WO2022085437A1 - Dispositif d'affichage d'image stéréoscopique et procédé d'affichage d'image stéréoscopique - Google Patents

Dispositif d'affichage d'image stéréoscopique et procédé d'affichage d'image stéréoscopique Download PDF

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Publication number
WO2022085437A1
WO2022085437A1 PCT/JP2021/036822 JP2021036822W WO2022085437A1 WO 2022085437 A1 WO2022085437 A1 WO 2022085437A1 JP 2021036822 W JP2021036822 W JP 2021036822W WO 2022085437 A1 WO2022085437 A1 WO 2022085437A1
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Prior art keywords
light
imaging means
optical imaging
real image
image display
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PCT/JP2021/036822
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English (en)
Japanese (ja)
Inventor
誠 大坪
Original Assignee
株式会社アスカネット
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Priority to JP2022557391A priority Critical patent/JPWO2022085437A1/ja
Publication of WO2022085437A1 publication Critical patent/WO2022085437A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/02—Catoptric systems, e.g. image erecting and reversing system
    • G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
    • 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
    • G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
    • G02B30/56—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels by projecting aerial or floating images
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/608—Fluid screens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/24—Stereoscopic photography by simultaneous viewing using apertured or refractive resolving means on screens or between screen and eye
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/346—Image reproducers using prisms or semi-transparent mirrors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/363—Image reproducers using image projection screens

Definitions

  • the light reflecting surface portions are orthogonal to each other in a plan view of the light input side and the light emitting side optical control panels having a large number of light reflecting surface portions (layers serving as mirror surfaces) arranged vertically parallel to one surface.
  • the present invention relates to a stereoscopic image display device and a stereoscopic image display method using optical imaging means configured so as to face each other.
  • an optical imaging apparatus (optical imaging means) using an optical control panel described in Patent Document 1.
  • an optical control panel on the incoming light side and an outgoing light side formed by arranging a large number of strip-shaped light reflecting surface portions at a constant pitch perpendicular to one surface of the transparent flat plate inside the transparent flat plate.
  • the optical imaging device is configured so that the light reflecting surface portions face each other so as to be orthogonal to each other in a plan view.
  • an object on one side of the optical imaging device can be formed as a real image on the other side of the optical imaging device.
  • the real image formed on the other side of the optical imaging device is formed by the image formation of light, it can be visually recognized only from the optical axis direction, and can be visually recognized from other directions (for example, all directions).
  • other directions for example, all directions.
  • the present invention has been made in view of such circumstances, and provides a stereoscopic image display device and a stereoscopic image display method in which a real image formed by an optical imaging means can be visually recognized not only in the optical axis direction but also in other directions.
  • the purpose is to do.
  • the three-dimensional image display device is formed by arranging a large number of strip-shaped light reflecting surface portions vertically on one side of the transparent flat plate at a constant pitch inside each transparent flat plate.
  • the optical control panels on the light side and the light emission side are configured so that the light reflecting surface portion of the light input side optical control panel and the light reflecting surface portion of the light emitting side optical control panel face each other so as to be orthogonal to each other in a plan view.
  • a stereoscopic image display device that forms an object on one side of the optical imaging means as a real image on the other side of the optical imaging means by using the optical imaging means.
  • powdery, flake, liquid, and mist-like diffuse reflectors powdery, flake, liquid, and mist-like diffuse reflectors (powder-like diffuser, flake-like diffuser, liquid diffuser, and mist-like diffuser: the same applies hereinafter. ), And a reflector generation source that causes an image body having light reflectivity to appear is provided.
  • the thickness of the image body has at least the thickness of the real image.
  • the three-dimensional image display device according to the second invention according to the above object is formed by arranging a large number of strip-shaped light reflecting surface portions vertically on one surface of the transparent flat plate at a constant pitch inside each transparent flat plate.
  • the optical control panels on the light side and the light emission side are configured so that the light reflecting surface portion of the light input side optical control panel and the light reflecting surface portion of the light emitting side optical control panel face each other so as to be orthogonal to each other in a plan view.
  • a stereoscopic image display device that forms an object on one side of the optical imaging means as a real image on the other side of the optical imaging means by using the optical imaging means.
  • the object is an image displayed on a display, and a screen having light transmission and light reflection is provided at a position where the real image is formed.
  • the three-dimensional image display method according to the third invention according to the above object is to form a large number of strip-shaped light reflecting surface portions arranged at a constant pitch perpendicular to one surface of the transparent flat plate, respectively, inside the transparent flat plate.
  • the optical control panels on the light side and the light emission side are configured so that the light reflecting surface portion of the light input side optical control panel and the light reflecting surface portion of the light emitting side optical control panel face each other so as to be orthogonal to each other in a plan view.
  • an object on one side of the optical imaging means is formed as a real image on the other side of the optical imaging means.
  • an image body composed of any one or two or more of powdery, flake, liquid, and mist-like diffuse reflectors and having light reflectivity is made to appear in the image forming body.
  • the real image is formed.
  • each of the transparent flat plates is formed by arranging a large number of strip-shaped light reflecting surfaces at a constant pitch perpendicular to one surface of the transparent flat plate.
  • the optical control panels on the light side and the light emission side are configured so that the light reflecting surface portion of the light input side optical control panel and the light reflecting surface portion of the light emitting side optical control panel face each other so as to be orthogonal to each other in a plan view.
  • a stereoscopic image display method in which an object on one side of the optical imaging means is formed as a real image on the other side of the optical imaging means. The object is an image displayed on a display, and the real image is displayed on a light-transmitting and light-reflecting screen provided at a position where the real image is formed.
  • the three-dimensional image display device and the three-dimensional image display method according to the first and third inventions have a powdery, flake, liquid, and mist-like diffuse reflector at a position where a real image is formed by an optical imaging means. Since an image body composed of any one or two or more and having light reflectivity appears, a real image can be formed in the image body.
  • the three-dimensional image display device and the three-dimensional image display method according to the second and fourth inventions are images in which an object is displayed on a display, and light transmission is performed at a position where a real image is formed by an optical imaging means. Since a screen having light reflectivity is provided, a real image can be formed on this screen. Therefore, the real image formed on the other side of the optical imaging means can be visually recognized not only from the optical axis direction but also from other directions.
  • the stereoscopic image display device 10 is an optical imaging means.
  • the object 12 on one side of 11 (lower side in FIGS. 1, 2 (A), 2 (B)) is on the upper side in the other side (FIG. 1, FIG. 2 (A), (B)) of the optical imaging means 11.
  • Is a device formed as a real image 13 and the real image 13 formed by using the real image 13 can be visually recognized not only from the optical axis direction but also from other directions (for example, all directions).
  • other directions for example, all directions
  • the optical imaging means 11 is a first and second optical control panel that is a pair of squares (rectangles, regular polygons (the number of sides is an even number), circles, ellipses, etc.) in a plan view, respectively. Although it has 14 and 15 (also referred to as parallel light reflection panels), since the first and second optical control panels 14 and 15 have the same basic shape, the same components are given the same number.
  • the first optical control panel 14 is on the lower side (light entry side) and the second optical control panel 15 is on the upper side (light emission side), respectively. It is arranged.
  • the first optical control panel 14 (the same applies to the second optical control panel 15) has a transparent flat plate 16 inside the transparent flat plate 16.
  • a large number of strip-shaped light-reflecting surface portions (light-reflecting layer, vertical light-reflecting layer, mirror) 17 are formed vertically on both sides (front-back surface: may be one side surface) of 16 and arranged in parallel at a constant pitch.
  • the transparent flat plate 16 is formed by stacking a large number of transparent glass plates 18 having a rectangular cross section, and a light reflecting surface portion 17 is formed on one side (or both sides) of each glass plate 18 in the thickness direction.
  • the first and second optical control panels can also be configured by alternately arranging a glass plate material and a transparent resin plate material having the same thickness as the glass plate material. Specifically, light-reflecting surface portions are formed on both sides in the thickness direction of each glass plate material, and adjacent (opposing) glass plate materials sandwiching the resin plate material are joined only with the resin of the resin plate material via the light-reflecting surface portion. (That is, the resin plate material not only has a function of transmitting light, but also functions as an adhesive for directly joining adjacent glass plate materials on which a light reflecting surface portion is formed).
  • the first and second optical control panels 14 and 15 have a large number of light reflecting surface portions 17 formed on the first optical control panel 14 and a large number of light reflecting surface portions 17 formed on the second optical control panel 15. In a state where they are arranged orthogonally in a plan view (for example, a state where they are cross-arranged in the range of 85 to 95 degrees, preferably 88 to 92 degrees), they are laminated facing each other, joined, integrated, and optically.
  • the image forming means 11 is configured.
  • the length of one side of the first and second optical control panels 14 and 15 in a plan view is, for example, about 100 to 2000 mm, but the length is not particularly limited.
  • a transparent adhesive for example, UV curable resin, two-component curable resin, thermosetting resin, room temperature effect resin
  • UV curable resin for example, UV curable resin
  • FIGS. 2A and 2B the upper surface of the first optical control panel 14 and the lower surface of the second optical control panel 15 are in contact with each other (there is an ultrathin adhesive). : Approximately 0 mm), but it may be arranged in close proximity with a gap (for example, about 5 mm or less). In this case, the adhesive is also filled in this gap (the gap becomes the thickness of the adhesive).
  • the synthetic resin constituting the above-mentioned adhesive (same for the resin plate material)
  • the refractive index ⁇ 2 for example, (0.9 to 1.1) ⁇ ⁇ 1), preferably (0.95 to 1.05) ⁇ ⁇ 1 which is the same as or substantially equal to the refractive index ⁇ 1 of the glass plate material 18.
  • the refractive index ⁇ 2 of the synthetic resin As a method of matching the refractive index ⁇ 2 of the synthetic resin with the refractive index ⁇ 1 of the glass plate material 18 constituting the first and second optical control panels 14 and 15, for example, two or more different resins are mixed. There is a way to adjust the refractive index. In this case, it is preferable to align the numerical values of the refractive indexes of the glass plate material and the synthetic resin from the top to the third digit (up to the second decimal place).
  • the above-mentioned synthetic resin is an ultraviolet curable type (for example, urethane (meth) acrylate, (meth) acrylate having a polyisoprene skeleton, (meth) acrylate having a polybutadiene skeleton, (meth) acrylate such as (meth) acrylate monomer), and the like. It is preferably one of a thermosetting type, a two-component curing type, and a room temperature curing type.
  • thermoplastic resins such as polymethylmethacrylate (PMMA: acrylic resin), amorphous fluororesin, cycloolefin polymer (COP), optical polycarbonate, fluorene-based polyester, and polyether sulfone can also be used.
  • PMMA polymethylmethacrylate
  • COP cycloolefin polymer
  • optical polycarbonate fluorene-based polyester
  • polyether sulfone polyether sulfone
  • the light reflecting surface portion 17 is a metal film (metal film: metal plating film or vapor deposition film) formed by performing a mirror surface treatment on one (or both) surfaces 19 of the glass plate material 18 in the thickness direction, and this metal film (light).
  • the front surface and the back surface of the reflecting surface portion 17) are light reflecting surfaces 20.
  • h1 is defined as the height of the glass plate material 18
  • h2 is defined as the height of the light reflecting surface portion 17. Then, the height h1 and the height h2 are the same (hereinafter, simply referred to as h).
  • the height h is, for example, in the range of 0.2 to 10 mm (preferably, the lower limit is 0.5 mm, further 1 mm, the upper limit is 5 mm, 3 mm, and further 2.5 mm).
  • the thickness t of the glass plate material 18 is, for example, in the range of 0.1 to 2 mm (preferably, the lower limit is 0.3 mm and the upper limit is 1.5 mm), and the length of the glass plate material 18 in the long direction is 100 to 100. It is practical that the range is 2000 mm (preferably, the upper limit is 1800 mm), but the present invention is not limited to this value.
  • the height h (corresponding to the height h1 of the glass plate material 18 or the height h2 of the light reflecting surface portion 17) with respect to the pitch p (substantially equal to the thickness t of the glass plate material 18) of the light reflecting surface portion 17 (light reflecting surface 20).
  • the aspect ratio (h / p), which is the ratio of) is preferably in the range of 0.8 to 5 (preferably, the lower limit is 1.5, further 2, the upper limit is 4, and further 3.5). As a result, a light reflecting surface portion 17 having a higher height can be obtained.
  • the thickness of the light reflecting surface portion 17 is, for example, 60 nm or more, preferably 80 nm or more (for example, about 100 nm: the upper limit is about 150 nm), which is very thin as compared with the thickness t of the glass plate material 18, but FIG. In (A) and (B), the thickness of the glass plate 18 is exaggerated for convenience of explanation.
  • Abbe number and smoothness are also important characteristics in order to obtain a high-definition image using the optical imaging means 11.
  • the Abbe number is a numerical value indicating the wavelength dependence of the refractive index, and if the Abbe number of the glass plate material 18 that transmits light is too low, the image may become unclear. Therefore, the Abbe number of the glass plate material 18 is preferably 40 or more (preferably 50 or more, more preferably 55 or more). Smoothness is particularly important on the surface on which the light-reflecting surface portion 17 is formed (the surface of the light-reflecting surface portion 17), and if the smoothness is too low, the image may appear blurry and the texture may be impaired.
  • the smoothness is preferably 50 nm or less, preferably 20 nm or less, more preferably 10 nm or less, and particularly preferably 5 nm or less (further less than 2 nm) when expressed in terms of arithmetic mean roughness “Ra”. ). Further, from the viewpoint of weight reduction, it is preferable that the glass plate material 18 has a low specific gravity.
  • the light L1, L2, and L3 from the object obliquely received from the lower left side of the optical imaging means 11 are the light of the lower first optical control panel 14, respectively. It is reflected by P1, P2, P3 of the reflecting surface 20 and further reflected by Q1, Q2, Q3 of the light reflecting surface 20 of the second light control panel 15 on the upper side, and a stereoscopic image (3D image) on the upper side of the optical imaging means 11. Real image) can be formed.
  • the light reflecting surfaces 20 of the first and second optical control panels 14 and 15 are abutted (or close to each other), so that the light from the object is collected. The degree is improved and a clearer image can be obtained.
  • the left side of the light reflecting surface portion 17 is used as the light reflecting surface 20, but when the light enters from the right side, the light is reflected.
  • the right side of the surface portion 17 is used as the light reflecting surface 20.
  • the portion other than the light reflecting surface 20 is a light passing surface.
  • an object (stereoscopic, three-dimensional object) 12 under the optical imaging means 11 is placed on the upper side of the optical imaging means 11 as a real image (stereoscopic).
  • Image) 13 can be formed.
  • the stereoscopic image display device 10 is further provided with a mist generation source (an example of a reflector generation source) 21.
  • the mist generation source 21 is composed of a mist (an example of a mist-like diffuse reflector) at a position where the real image 13 is formed, and has an image body (fog: aggregate of mists) 22 having light reflectivity and light transmission.
  • mist is manufactured from water by an ultrasonic oscillator provided in the mist generation source 21, and is ejected from a nozzle.
  • the mist is a liquid molecule (liquid fine particles) suspended in air (gas, gas) (hereinafter, the same applies).
  • the mist generation source 21 is arranged below the real image 13 to be formed, and the mist is ejected (upward) toward the real image 13, but it can also be arranged above or to the side of the real image 13.
  • the thickness of the image body 22 composed of the mist generated from the mist generation source 21 is at least the thickness of the real image 13 (thicker than the thickness of the real image 13 and the entire region including the outer peripheral surface of the real image 13). It is preferable to have it, but for example, the thickness of only the region corresponding to the outer peripheral surface of the real image 13 in a plan view may be used.
  • the mist generation source is also arranged so that the mist can be ejected to the above-mentioned region.
  • the entire real image 13 is covered with the image body 22, so that the real image 13 can be formed in the image body 22, and the real image 13 can be visually recognized not only from the optical axis direction but also from other directions. ..
  • the mist constituting the image body 22 is transparent and colorless, but may be transparent and colored.
  • the real image is formed by one or two or more of a powder-like diffuser, a flake-like diffuser, a liquid diffuser, and a mist-like diffuser at the position where the real image is formed. It is also possible to provide a reflector generation source that causes an image body having light reflectivity to appear.
  • the powdery diffuser and / or the fragmentary diffuser includes, for example, metal powder, metal foil (aluminum foil or copper foil), resin powder (plastic powder), resin piece (plastic piece), or the like. And these aggregates (imaging bodies) have light reflectivity.
  • the resin there is also a transparent resin having further light transmittance.
  • the image body composed of the liquid diffuser and / or the mist-like diffuser has light reflectivity (further, light transmission) such as gas (white smoke) caused by sublimation of dry ice. Some have sex).
  • the stereoscopic image display device 10a is a device that forms an object 12a on the lower side (one side) of the optical imaging means 11 as a real image 13a on the upper side (other side) of the optical imaging means 11.
  • the object 12a is an image displayed on the display 23, and this image becomes a real image 13a via the stereoscopic image display device 10a.
  • a fog screen (an example of a screen) 24 is provided at a position where the real image 13a is formed.
  • the fog screen 24 is, for example, an image body (aggregate of mists) having light transmission and light reflectivity formed by mist (fog: an example of a mist-like diffuse reflector), and is a real image 13a formed. It is formed by a mist generation source 25 (an example of a reflector generation source: the same configuration as the mist generation source 21) arranged below.
  • the mist generation source 25 can also be arranged above or to the side of the formed real image 13a.
  • any of a powder-like diffuser, a flake-like diffuser, a liquid diffuser, and a mist-like diffuser can be used instead of the fog screen 24.
  • another screen (imaging body) composed of one or two or more can be used. As a result, the real image 13a is displayed on the fog screen 24.
  • the present invention has been described above with reference to Examples, the present invention is not limited to the configuration described in the above-described Examples, but is within the scope of the claims. It also includes other possible examples and modifications.
  • a stereoscopic image display device and a stereoscopic image display method of the present invention are configured by combining a part or all of the above-mentioned Examples and Modifications is also included in the scope of rights of the present invention.
  • the transparent flat plate constituting the first and second optical control panels is composed of only the glass plate material or the alternately arranged glass plate material and the resin plate material has been described, but the transparency is high. It can also be composed of only a hard and high melting point resin.
  • the real image formed on the other side of the optical imaging means can be visually recognized not only from the optical axis direction but also from other directions.
  • the stereoscopic image display device can be effectively used when visually recognizing a real image displayed in the air on various devices (for example, medical devices, home electric appliances, automobiles, aircrafts, ships, etc.).
  • 10, 10a Stereoscopic image display device
  • 11 Optical imaging means
  • 12a Object
  • 13a Real image
  • 14 First optical control panel
  • 15 Second optical control panel
  • 16 Transparent Flat plate
  • 17 light reflecting surface
  • 18 glass plate
  • 19 surface
  • 20 light reflecting surface
  • 21 mist source (reflecting body source)
  • 22 image body
  • 23 display
  • 24 fog screen ( Screen)
  • 25 Mist source (reflector source)

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

Un dispositif d'affichage d'image stéréoscopique (10) et un procédé d'affichage d'image stéréoscopique sont décrits dans lesquels un objet (12) sur un côté du moyen d'imagerie optique (11) est formé en tant qu'image réelle (13) sur l'autre côté du moyen d'imagerie optique (11) à l'aide du moyen d'imagerie optique (11) dans lequel des panneaux de commande de lumière (14, 15) sur un côté d'entrée de lumière et un côté d'émission de lumière, dans lequel un grand nombre de parties de surface réfléchissante de lumière en forme de bande (17) sont agencées et formées selon un pas constant pour être perpendiculaires à une surface d'une plaque plate transparente (16) à l'intérieur de la face de plaque plate transparente (16), se font face de telle sorte que la partie de surface réfléchissante de lumière (17) du panneau de commande de lumière (14) sur le côté d'entrée de lumière et la partie de surface réfléchissante de lumière (17) du panneau de commande de lumière (15) sur le côté d'émission de lumière sont perpendiculaires l'une à l'autre dans une vue en plan. Une source de génération de réflecteur (21) qui est constituée de un ou plusieurs éléments parmi des réflecteurs irréguliers de type brume, poudre, flocon ou liquide et qui amène un corps d'image (22) ayant une réflectivité de lumière à apparaître est disposée à un emplacement de formation de l'image réelle (13), et l'image réelle (13) est formée à l'intérieur du corps d'image (22).
PCT/JP2021/036822 2020-10-20 2021-10-05 Dispositif d'affichage d'image stéréoscopique et procédé d'affichage d'image stéréoscopique WO2022085437A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0213933A (ja) * 1988-07-01 1990-01-18 Taisei Corp 映写方法及び被写体装置
WO2009136578A1 (fr) * 2008-05-09 2009-11-12 パイオニア株式会社 Appareil d'affichage d'image spatiale
WO2013179405A1 (fr) * 2012-05-30 2013-12-05 パイオニア株式会社 Procédé de fabrication d'un élément de formation d'images à plans symétriques réfléchissants, élément de formation d'images à plans symétriques réfléchissants et dispositif d'affichage d'images spatiales pourvu d'un élément de formation d'images à plans symétriques réfléchissants
JP2015121655A (ja) * 2013-12-24 2015-07-02 カシオ計算機株式会社 スクリーン形成装置、投影システム及びスクリーン形成方法
JP2017207664A (ja) * 2016-05-19 2017-11-24 日本電信電話株式会社 スクリーン形成装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0213933A (ja) * 1988-07-01 1990-01-18 Taisei Corp 映写方法及び被写体装置
WO2009136578A1 (fr) * 2008-05-09 2009-11-12 パイオニア株式会社 Appareil d'affichage d'image spatiale
WO2013179405A1 (fr) * 2012-05-30 2013-12-05 パイオニア株式会社 Procédé de fabrication d'un élément de formation d'images à plans symétriques réfléchissants, élément de formation d'images à plans symétriques réfléchissants et dispositif d'affichage d'images spatiales pourvu d'un élément de formation d'images à plans symétriques réfléchissants
JP2015121655A (ja) * 2013-12-24 2015-07-02 カシオ計算機株式会社 スクリーン形成装置、投影システム及びスクリーン形成方法
JP2017207664A (ja) * 2016-05-19 2017-11-24 日本電信電話株式会社 スクリーン形成装置

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