EP2193402A1 - Transparency and backlight for cinema screen - Google Patents

Transparency and backlight for cinema screen

Info

Publication number
EP2193402A1
EP2193402A1 EP07858377A EP07858377A EP2193402A1 EP 2193402 A1 EP2193402 A1 EP 2193402A1 EP 07858377 A EP07858377 A EP 07858377A EP 07858377 A EP07858377 A EP 07858377A EP 2193402 A1 EP2193402 A1 EP 2193402A1
Authority
EP
European Patent Office
Prior art keywords
light
screen
multilayer
visual
box
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Withdrawn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
EP07858377A
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 EP2193402A1 publication Critical patent/EP2193402A1/en
Withdrawn legal-status Critical Current

Links

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
    • G03B21/565—Screens allowing free passage of sound

Definitions

  • the cinema screens are perforated canvas to let the sound, the texture is thick and returns the direct light from the projector. Only the overhead projector screens are transparent to let the rays coming from behind the screen. This overhead projector technology does not provide large screen areas.
  • Two observations of natural phenomena oblige us to take into account the facts that firstly all objects absorb some of the light and reject the visible colors that are not absorbed, the second is that the ambient light comes from all sides, including from behind the object with all the degrees of incidence of light diffractions reflected therein. These two facts constitute the motivation for this filing of a patent application. Indeed the use of a multitude of light source in the background of the screen can restore a balance of natural light that does not exist on the current cinema screens. We have deposited a PCT deposition screen No.
  • FR2006 / 000073 which is the use of a multilayer screen whose multilayer bottom is a highly reflective surface composed for example of a micronized aluminum foil or aluminum or silver projected under vacuum, the layer is translucent, the other layers being translucent or transparent, the assembly greatly increasing the luminous diffractions of the projector.
  • the effect is optionally reinforced by droplet micros or transparent microbeads placed between the layers of the multilayer.
  • This screen is made with metalloplastic films that have the property of being fine and let pass, filter a low intensity of diffuse light soft silvered or aluminized background film.
  • This principle of added lights in the background of the screen adds an expensive counter-light to the quality of the light of the images which allows to obtain an image vision in a real natural balance of the colors and perspectives of shape of the objects.
  • the rear stable lights provide visual comfort and chromatic stability that enormously amplify the diffractions.
  • the chromatic and the density of the lights are regulated by this principle made possible by the translucent bottom layer, and the rear lights which give a projection in conformity with the optical sensitivity of the eye and the nervous system, the projection is not aggressive. Contrast variations are not useful, while the amount of information of sensitive variations of all the lights is crucial, satisfied by the present application.
  • the large amount of soft variation of the lights is more effective than the intensity variation of the harsh direct harsh contrast of the projector which mutes the image and tires the view.
  • This screen principle offers a visual comfort and a relief image reading accuracy, possible by the metalloplastic film that manages the balance on the front and back side of the direct and indirect light.
  • the metalloplastic films have thicknesses of up to 100 or even 200 microns, which allows to guess a source of light that merges with the projection providing a regularization of the light amplitudes favorable to the comfortable vision of the film.
  • This screen also allows the diffusion of sound waves, indeed its fine structure lets the sound pass without alteration in frequency or intensity.
  • the screen (1) is 1.5 meters high and 2.5 meters wide and consists of a homogeneous multilayer film without holes.
  • the film constituting the screen is placed on a frame (2) to be stretched.
  • the screen is laid stretched either glued or held by pinching.
  • Neon tubes can therefore fulfill the requested functions.
  • acoustic loudspeakers (5, 6) can be installed in order to diffuse the soundtrack of the films presented.
  • the screen is acoustically transparent due to its elasticity to the audio frequency ranges, a slight linear attenuation of low correction slope on the bass is compensated without problem.
  • the back of the frame is closed to prevent any scattering of light in the room where the vision of the film takes place.
  • FIG.2 shows in section AA the device of 7 (I to 7) sound baffles also preventing light from passing through, the baffles made of wood or injected plastic or polymer for example are made in black or coated with a black color not dissipating the light.
  • the number of baffles is realized by those skilled in the art. This type of screen simplifies the size of a home theater system, at home or in a professional room, to have a compact set of high quality audio visual.
  • the visual audio representations in the narrow conditions of a stand or event in a truck for example is simplified by this implementation giving excellent results in quality in the two distinct areas of the image on the one hand, and secondly in the field of sound broadcasting, it is a plus for the world of audio visual.
  • This configuration linking sound and image are the ideal conditions for sensory perception of the cognitive functions of the brain by the highly sensitive common point of diffusion that constitutes the metalloplastic film.
  • Amplifier technology can also be inserted into the cabinet on one side.

Abstract

Cinema screens are made of a perforated cloth for letting the sound through, with a thick texture that reflects the direct light of the projector. Two assessed natural phenomena force us to take into account that, first, all objects absorb a portion of the light and reject the visible non-absorbed colours and, second, ambient light flows in from all sides, including the back of the object, with all incidence degrees of light diffractions reflected therein. These two facts motivated the present patent application. Practically, the use of a light source behind the screen re-establishes a natural light balance that does not exist on the current cinema screens. The principle of a light source behind the screen adds a contre-jour effect that is important for the light quality of images in order to obtain an image vision without saturation and a natural balance of the colours and the perspectives of the objects shapes. Indeed, the stable back light brings a visual comfort and a chromatic stability that vary without excess. Chromatics and light density are adjusted by this principle using a translucent bottom layer, and provides a projection suitable for the optical sensitivity of the eye and the nervous system, which makes the projection non-aggressive for the entire audio-visual realm.

Description

TRANSPARENCE ET LUMIERE ARRIERE D'ECRAN DE CINEMA TRANSPARENCY AND REAR LIGHT OF CINEMA SCREEN
Les écrans de cinéma sont en toile trouée pour laisser passer le son, la texture est épaisse et renvoie la lumière directe du projecteur. Seuls les écrans des rétroprojecteurs sont transparents pour laisser passer les rayons venant de l'arrière de l'écran. Cette technologie de rétroprojecteur ne permet pas d'obtenir de grandes surfaces d'écran. Deux constats de phénomènes naturels nous obligent à prendre en compte les faits que premièrement tous les objets absorbent une partie de la lumière et rejettent les couleurs visibles qui ne sont pas absorbées, le deuxième est que la lumière ambiante vient de tous les côtés, y compris de derrière l'objet avec tous les degrés d'incidences de diffractions lumineuses qui s'y reflètent. Ces deux faits constituent la motivation de la présente dépose de demande de brevet. En effet l'usage d'une multitude de source de lumière en arrière plan de l'écran permet de rétablir un équilibre de lumière naturelle qui n'existe pas sur les écrans de cinéma actuel. Nous avons déposé un écran par dépôt PCT N° FR2006/000073 qui est l'usage d'un écran multicouche dont le fond du multicouche est une surface hautement réfléchissante composée par exemple d'une feuille d'aluminium micronisé ou d'aluminium ou argent projeté sous vide, la couche est translucide, les autres couches étant translucide ou transparentes, l'ensemble augmentant grandement les diffractions lumineuses du projecteur. L'effet est renforcé éventuellement par des micros gouttelettes ou des micros billes transparentes placées entre les couches du multicouche. Cet écran est réalisé avec des films métalloplastiques qui ont la propriété d'être fins et de laisser passer, filtrer une faible intensité de lumière diffuse douce par le film de fond argenté ou aluminisé. Ce principe de lumières ajoutées en arrière plan d'écran ajoute un contre jour cher à la qualité de la lumière des images ce qui permet d'obtenir une vision d'image dans un équilibre naturel réel des couleurs et des perspectives de forme des objets. En effet les lumières stables arrière apportent un confort visuel et une stabilité chromatique qui amplifient énormément les diffractions. La chromatique et la densité des lumières sont régulées par ce principe rendu possible par la couche de fond translucide, et les lumières arrières qui donnent une projection conforme à la sensibilité optique de l'œil et du système nerveux, la projection est non agressive. Les variations de contraste ne sont pas utiles, alors que la quantité d'information de variations sensibles de toutes les lumières est capitale, satisfaite par la présente demande. La quantité importante de variation douce des lumières est plus efficace que la variation d'intensité des contrastes agressifs de lumière directe dure du projecteur qui tasse l'image et fatigue la vue. Ce principe d'écran offre un confort visuel et une précision de lecture d'image en relief, possible par le film métalloplastique qui gère l'équilibre sur la face avant et arrière de la lumière directe et indirecte. Les films en métalloplastique ont des épaisseurs se calculant jusqu'à 100 voir 200 microns, ce qui permet de laisser passer deviner une source de lumière arrière qui se confond avec la projection apportant une régularisation des amplitudes lumineuses favorables à la vision confortable du film. Cet écran permet également la diffusion des ondes sonores, en effet sa structure fine laisse passer le son sans altération en fréquence ou intensité. Nous n'avons pas noté d'incidence de distorsion acoustique, même une amélioration sur les graves et les aigus qui sont devenus propres, doux et très présents. Les conditions de réalisation sont effectuées par l'homme de l'art et cet exemple n'est pas limitatif de la mise en œuvre Fig.l. L'écran (1) est de dimension de 1,5 mètre de hauteur et de 2,5 mètres de large et est constitué d'un film multicouche homogène sans trou. Le film constituant l'écran est placé sur un cadre (2) pour γ être tendu. L'écran est posé tendu soit collé soit tenu par pincement. Dans l'espace de l'intérieur du cadre déterminé par l'épaisseur (3) du cadre de 40 centimètres de profondeur par exemple, il est utile de placer une ou plusieurs séries de Leeds (4) ou une ou plusieurs lampes et son ou ses réflecteurs de diffusion. La couleur d'émissions lumineuses des Leeds, une cinquantaine ou une ou plusieurs centaines par exemple à intensité réglable, peut se situer dans la gamme chromatique de l'ultraviolet de la nature de couleurs des tubes néon de lumière noire, pouvant être déclinée jusqu'au spectre blanc. Des tubes néons peuvent donc remplir les fonctions demandées. Dans l'épaisseur du cadre qui constitue sa profondeur, peuvent être implantés des haut- parleurs acoustiques (5,6) afin de diffuser la bande son des films présentés. L'écran est transparent acoustiquement du fait de son élasticité aux gammes de fréquence audio, une légère atténuation linéaire de faible pente de correction sur les graves se compense sans problème. L'arrière du cadre est fermé pour éviter toute diffusion de la lumière dans la pièce où se passe la vision du film. On peut imaginer un caisson acoustique derrière l'écran relativement grand et muni de chicanes qui empêchent la lumière de passer mais laisse passer les ondes sonores qui contournent les chicanes. Le dessin Fig.2 représente en coupe A-A le dispositif de 7 (Ià7) chicanes sonores empêchant également de laisser passer la lumière, les chicanes en bois ou en plastique injecté ou polymère par exemple sont réalisées en couleur noire ou revêtues d'une couleur noire ne dissipant pas la lumière. Le nombre de chicane est réalisé par l'homme de l'art. Ce type d'écran permet de simplifier l'encombrement d'un ensemble home cinéma, à domicile comme dans une salle professionnelle, afin d'avoir un ensemble compact de haute qualité audio visuelle. Les représentations audio visuelles dans les conditions étroites d'un stand ou d'un événementiel dans un camion par exemple se trouve simplifiées par cette mise en œuvre donnant des résultats excellents de qualité dans les deux domaines distincts de l'image d'une part, et d'autre part dans le domaine de la diffusion sonore, c'est un plus pour le monde de l'audio visuel. Cette configuration liant son et image sont les conditions idéales des perceptions sensorielles des fonctions cognitives du cerveau par le point commun de diffusion ultra sensible que constitue le film métalloplastique. La technologie des amplificateurs peut également être insérée dans le caisson sur un des côtés. The cinema screens are perforated canvas to let the sound, the texture is thick and returns the direct light from the projector. Only the overhead projector screens are transparent to let the rays coming from behind the screen. This overhead projector technology does not provide large screen areas. Two observations of natural phenomena oblige us to take into account the facts that firstly all objects absorb some of the light and reject the visible colors that are not absorbed, the second is that the ambient light comes from all sides, including from behind the object with all the degrees of incidence of light diffractions reflected therein. These two facts constitute the motivation for this filing of a patent application. Indeed the use of a multitude of light source in the background of the screen can restore a balance of natural light that does not exist on the current cinema screens. We have deposited a PCT deposition screen No. FR2006 / 000073 which is the use of a multilayer screen whose multilayer bottom is a highly reflective surface composed for example of a micronized aluminum foil or aluminum or silver projected under vacuum, the layer is translucent, the other layers being translucent or transparent, the assembly greatly increasing the luminous diffractions of the projector. The effect is optionally reinforced by droplet micros or transparent microbeads placed between the layers of the multilayer. This screen is made with metalloplastic films that have the property of being fine and let pass, filter a low intensity of diffuse light soft silvered or aluminized background film. This principle of added lights in the background of the screen adds an expensive counter-light to the quality of the light of the images which allows to obtain an image vision in a real natural balance of the colors and perspectives of shape of the objects. In fact, the rear stable lights provide visual comfort and chromatic stability that enormously amplify the diffractions. The chromatic and the density of the lights are regulated by this principle made possible by the translucent bottom layer, and the rear lights which give a projection in conformity with the optical sensitivity of the eye and the nervous system, the projection is not aggressive. Contrast variations are not useful, while the amount of information of sensitive variations of all the lights is crucial, satisfied by the present application. The large amount of soft variation of the lights is more effective than the intensity variation of the harsh direct harsh contrast of the projector which mutes the image and tires the view. This screen principle offers a visual comfort and a relief image reading accuracy, possible by the metalloplastic film that manages the balance on the front and back side of the direct and indirect light. The metalloplastic films have thicknesses of up to 100 or even 200 microns, which allows to guess a source of light that merges with the projection providing a regularization of the light amplitudes favorable to the comfortable vision of the film. This screen also allows the diffusion of sound waves, indeed its fine structure lets the sound pass without alteration in frequency or intensity. We did not notice an incidence of acoustic distortion, even an improvement on bass and treble that became clean, soft and very present. The conditions of realization are carried out by those skilled in the art and this example is not limiting to the implementation Fig.l. The screen (1) is 1.5 meters high and 2.5 meters wide and consists of a homogeneous multilayer film without holes. The film constituting the screen is placed on a frame (2) to be stretched. The screen is laid stretched either glued or held by pinching. In the space of the interior of the frame determined by the thickness (3) of the frame of 40 centimeters of depth for example, it is useful to place one or more series of Leeds (4) or one or more lamps and his or its diffusion reflectors. The color of the light emissions of the Leeds, fifty or one or several hundreds for example with adjustable intensity, can be located in the chromatic range of the ultraviolet of the color nature of the neon tubes of black light, which can be declined until to the white spectrum. Neon tubes can therefore fulfill the requested functions. In the thickness of the frame which constitutes its depth, acoustic loudspeakers (5, 6) can be installed in order to diffuse the soundtrack of the films presented. The screen is acoustically transparent due to its elasticity to the audio frequency ranges, a slight linear attenuation of low correction slope on the bass is compensated without problem. The back of the frame is closed to prevent any scattering of light in the room where the vision of the film takes place. One can imagine an acoustic box behind the screen relatively large and equipped with baffles that prevent light from passing but lets pass the sound waves that bypass the baffles. The drawing Fig.2 shows in section AA the device of 7 (I to 7) sound baffles also preventing light from passing through, the baffles made of wood or injected plastic or polymer for example are made in black or coated with a black color not dissipating the light. The number of baffles is realized by those skilled in the art. This type of screen simplifies the size of a home theater system, at home or in a professional room, to have a compact set of high quality audio visual. The visual audio representations in the narrow conditions of a stand or event in a truck for example is simplified by this implementation giving excellent results in quality in the two distinct areas of the image on the one hand, and secondly in the field of sound broadcasting, it is a plus for the world of audio visual. This configuration linking sound and image are the ideal conditions for sensory perception of the cognitive functions of the brain by the highly sensitive common point of diffusion that constitutes the metalloplastic film. Amplifier technology can also be inserted into the cabinet on one side.

Claims

REVENDICATIONS
1°- Procédé d'un éclairage en arrière plan de l'écran d'image de cinéma, possible par l'usage d'un écran multicouche en métalloplastique avec fond hautement réfléchissant n'étant pas troué, de faible épaisseur translucide qui laisse passer, filtrer une lumière diffuse de faible intensité, qui diminue les contrastes agressifs du projecteur et augmente les informations lumineuses, par des éclairages placées dans un caisson en arrière de l'écran.1 ° - Process of a background illumination of the cinema image screen, possible by the use of a multilayer screen made of metalloplastic with a highly reflective background not having a hole, a translucent thin layer that passes through , filtering a diffuse light of low intensity, which reduces the aggressive contrasts of the projector and increases the light information, by lighting placed in a box behind the screen.
T- Procédé selon la revendication 1 caractérisé en ce que la présence du caisson permet de placer des haut-parleurs derrière l'écran non troué, écran transparent au spectre sonore.T- Method according to claim 1 characterized in that the presence of the box allows to place speakers behind the unpainted screen, transparent screen to the sound spectrum.
3°- Appareil pour écran de cinéma constitué d'un caisson, en bois ou polymère par exemple, qui permet de tenir l'écran collé ou tenu par pincement, écran constitué de film multicouche métalloplastique, de faible épaisseur avec fond en aluminium ou argent, translucide et les autres couches transparentes, écran qui permet de diffusée par des lampes telles que des Leeds ou des néons une lumière un éclairage qui est filtré par l'écran multicouche de manière douce qui diminue les contrastes, les agressivités visuelles et augmente les quantités d'informations lumineuses avant et arrière de l'écran, informations qui varient avec plus de douceur, ce qui est un confort visuel et une précision de lecture d'image en relief. 4°-Appareil selon la revendication 3 caractérisé par la présence de gouttelettes ou de micros billes transparentes entre les couches dans le film multicouche pour augmenter les diffractions lumineuses.3 ° - Apparatus for a cinema screen consisting of a box, made of wood or polymer for example, which makes it possible to hold the screen glued or held by pinching, screen made of multilayer metalloplastic film, thin with aluminum or silver bottom , translucent and other transparent layers, a screen that can be diffused by lamps such as Leeds or neon lights a light that is filtered by the multilayer screen in a gentle way that reduces contrasts, visual aggressiveness and increases the quantities bright information front and back of the screen, information that vary more smoothly, which is a visual comfort and accuracy of relief image reading. 4 ° -A device according to claim 3 characterized by the presence of droplets or micro transparent beads between the layers in the multilayer film to increase the light diffractions.
5°- Appareil selon la revendication 3 caractérisé par la couleur d'émissions lumineuses des Leeds , des lampes ou des néons qui peuvent se situer dans la gamme chromatique de l'ultraviolet de la nature de couleurs des tubes néon de lumière noire, pouvant être déclinée jusqu'au spectre blanc.5 ° - Apparatus according to claim 3 characterized by the color of Leeds light emissions, lamps or neons that may be in the chromatic range of the ultraviolet of the color nature of neon tubes of black light, which can be declined to the white spectrum.
6° Appareil selon la revendication 3 ou 4 caractérisé par l'implantation de haut parleurs dans le caisson, en arrière de l'écran multicouche, avec la possibilité de placer des chicanes acoustiques, afin d'avoir un ensemble compact de haute qualité audio visuel remplissant les conditions neurosensorielles cognitives du cerveau. 6 ° Apparatus according to claim 3 or 4 characterized by the implantation of speakers in the box, behind the multilayer screen, with the possibility of placing acoustic baffles, to have a compact set of high quality audio visual fulfilling the cognitive neurosensory conditions of the brain.
EP07858377A 2007-09-24 2007-09-24 Transparency and backlight for cinema screen Withdrawn EP2193402A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2007/001550 WO2009040480A1 (en) 2007-09-24 2007-09-24 Transparency and backlight for cinema screen

Publications (1)

Publication Number Publication Date
EP2193402A1 true EP2193402A1 (en) 2010-06-09

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WO (1) WO2009040480A1 (en)

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CN203894527U (en) * 2013-05-09 2014-10-22 图象公司 System for vibrating screen
CN103531105B (en) * 2013-10-21 2016-02-17 惠州市德赛智能科技有限公司 A kind of outdoor LED display screen module preventing encapsulating hourglass glue
US20160070161A1 (en) * 2014-09-04 2016-03-10 Massachusetts Institute Of Technology Illuminated 3D Model

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WO2009040480A1 (en) 2009-04-02
US8040603B2 (en) 2011-10-18
US20100290113A1 (en) 2010-11-18

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