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WO1997019435A1 - Ecran flexible, mince, convexe ou concave, pourvu d'une surface d'affichage de plusieurs metres carres, aux fins d'affichage de graphiques informatiques et/ou video - Google Patents

Ecran flexible, mince, convexe ou concave, pourvu d'une surface d'affichage de plusieurs metres carres, aux fins d'affichage de graphiques informatiques et/ou video Download PDF

Info

Publication number
WO1997019435A1
WO1997019435A1 PCT/NL1996/000450 NL9600450W WO9719435A1 WO 1997019435 A1 WO1997019435 A1 WO 1997019435A1 NL 9600450 W NL9600450 W NL 9600450W WO 9719435 A1 WO9719435 A1 WO 9719435A1
Authority
WO
WIPO (PCT)
Prior art keywords
screen
fibres
display
video
computer graphics
Prior art date
Application number
PCT/NL1996/000450
Other languages
English (en)
Inventor
Ronald Evert Opdenberg
Original Assignee
Ronald Evert Opdenberg
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 Ronald Evert Opdenberg filed Critical Ronald Evert Opdenberg
Priority to AU75904/96A priority Critical patent/AU7590496A/en
Publication of WO1997019435A1 publication Critical patent/WO1997019435A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof

Definitions

  • the invention describes a screen with an active display surface of several square meters on which computer graphics or video can be displayed.
  • the screen can be constructed flat or curved.
  • the depth of the screen is limited to 200 - 300 mm.
  • the video signal accepted by the screen can either be Composite Video, RGBS or the (S)VGA signal from a monitor port on a PC.
  • Frontproj ection systems based on high intensity CRT's have quite a few disadvantages.
  • This invention opens up the possibility of video and computer graphics display of high quality on screens easily placable indoors or outdoors. These screens do not burn-in and require little maintenance. Dimensions and weight of the screen permit both standing and hanging use.
  • the screen offers 24-bit colourdepth, so that 16 million colours can be put on screen. At a resolution of at least 640*480 pixels the dimensions could be 2,56 by 1.92 by 0.2 meters.
  • the (light) intensity of the display is generated by one DLP in combination with one high efficiency light source.
  • the light flux through the system can be controlled by both dimming the light source or by influencing the duty cycles ofthe Micromirror device.
  • the image is generated by directing light from a lamp onto a Digital Micromirror Device (DMD) which its many mirrors reflect to form an image.
  • DMD Digital Micromirror Device
  • the image at this stage measures a few tens of millimetres by a few tens of millimetres, its exact dimensions depending on resolution i.e. the number of pixels horizontally and vertically.
  • a colour wheel can be rotated in the light beam, so that each colour phase on the wheel is in synchrony with the display of the red, green and blue images formed on the mirror grid.
  • the light reflected by the mirror device is of very high intensity. It is reflected so that an image is formed on the surface of the Fibre Optic Array (FOA).
  • Each mirror illuminates a corresponding fibre or group of fibres.
  • the surface of the FOA needs to be well polished and precisely flat; the ends of all fibres are then in the image plane. It is also possible to insert a diffuser at this point. Between DMD and FOA a heat filter may be used if the light spectrum makes this necessary.
  • a heat filter may be used between DMD and FOA if the light spectrum makes this necessary.
  • All fibres can be made to end in a flat surface or in a curved one.
  • the image can be formed on curved (convex or concave) surfaces. This will hardly influence image generation.
  • Typical applications could be: cylindrical, where the systems functions as a digital advertising column; or hollow, shaped as segment of a sphere or ring, for immersive image generation applications. (See Figure 2. Examples of flat screens with video or computer graphics and Figure 3. Examples of a hollow, curved shell.) If necessary, the screen can be made flexible to some degree so that it can be bent to fit certain installations.
  • the display is made up of a large number of optical fibres that are wired individually. These pixels form a contiguous array, each pixel carrying every colour, so that a high resolution is perceived and the display can 'be viewed from rather close to distances up to tens of meters.
  • the fibres in the display differ in length. Each fibre has the optimal length to fit between the FOA and its position on the screen.
  • the fibre cost can be kept low as a result, and the display can be constructed thin without excess fibres in the way.
  • the back of the screen will be finished with a light absorbing coating to improve the contrast of the screen, absorbing scattered light
  • the combination of digital image generation technology with the lightguides and the overall construction lead to the exceptional thinness ofthe display; it is only 200-300mm thick.
  • An extemal signal source such as RGB(S), or a (S)VGA signal from a computer is displayed on the screen. It now functions as a monitor.
  • an intemal processor may generate a image, either fully standalone, from a
  • CD-source or from a network source.
  • the construction of the screens is such that they can be combined (coupled) to form very large image surfaces without visible seams.
  • the construction is light.
  • the entire screen will weigh less than 100 kg.
  • the screens do not generate harmful EM radiation.
  • the screens have a very high refresh rate (between 450 and 1500 Hz). This ensures a steady image without line flicker, even in combination with fluorescent lighting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un affichage flexible de grande dimension, à génération d'images totalement numériques, servant à afficher des graphiques informatiques et vidéo. L'utilisation de guides lumineux en fibre optique, en combinaison avec une source lumineuse et un calculateur numérique, permet la réalisation d'un écran exceptionnellement mince ainsi que d'une surface d'affichage de plusieurs mètres carrés. On peut coupler sans raccord ces écrans afin d'obtenir des surfaces d'images encore plus grandes.
PCT/NL1996/000450 1995-11-17 1996-11-14 Ecran flexible, mince, convexe ou concave, pourvu d'une surface d'affichage de plusieurs metres carres, aux fins d'affichage de graphiques informatiques et/ou video WO1997019435A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU75904/96A AU7590496A (en) 1995-11-17 1996-11-14 A thin, flexible screen, convex or concave, with a display surface of several square meters to display computer graphics and/or video

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1001676A NL1001676C2 (nl) 1995-11-17 1995-11-17 Een plat, of hol of bol, flexibel scherm met een oppervlak van enkele vierkante meters voor het weergeven van computergraphics en videobeelden. Het scherm is zodanig opgebouwd dat het oppervlak vlak of enkelvoudig of dubbelvoudig gekromd kan zijn. De diepte van het beeldvlak is beperkt tot 200 - 300 mm.
NL1001676 1995-11-17

Publications (1)

Publication Number Publication Date
WO1997019435A1 true WO1997019435A1 (fr) 1997-05-29

Family

ID=19761868

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1996/000450 WO1997019435A1 (fr) 1995-11-17 1996-11-14 Ecran flexible, mince, convexe ou concave, pourvu d'une surface d'affichage de plusieurs metres carres, aux fins d'affichage de graphiques informatiques et/ou video

Country Status (3)

Country Link
AU (1) AU7590496A (fr)
NL (1) NL1001676C2 (fr)
WO (1) WO1997019435A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998006560A1 (fr) * 1996-08-08 1998-02-19 Sri International Appareil de fabrication automatique d'objets tridimensionnels, et procedes d'utilisation associes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1001676C2 (nl) * 1995-11-17 1996-10-15 Ronald Evert Opdenberg Een plat, of hol of bol, flexibel scherm met een oppervlak van enkele vierkante meters voor het weergeven van computergraphics en videobeelden. Het scherm is zodanig opgebouwd dat het oppervlak vlak of enkelvoudig of dubbelvoudig gekromd kan zijn. De diepte van het beeldvlak is beperkt tot 200 - 300 mm.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275061A2 (fr) * 1987-01-12 1988-07-20 Inwave Corporation Tableau pour l'affichage d'images optiques
EP0324147A2 (fr) * 1988-01-11 1989-07-19 Seiko Epson Corporation Appareil d'affichage à guidage de lumière
NL8900093A (nl) * 1989-01-16 1990-08-16 Nederland Haarlem B V Lichtsignaalgever voor signaleringsdoeleinden.
EP0663770A1 (fr) * 1993-11-01 1995-07-19 Texas Instruments Incorporated Système d'affichage à miroir numérique déformable
NL1001676C2 (nl) * 1995-11-17 1996-10-15 Ronald Evert Opdenberg Een plat, of hol of bol, flexibel scherm met een oppervlak van enkele vierkante meters voor het weergeven van computergraphics en videobeelden. Het scherm is zodanig opgebouwd dat het oppervlak vlak of enkelvoudig of dubbelvoudig gekromd kan zijn. De diepte van het beeldvlak is beperkt tot 200 - 300 mm.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275061A2 (fr) * 1987-01-12 1988-07-20 Inwave Corporation Tableau pour l'affichage d'images optiques
EP0324147A2 (fr) * 1988-01-11 1989-07-19 Seiko Epson Corporation Appareil d'affichage à guidage de lumière
NL8900093A (nl) * 1989-01-16 1990-08-16 Nederland Haarlem B V Lichtsignaalgever voor signaleringsdoeleinden.
EP0663770A1 (fr) * 1993-11-01 1995-07-19 Texas Instruments Incorporated Système d'affichage à miroir numérique déformable
NL1001676C2 (nl) * 1995-11-17 1996-10-15 Ronald Evert Opdenberg Een plat, of hol of bol, flexibel scherm met een oppervlak van enkele vierkante meters voor het weergeven van computergraphics en videobeelden. Het scherm is zodanig opgebouwd dat het oppervlak vlak of enkelvoudig of dubbelvoudig gekromd kan zijn. De diepte van het beeldvlak is beperkt tot 200 - 300 mm.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998006560A1 (fr) * 1996-08-08 1998-02-19 Sri International Appareil de fabrication automatique d'objets tridimensionnels, et procedes d'utilisation associes

Also Published As

Publication number Publication date
AU7590496A (en) 1997-06-11
NL1001676A1 (nl) 1996-01-12
NL1001676C2 (nl) 1996-10-15

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