EP1230581A1 - High definition screen - Google Patents

High definition screen

Info

Publication number
EP1230581A1
EP1230581A1 EP00971485A EP00971485A EP1230581A1 EP 1230581 A1 EP1230581 A1 EP 1230581A1 EP 00971485 A EP00971485 A EP 00971485A EP 00971485 A EP00971485 A EP 00971485A EP 1230581 A1 EP1230581 A1 EP 1230581A1
Authority
EP
European Patent Office
Prior art keywords
image
screen
light
embossed
transparent
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.)
Withdrawn
Application number
EP00971485A
Other languages
German (de)
French (fr)
Inventor
François Giry
Gèrard Debard
Pierre Piccaluga
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1230581A1 publication Critical patent/EP1230581A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • G03B21/62—Translucent screens

Definitions

  • the present process proposes to respect the physiological parameters of the impressions of the visual perception making it possible to render a three-dimension of the image and to give it a chromatic dynamic, to restore intensities of different color by a much greater range of shade. obtained by light diffraction.
  • the present method is to create superimposed multilayer structures of at least two different structures. A glossy layer generally in the background where the main image is formed and at least one translucent or transparent layer above the viewer side.
  • the present process of this multilayer must also be at least on one of the embossed structures, have surface irregularities, for example in the form of a diamond or a repetitive volume pattern.
  • the volume pattern obtained can be in the shape of a square, rectangle, honeycomb, or conical and the shapes side by side can be perfectly interlaced, joined, perfectly nested with each other.
  • the present process is therefore in the field of cinema and slide screens, image projection, television, a process high definition image by multiplication of light components of the original image which diffracts, produced by different reflective layers, and sometimes having embossings on at least one of the layers. It is a light amplification process of image reflections produced by a screen with multilayer structures with repetitive relief, where the image is projected.
  • the background layer of the screen where part of the main image is created, is bright, very reflective, and at least one other layer, structure, where another part of the light spectrum of the image is also formed. or transparent colorless.
  • the light rays coming from the image projector diffract and partly reflect on the first surface layer and this on both sides of its structure, and also allow the light rays to pass from the background of the screen which is very luminescent and which returns the light rays on the surface layer a second time with slightly different angles of incidence, this due to the rugged terrain.
  • the spectator perceives an image which is the addition of all these judicious diffraction effects, the overall perception of which is a high definition image.
  • the weaker light components due to the fact of the light diffractions by the multiple structures are for physiological visual perception much better perceived, appear in three dimensions and suppress the phenomenon of crushing due to the too strong direct light reflection.
  • Visual physiology prefers more complete information, therefore more numerous and less aggressive.
  • Visual intensity is perceived by adding information from light components of the same order.
  • the process conforms to the physiological needs of vision. This spectral decomposition of luminosity by natural filtering of form and structure, is clearly better perceived without fatigue by individuals and of much higher overall light intensity.
  • Apparatus for carrying out the present process consists of at least a first structure, a silver crystal, mirror two meters high and five meters wide in glass or plexiglass, the surface of which is molded in relief, embossed in a small pattern. millimeter following diamonds with a depth of five millimeters, a height of eight millimeters and a width of three millimeters.
  • This damaged mirror is coated with minus a second translucent or transparent structure, a thin glass 1 mm thick partially sandblasted or molded embossed.
  • the two structures are held securely together by a rubber molding, the whole constituting a multi-layer screen, of luminous amplification of visual projection.
  • the screen placed against a wall allows you to perceive high-definition images, a device that is not an exhaustive example.
  • Another alternative embodiment is a screen of luminous amplifying fabric woven with metalloplastic wires of 0.37 millimeter flat section, very reflective aluminum metalloplastic wire constituting the rear part of the fabric. It is together with aluminum wire, woven at least one transparent wire 0.25 millimeters wide and 12 microns thick in polyester on the front side presenting the place of the fabric facing the spectator.
  • This fabric thus formed by a person skilled in the art in the field of textiles, is then embossed by hot stamping giving this fabric the appearance of repetitive hilly relief.
  • This fabric thus formed in accordance with the process has the properties of light diffraction and moreover allows sound to pass through the screen in cinema use. Indeed, this type of screen fabric absorbs approximately 5 decibels and this regularly over almost the entire audible frequency band, which makes it a very powerful and acoustically useful multilayer bright screen for the diffusion of sound.
  • Another variant of the process in the field of computer or television screens is the application of a micro embossing with repetitive relief molded, engraved or sanded on the internal or front face of the tube or both front and rear, where the image is formed, the face which is then covered on its front part, on the viewer's side, with a translucent or transparent structure, an ultra thin embossed transparent plastic film a few microns thick, the whole is covered with a protective glass and optical effect by its thickness of 2 millimeters, which thus constitutes a glued multi-layer high-definition screen, non-exhaustive example of embodiment.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

Screens are already used for projecting images in cinema, video projection, television, computers and slides. Not all of these screens bring the image to life sufficiently due to a saturation with light which overwhelms the image and which is too intense for the eye. The aim of the inventive method is to respect the physiological parameters of sight and present the image in three dimensions and to give it a chromatic dynamic and a much greater range of shades, the latter being obtained by light diffraction of multilayer screens. The multiple layers diffract the rays of light coming from the projector, which are partially reflected on at least one first transparent or translucid layer that is embossed in places, with slightly different angles of incidence, and on at least one second, very reflective structure. The image seen by the viewer is the sum of all of these effects of diffraction. The overall perception is that of a three-dimensional image and an impression of intensified light. According to the inventive method, a fabric-type device is produced with a very luminescent thread at the back and a transparent thread woven in the surface. This fabric is embossed so as to produce a relief. The fabric is also useful for acoustics for use in a cinema screen. Another variant can be produced for television and computer screens according to this method. The method and device for high definition image vision and light intensification using direct light incidences can be applied to the fields of cinema, audio visual technology and image projection.

Description

ECRAN D'IMAGE HAUTE DEFINITION HIGH DEFINITION IMAGE SCREEN
Il est connu dans le domaine du cinéma, de la vidéo projection ou le domai- ne de la diapositive, de la télévision et des ordinateurs, l'usage d'écran afin de projeter des images en couleur ou en noir et blanc, le plus directement possible avec les intensités maximum directes qui écrasent l'image. Les écrans sont de constitution perlée suivant des grains particuliers, ou granités, présentant des aspérités ou lisses avec des films luminescents en écran de télévision. Les écrans pour le monde du cinéma sont particuliers puisqu'ils doivent présenter des microporosités afin de laisser passer le son émis de l'arrière de l'écran pour les auditeurs situés à l'avant de l'écran de l'image cinéma.It is known in the field of cinema, video projection or the field of the slide, television and computers, the use of screens in order to project images in color or in black and white, the most directly possible with the maximum direct intensities which overwrite the image. The screens are of pearl constitution according to particular grains, or granites, having asperities or smooth with luminescent films in television screen. The screens for the cinema world are particular since they must have microporosities in order to let the sound emitted from the rear of the screen pass for the listeners located at the front of the screen of the cinema image.
Tous ces écrans ne donnent pas assez de vie à l'image, c'est à dire que les couleurs sont toutes sur une même intensité chromatique. Il est également constaté une absence de restitution des plans dans l'espace rendant l'impression uniforme sans dimension virtuelle d'espace à cause de la saturation lumineuse trop intense pour l'oeil.All these screens do not give enough life to the image, that is to say that the colors are all on the same chromatic intensity. It is also noted an absence of restitution of the plans in space making the impression uniform without virtual dimension of space because of the light saturation too intense for the eye.
Le présent procédé se propose de respecter les paramètres physiologiques des impressions de la perception visuelle permettant de rendre une tri-dimension de l'image et de lui donner une dynamique chromatique, de restituer des intensités de couleur différente par une gamme de nuance beaucoup plus importante obtenue par diffraction lumineuse . Le présent procédé est de créer des structures multicouches superposées d' au moins deux structures différentes. Une couche brillante généralement en fond où se forme l'image principale et d'au moins une couche translucide ou transparente dessus côté du spectateur .The present process proposes to respect the physiological parameters of the impressions of the visual perception making it possible to render a three-dimension of the image and to give it a chromatic dynamic, to restore intensities of different color by a much greater range of shade. obtained by light diffraction. The present method is to create superimposed multilayer structures of at least two different structures. A glossy layer generally in the background where the main image is formed and at least one translucent or transparent layer above the viewer side.
Le présent procédé de ce multicouche doit être également au moins sur l'une des structures gaufré, présenter des irrégularités de surface, par exemple en forme de losange ou d'un motif volumique répétitif . Le motif volumique obtenu peut être en forme de carré, de rectangle, de nid d'abeilles, ou conique et les formes côte à côte peuvent être parfaitement entrelacées, jointes, parfaitement imbriquées les unes avec les autres. Le présent procédé est donc dans le domaine des écrans de cinéma et de diapositive, de projection d'image, de télévision, un procédé de haute définition d'image par multiplication de composantes lumineuses de l'image originale qui se diffracte, produite par des couches réfléchissantes différentes, et présentant parfois des gaufrages sur au moins une des couches. C'est un procédé d'amplification lumineuse de réflections d'images produit par un écran à structures multicouches à relief répétitif, où est projetée l'image. La couche de fond de l'écran, où se crée une partie de l'image principale est brillante, très réfléchissante, et au moins une autre couche, structure, où se forme également une autre partie du spectre lumineux de l'image est translucide ou transparente incolore . Les rayons lumineux parvenant du projecteur d'image se diffractent et se réfléchissent en partie sur la première couche de surface et cela sur les deux faces de sa structure, et laissent également passer les rayons lumineux du fond de l'écran qui est très luminescent et qui renvoie les rayons lumineux sur la couche de surface une deuxième fois avec des angles d'incidences un peu différents, ceci du au fait du relief accidenté. Le spectateur perçoit une image qui est l'addition de tous ces effets de diffractions judicieuses, dont la perception globale est une haute définition d'image. Les composantes lumineuses plus faibles dues au fait des diffractions lumineuses par les structures multiples sont pour la perception visuelle physiologique bien mieux perçues, apparaissent en trois dimensions et suppriment le phénomène d'écrasement du à la trop forte réflection lumineuse directe. La physiologie visuelle préfère des informations plus complètes donc plus nombreuses et moins agressives. L'intensité visuelle étant perçue par l'addition des informations des composantes lumineuses du même ordre. Le procédé est conforme aux nécessités physiologiques de la vision. Cette décomposition spectrale de luminosité par filtrage naturel de forme et de structure, est nettement mieux perçue sans fatigue par les individus et d'intensité lumineuse globale beaucoup plus élevée.The present process of this multilayer must also be at least on one of the embossed structures, have surface irregularities, for example in the form of a diamond or a repetitive volume pattern. The volume pattern obtained can be in the shape of a square, rectangle, honeycomb, or conical and the shapes side by side can be perfectly interlaced, joined, perfectly nested with each other. The present process is therefore in the field of cinema and slide screens, image projection, television, a process high definition image by multiplication of light components of the original image which diffracts, produced by different reflective layers, and sometimes having embossings on at least one of the layers. It is a light amplification process of image reflections produced by a screen with multilayer structures with repetitive relief, where the image is projected. The background layer of the screen, where part of the main image is created, is bright, very reflective, and at least one other layer, structure, where another part of the light spectrum of the image is also formed. or transparent colorless. The light rays coming from the image projector diffract and partly reflect on the first surface layer and this on both sides of its structure, and also allow the light rays to pass from the background of the screen which is very luminescent and which returns the light rays on the surface layer a second time with slightly different angles of incidence, this due to the rugged terrain. The spectator perceives an image which is the addition of all these judicious diffraction effects, the overall perception of which is a high definition image. The weaker light components due to the fact of the light diffractions by the multiple structures are for physiological visual perception much better perceived, appear in three dimensions and suppress the phenomenon of crushing due to the too strong direct light reflection. Visual physiology prefers more complete information, therefore more numerous and less aggressive. Visual intensity is perceived by adding information from light components of the same order. The process conforms to the physiological needs of vision. This spectral decomposition of luminosity by natural filtering of form and structure, is clearly better perceived without fatigue by individuals and of much higher overall light intensity.
Appareil de réalisation du présent procédé est constitué d'au moins une première structure, une glace argentée, miroir de deux mètres de hauteur et de cinq mètres de large en verre ou plexiglas dont la surface est moulée en relief , gaufrée en motif de faible dimension millimétrique suivant des losanges dont la profondeur est cinq millimètres, la hauteur.huit millimètres et la largeur, trois millimètres.Ce miroir accidenté est revêtu d'au moins une deuxième structure translucide ou transparente, une vitre fine de 1 millimètre d'épaisseur partiellement sablée ou moulée gaufrée. Les deux structures sont maintenues solidement ensemble par un moulage en caoutchouc, le tout constituant un écran multicouche, d'amplification lumineuse de projection visuelle. L'écran placé contre un mur permet de percevoir des images à haute définition, appareil exemple de réalisation non exhaustif.Apparatus for carrying out the present process consists of at least a first structure, a silver crystal, mirror two meters high and five meters wide in glass or plexiglass, the surface of which is molded in relief, embossed in a small pattern. millimeter following diamonds with a depth of five millimeters, a height of eight millimeters and a width of three millimeters. This damaged mirror is coated with minus a second translucent or transparent structure, a thin glass 1 mm thick partially sandblasted or molded embossed. The two structures are held securely together by a rubber molding, the whole constituting a multi-layer screen, of luminous amplification of visual projection. The screen placed against a wall allows you to perceive high-definition images, a device that is not an exhaustive example.
Une autre variante de réalisation comme exemple non limitatif , est un écran en tissu amplificateur lumineux tissé avec des fils métalloplastiques de 0,37 millimètre de section plate, fil métalloplastique d'aluminium très réfléchissant constituant la partie arrière du tissu. Il est conjointement au fil d'aluminium, tissé au moins un fil transparent de 0,25 millimètre de large et 12 microns d'épaisseur en polyester sur la face avant présentant l'endroit du tissu face au spectateur. Ce tissu ainsi constitué par un homme de l'art dans le domaine des textiles, est ensuite gaufré par matriçage à chaud donnant à ce tissu l'aspect de relief accidenté répétitif . Ce tissu ainsi constitué conforme au procédé a les propriétés de diffraction lumineuse et de plus permet au son de passer au travers de l'écran dans l'usage de cinéma. En effet, ce type de tissu écran absorbe environ 5 décibels et ce régulièrement sur presque toute la bande de fréquence audible, ce qui en fait un écran lumineux multicouche très performant et acoustiquement utile pour la diffusion du son.Another alternative embodiment, as a non-limiting example, is a screen of luminous amplifying fabric woven with metalloplastic wires of 0.37 millimeter flat section, very reflective aluminum metalloplastic wire constituting the rear part of the fabric. It is together with aluminum wire, woven at least one transparent wire 0.25 millimeters wide and 12 microns thick in polyester on the front side presenting the place of the fabric facing the spectator. This fabric thus formed by a person skilled in the art in the field of textiles, is then embossed by hot stamping giving this fabric the appearance of repetitive hilly relief. This fabric thus formed in accordance with the process has the properties of light diffraction and moreover allows sound to pass through the screen in cinema use. Indeed, this type of screen fabric absorbs approximately 5 decibels and this regularly over almost the entire audible frequency band, which makes it a very powerful and acoustically useful multilayer bright screen for the diffusion of sound.
Une autre variante du procédé dans le domaine des écrans d'ordinateur ou de télévision, est l'application d'un micro gaufrage à relief répétitif moulé , gravé ou sablé sur la face interne ou avant du tube ou les deux avant et arrière, où se forme l'image, face qui est ensuite recouverte sur sa partie avant, côté du spectateur, d'une structure translucide ou transparente, un film plastique transparent gaufré ultra fin de quelques microns d'épaisseur, l'ensemble est recouvert d'une vitre de protection et d'effet optique par son épaisseur de 2 millimètres , ce qui constitue ainsi un écran haute définition multicouche collé, exemple non exhaustif de réalisation.Another variant of the process in the field of computer or television screens is the application of a micro embossing with repetitive relief molded, engraved or sanded on the internal or front face of the tube or both front and rear, where the image is formed, the face which is then covered on its front part, on the viewer's side, with a translucent or transparent structure, an ultra thin embossed transparent plastic film a few microns thick, the whole is covered with a protective glass and optical effect by its thickness of 2 millimeters, which thus constitutes a glued multi-layer high-definition screen, non-exhaustive example of embodiment.
Procédé et appareil de vision d'image de haute définition et effet d'amplification de lumière par diffraction des incidences lumineuses directes par des écrans multicouches à relief accidenté, sont utiles pour tout le monde du cinéma de l'audio visuel et le monde de la manifestation des images. Method and apparatus for high definition image vision and effect of amplification of light by diffraction of direct light incidences by multilayer screens with uneven relief, are useful for everyone in the cinema of audio visual and the world of manifestation of images.

Claims

REVENDICATIONS
1°- Procédé d'amplification lumineuse sur des écrans de cinéma ou de télévision et pour tous les domaines visuels, où la diffraction décomposition spectrale de luminosité est due au filtrage naturel de structure et de forme multicouche de l'écran, constitué d'au moins une couche transparente ou translucide parfois gaufrée, en surface du côté du spectateur et d'au moins une couche brillante en fond à relief accidenté, gaufré , le spectateur perçoit l'addition de toutes les diffractions des rayons lumineux d'origine qui se diffractent et se réfléchissent par ce procédé d'écran multicouche. 2°- Appareil de réalisation d'écran , pour la projection d'image, constitué d'une structure multicouche, réalisé par au moins une structure à relief accidentée gaufrée, de motif millimétrique répétitif très réfléchissante , par exemple un miroir argenté, gaufré suivant un relief répétitif de faible dimension de grandeur millimétrique et révêtu d'au moins une structure trans- lucide transparente, par exemple une vitre partiellement sablée , les deux structures solidement assemblées constituant ainsi un écran qui posé contre un mur est un écran d'image amplificateur de lumière, avec des images de haute définition. 3°- Appareil de réalisation du présent procédé est un écran de cinéma amplificateur de lumière, composé d'au moins une structure très réfléchissante tissée, par exemple en fil métalloplastique d'aluminium en couche de fond , et reçoit pour le tissage de surface à l'endroit, du côté du spectateur au moins un tissage en fil translucide ou transparent, par exemple en fil de polyester, ce qui permet d'obtenir des effets de diffractions judicieuses, dont la perception globale est une haute définition d'image. 4°- Appareil selon la revendication 2 caractérisé en ce que le tissu d'écran reçoit un gaufrage , un relief répétitif de faible dimension millimétrique. 5°- Appareil selon la revendication 3 ou 4 caractérisé en ce que l'écran est acoustiquement utile pour la diffusion du son. 6°- Appareil pour les écrans de télévision et d'ordinateur, qui est constitué d'un micro gaufrage sur la face avant ou interne du tube très réfléchissantes où se crée l'image, ou les deux surfaces, et qui est revêtu sur sa face avant, coté du spectateur d'au moins une structure translucide ou transparente par exemple un film plastique gaufré, constituant ainsi un écran multicouche . 1 ° - Method of light amplification on cinema or television screens and for all visual fields, where the diffraction spectral decomposition of brightness is due to the natural filtering of structure and multilayer form of the screen, consisting of at at least one transparent or translucent layer, sometimes embossed, on the surface on the side of the spectator and at least one shiny layer in the background with uneven relief, embossed, the spectator perceives the addition of all the diffractions of the original light rays which are diffracted and are reflected by this multilayer screen process. 2 ° - Screen-making apparatus, for image projection, consisting of a multilayer structure, produced by at least one structure with embossed uneven relief, of repetitive millimeter pattern very reflective, for example a silver mirror, embossed according to a repetitive relief of small dimension of millimeter size and coated with at least one transparent translucent structure, for example a partially sanded glass, the two structures firmly assembled thus constituting a screen which posed against a wall is an image amplifier screen of light, with high definition images. 3 ° - Apparatus for carrying out the present method is a light amplifying cinema screen, composed of at least one highly reflective woven structure, for example made of aluminum metalloplastic wire as a base layer, and receives for surface weaving at the place, on the side of the spectator at least one weaving in translucent or transparent thread, for example in polyester thread, which makes it possible to obtain judicious diffraction effects, the overall perception of which is a high definition image. 4 ° - Apparatus according to claim 2 characterized in that the screen fabric receives an embossing, a repetitive relief of small millimeter dimension. 5 ° - Apparatus according to claim 3 or 4 characterized in that the screen is acoustically useful for the dissemination of sound. 6 ° - Apparatus for television and computer screens, which consists of a micro embossing on the front or internal face of the highly reflective tube where the image is created, or the two surfaces, and which is coated on its front face, side of the viewer of at least one translucent or transparent structure, for example an embossed plastic film, thus constituting a multilayer screen.
EP00971485A 1999-10-25 2000-10-24 High definition screen Withdrawn EP1230581A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9913554A FR2800176B1 (en) 1999-10-25 1999-10-25 HIGH DEFINITION IMAGE SCREEN BRIGHTNESS AMPLIFIER
FR9913554 1999-10-25
PCT/FR2000/002948 WO2001031398A1 (en) 1999-10-25 2000-10-24 High definition screen

Publications (1)

Publication Number Publication Date
EP1230581A1 true EP1230581A1 (en) 2002-08-14

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EP00971485A Withdrawn EP1230581A1 (en) 1999-10-25 2000-10-24 High definition screen

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EP (1) EP1230581A1 (en)
JP (1) JP2003513308A (en)
CN (1) CN1382267A (en)
AU (1) AU1033201A (en)
CA (1) CA2389045A1 (en)
FR (1) FR2800176B1 (en)
WO (1) WO2001031398A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2859288B1 (en) * 2003-09-02 2006-02-10 Screen Res PROJECTION SCREEN, IN PARTICULAR FOR VIDEO
FR2878042B1 (en) * 2004-11-18 2007-10-26 Gerard Debard DIRECT AND INDIRECT LIGHT FOR IMAGE PRODUCTION
WO2007023482A2 (en) 2005-08-22 2007-03-01 Nds Limited Movie copy protection
WO2007080235A1 (en) * 2006-01-13 2007-07-19 Gerard Debard Method and device for the reproduction of images by means of direct and indirect light
US8040603B2 (en) 2007-09-24 2011-10-18 Giry Francois Transparency and backlight for cinema screen
US9989777B1 (en) 2017-06-05 2018-06-05 Disney Enterprises, Inc. Accurate and balanced lighting in a pepper's ghost projection system for live cinematic performances

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Publication number Priority date Publication date Assignee Title
JP2643713B2 (en) * 1992-03-13 1997-08-20 株式会社日立製作所 LCD projection display
JPH0815779A (en) * 1994-06-27 1996-01-19 Hitachi Ltd Screen for liquid crystal projector
CA2279310A1 (en) * 1997-01-28 1998-08-13 Stephen A. Benton Video projection holographic screen, system and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0131398A1 *

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AU1033201A (en) 2001-05-08
CN1382267A (en) 2002-11-27
CA2389045A1 (en) 2001-05-03
WO2001031398A1 (en) 2001-05-03
FR2800176A1 (en) 2001-04-27
JP2003513308A (en) 2003-04-08
FR2800176B1 (en) 2002-01-18

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