method of the present invention comprises a high-speed XY moving stage mounted with a light source recording medium of a laser light source with excellent coherence, and a moving recording unit for recording the hologram; an object beam unit including a spatial filter, a lens and a spatial light modulator through one of the two beams divided from the beam irradiated from the light source unit; a reference beam unit composed of a parallel beam through a spatial filter and a lens through a single beam divided from the beam irradiated from the light source unit; a vacuum adsorption unit positioned between the object beam unit and the recording medium and vacuum adsorbing the recording medium to maintain a predetermined interval and reduce vibration; and a control unit for controlling the spatial light modulator, the vibration bonding unit, and the movement recording unit.
  • vacuum adsorption is used as a complete adsorption system for fixing wafers in the existing semiconductor process.
  • the vacuum adsorber solves problems such as contamination and vibration in precision machining according to the fixing of the workpiece, so that the work process can be performed safely and efficiently, and the standard surface roughness quality can be improved.
  • vibration is attenuated using a vacuum pump and a vacuum chuck.
  • the XY moving stage sufficiently attenuates the minute vibration according to the movement to record the hogel hologram to enable high-speed printing.
  • FIG. 5 is a conceptual diagram of a method for producing a hologram for a high-speed digital screen according to the present invention.
  • RGB laser light sources are gathered through optical elements such as mirrors and beam splitters to form one laser beam.
  • One RGB light source passes through the shutter and is split into two beams through a beam splitter.
  • Each of the two beams is configured so that the beams are focused on a hologram recording medium mounted on an xy stage to which a vacuum adsorber is attached. At this time, the beam collected on the recording medium creates a single hologram screen hogel.
  • FIG. 6 is an optical configuration diagram of a method for producing a hologram for a high-speed digital screen according to the present invention.
  • the conceptual diagram of FIG. 5 will be described by configuring the optical system in FIG. 6 in more detail.
  • the light source from the RGB light source passes through the shutter and is divided into a reference beam and an object beam through a beam splitter.
  • a parallel beam is produced using a mirror and a spatial filter.
  • the object beam side uses a spatial filter and a spatial light modulator (SLM) to produce a beam in the form of a spherical wave.
  • SLM spatial light modulator
  • the reference beam and the object beam meet each other in the hologram recording medium on the xy moving stage equipped with a vacuum absorber. The two beams that meet in this way create one Hogel hologram. Numerous hogels are obtained with movement of the xy movement stage.
  • FIG. 8 shows an example of an image displayed on a spatial light modulator for manufacturing a hogel for a screen.
  • An example of displaying a random pattern or displaying a white image on the spatial light modulator is shown.
  • a black mask image may be added to the image size and used.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Holo Graphy (AREA)

Abstract

La présente invention concerne un procédé de production d'un hologramme pour un écran numérique à grande vitesse, le procédé étant caractérisé en ce qu'il utilise en outre un dispositif d'aspiration sous vide afin d'enregistrer uniformément des hogels d'écran, qui constituent un hologramme, à grande vitesse, dans la production de l'hologramme numérique. La présente invention concerne également un système d'hologramme, pour un écran numérique à grande vitesse, comprenant : une partie source de lumière ayant une source de lumière laser ; une unité d'enregistrement mobile ayant un étage de déplacement XY à grande vitesse sur lequel un support d'enregistrement est monté, et permettant d'enregistrer un hologramme ; une unité de faisceau d'objet comprenant un filtre spatial, une lentille et un modulateur spatial de lumière à travers lequel passe un faisceau parmi deux faisceaux qui sont divisés à partir d'un faisceau irradié par l'unité de source de lumière ; une unité de faisceau de référence ayant un filtre spatial et une lentille à travers laquelle l'un des faisceaux, séparé du faisceau irradié par l'unité de source de lumière, passe et se transforme en un faisceau parallèle ; une unité d'aspiration sous vide positionnée entre l'unité de faisceau d'objet et le support d'enregistrement, et maintenant une distance fixe et atténuant les vibrations par aspiration sous vide du support d'enregistrement au moyen d'un dispositif d'aspiration sous vide ; et une unité de commande permettant de commander le modulateur spatial de lumière, l'unité d'aspiration sous vide et l'unité d'enregistrement mobile. Par conséquent, la présente invention peut produire de manière stable des hogels pour un écran à l'aide, en outre, du dispositif d'aspiration sous vide de façon à réduire au minimum l'impact de la vibration provoquée par l'étage de déplacement XY pendant la production d'hogels d'hologramme pour un écran numérique, et peut réduire considérablement le temps d'enregistrement d'hologramme global en réduisant ou en éliminant le temps de stabilisation d'étage.
PCT/KR2020/017574 2020-11-30 2020-12-03 Procédé et système de production d'hologramme pour écran numérique à grande vitesse WO2022114342A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200163567A KR20220075475A (ko) 2020-11-30 2020-11-30 고속 디지털 스크린용 홀로그램 제작 방법 및 시스템
KR10-2020-0163567 2020-11-30

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001100624A (ja) * 1999-07-26 2001-04-13 Dainippon Printing Co Ltd ホログラム複製用多面付け原版及びその作製方法
JP2001236002A (ja) * 1999-12-17 2001-08-31 Japan Science & Technology Corp ホログラムの製造方法および装置
US6631016B1 (en) * 2001-07-18 2003-10-07 Zebra Imaging, Inc. Full-parallax holographic stereograms on curved substrates
US20070285753A1 (en) * 2003-10-10 2007-12-13 Qiang Huang Systems and Methods for Producing Wide Field-of-View Holographic Displays
US20170085867A1 (en) * 2015-09-17 2017-03-23 Lumii, Inc. Multi-view displays and associated systems and methods

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001100624A (ja) * 1999-07-26 2001-04-13 Dainippon Printing Co Ltd ホログラム複製用多面付け原版及びその作製方法
JP2001236002A (ja) * 1999-12-17 2001-08-31 Japan Science & Technology Corp ホログラムの製造方法および装置
US6631016B1 (en) * 2001-07-18 2003-10-07 Zebra Imaging, Inc. Full-parallax holographic stereograms on curved substrates
US20070285753A1 (en) * 2003-10-10 2007-12-13 Qiang Huang Systems and Methods for Producing Wide Field-of-View Holographic Displays
US20170085867A1 (en) * 2015-09-17 2017-03-23 Lumii, Inc. Multi-view displays and associated systems and methods

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