EP0603465B1 - Procédure et disposition pour la représentation optique d'informations - Google Patents

Procédure et disposition pour la représentation optique d'informations Download PDF

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Publication number
EP0603465B1
EP0603465B1 EP93114019A EP93114019A EP0603465B1 EP 0603465 B1 EP0603465 B1 EP 0603465B1 EP 93114019 A EP93114019 A EP 93114019A EP 93114019 A EP93114019 A EP 93114019A EP 0603465 B1 EP0603465 B1 EP 0603465B1
Authority
EP
European Patent Office
Prior art keywords
projection
projected area
light valve
picture
projected
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.)
Expired - Lifetime
Application number
EP93114019A
Other languages
German (de)
English (en)
Other versions
EP0603465A1 (fr
Inventor
Bernd Dr. Brauer
Michael Dipl.-Ing. Schlüter
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.)
Funkwerk Systems GmbH
Original Assignee
MAN Systemelektronik GmbH
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 MAN Systemelektronik GmbH filed Critical MAN Systemelektronik GmbH
Publication of EP0603465A1 publication Critical patent/EP0603465A1/fr
Application granted granted Critical
Publication of EP0603465B1 publication Critical patent/EP0603465B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G09F9/35—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 being liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds

Definitions

  • the invention relates to a method for optical representation of information according to claim 1 and an arrangement for optical Representation according to the preamble of claim 5.
  • FR-A-2 607 301 presents an arrangement for optical display of information on a transparent projection surface in transmitted light projection with several projection modules before, with a shadow projection from each projection module of an image part can be generated on the projection surface and wherein the shadow projections of the image parts on the projection surface can be joined together to form a real overall picture. So far is also a method for optical from FR-A-2 607 301 Presentation of information on a transparent Projection surface in transmitted light projection with several projection modules derivable. Each projection module a shadow projection of a part of the image on the projection surface generated. In addition, the shadow projections the parts of the image on the projection surface to a real overall picture joined together. A disadvantage of this arrangement however, their overall design and the procedure has been proven in connection therewith.
  • this arrangement is in itself due to the many individual components are relatively expensive to build, not very compact and therefore very prone to failure. So includes this device next to the light source, the optical fiber, the light valve in the form of a liquid crystal cell and the transparent projection surface including a condenser, around a parallel light beam towards the light valve align a lens to form the real image, a field or. Collective lens to adjust the divergence to a value in the Reduce order of magnitude of typically 1 to 3 ° and, if necessary some mirrors to match the overall length of the Shorten projection modules. Because of this multitude of This arrangement also makes individual components very cost-intensive Manufacturing, maintenance and solution Repair the entire assembly.
  • this device is based on an optical principle of operation, which is relatively complicated and at which large-scale presentation of information is not easy ensures a bright, high-contrast and at the same time homogeneous image.
  • This is how the light source becomes via the optical fiber supplied light in the condenser first to a parallel Beams of light formed. The parallel light beam from the The condenser is then passed through the light valve and forwarded to the lens, which itself is the real image forms. The real image generated is finally through the field or.
  • Collective lens thrown on the screen.
  • JP-A-3 085 879 An arrangement is also known from JP-A-3 085 879, the adjustment costs of an optical projection unit to reduce positioning.
  • neighboring parts of the picture among a variety of image parts through each optical Projection unit projects while partially overlapping are.
  • the overlapped parts of the image are adjusted electrically, such that the sum of the brightness in relation to the light of neighboring projection units constant and the specific Permeability of a liquid crystal light device of the image part is gradually varied in full white level.
  • This arrangement also includes a variety of individual ones Components.
  • overlaps between adjacent ones are corrected Image parts by means of an electrical setting.
  • JP-A-3 017 615, DE-A-29 24 101 and EP-A-0 349 404, generally show optical arrangements, each one Light valve in the form of a liquid crystal cell to order enlarged display of information on corresponding Show projection surfaces.
  • the invention is based on the object, a method and an arrangement for the optical display of information To make available the simple, compact and prone to failure is inexpensive and also for the viewer a large display of information a bright, provides high-contrast and at the same time homogeneous image.
  • the configuration according to the invention with a few individual Components can be a particularly simple, but at the same time very compact and therefore less sensitive to interference as well as cost-effective method for optical representation of information with multiple projection modules a transparent projection surface in transmitted light projection receive.
  • the inventive configuration not least because of the few individual components a construction that is particularly simple, yet compact Arrangement for the optical display of information a transparent projection surface in transmitted light projection achieve with multiple projection modules.
  • the arrangement as a whole is very susceptible to faults reduced, if not excluded.
  • the arrangement therefore also has a long service life.
  • the projection distance depends on the existing, optically unusable peripheral edge of the Liquid crystal cell, from the opening angle of the light source, for example an optical fiber, and of the desired magnification selected so that the approx. 10% enlarged shadow images from the liquid crystal cells be joined together that the uncontrolled edge surfaces the liquid crystal cells are hidden and the controlled surfaces of the liquid crystal cells on the projection surface to be strung together without gaps.
  • the projection module 1 shows the principle of image expansion to clarify the perspective using projection technology View of a projection module 1.
  • the projection module 1 consists of a light source 2 with a defined radiation characteristic 2 ⁇ for backlighting the information to be displayed.
  • light source 2 exists from a light guide bundle 11 with a radiation characteristic 2 ⁇ of approx. 60 °.
  • the radiation characteristic is 2 ⁇ the effective opening angle of a light guide.
  • the effective opening angle of a light guide results from the half-width of the measured angle-dependent Radiation distribution at the fiber optic output when the fiber optic input is illuminated with a Lambertian spotlight.
  • the light source 2 shines through a liquid crystal cell 3, which has a circumferential contacting edge 12.
  • the Liquid crystal cell 3 acts as a light valve and contains the information to be displayed.
  • the scattering projection surface 4 forms the level of observation, on which the information in shown on an enlarged scale.
  • the projection distance d between the projection surface 4 and the liquid cell 3 depends on the desired magnification factor.
  • FIG. 2 the relationships that must be observed in order to obtain a complete picture of the information to be displayed by means of two projection modules 1 are shown on the basis of two adjacent projection modules 1.
  • the light sources 2 each irradiate a liquid crystal cell 3 with an opening angle of approximately 60 °, each of which has a height H2 and which contain parts of the information to be displayed.
  • the method uses the magnification effect of a shadow projection in the divergent beam path of a light source.
  • the light source 2 used for each individual module 1 must meet this condition, i.e. in addition to those listed Outputs of light guides with halogen spotlights defined radiation pattern can be used.
  • the arranged between the light source 2 and the viewer 15 Projection area 4 must have a scattering area, e.g. a Be a focusing screen.
  • the spreading characteristic can be determined by the Use of thin, white colored glasses or through Foils (opal effect) can be significantly improved. One can this effect by combining a spreading surface with reach a Fresnel lens.
  • the aperture 5 through the inner Inclined of the housing 8 is formed. Because the magnification needed usually less than 10%, can be further optical Aids are dispensed with. A slight blur of the Figure is for viewing from a distance like it are usual for large projections, meaningless.
  • Each projection module 1 is made a central light source unit 9 via flexible light guides 13, which end in polished end pieces 14 and the Form light source 2, fed with light. The light comes out these end pieces 14 at a defined angle 2 ⁇ and shines through the respective light valves, here liquid crystal cells 3 so that on the projection surface 4, which is arranged at a defined distance d from the light valves, from the partial projections of the image parts 6 for the viewer 15 a homogeneous overall picture 7 is created.
  • the individual projection modules 1 are combined in a housing 8.
  • the control the light valves, here the liquid crystal cells 3, takes place via control electronics 10.

Landscapes

  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Business, Economics & Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Holo Graphy (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Claims (13)

  1. Procédé pour la représentation optique d'informations sur une surface de projection transparente (4) par projection en transparence avec plusieurs modules de projection (1), dans lequel une projection lumineuse d'une partie d'image (6) est formée par chaque module de projection (1) sur la surface de projection (4), la lumière provenant d'une source lumineuse (2) avec une caractéristique d'émission définie (2a) étant projetée directement par une diode lumineuse commandée (3) comprenant une information à représenter, formée par une cellule à cristaux liquides, sur la surface de projection (4) située en arrière, les projections lumineuses des parties d'image (6) sur la surface de projection (4) étant réunies les unes aux autres sans discontinuité en formant une image globale réelle (7).
  2. Procédé selon la revendication 1, caractérisé en ce que la distance de projection (d) entre la diode lumineuse commandée (3) et la surface de projection (4) est déterminée en fonction de la diode lumineuse (3) optiquement utilisable, de la caractéristique d'émission (2a) de la source lumineuse (2) et du grossissement souhaité.
  3. Procédé selon la revendication 2, caractérisé en ce que la distance de projection (d) entre la diode lumineuse commandée (3) et la surface de projection (6) correspondante est définie par la relation suivante : d = H1 - H2 2 tanα , où H1 est la hauteur de la surface de projection correspondante (6) et H2 est la hauteur de la diode lumineuse (3) optiquement utilisable.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que les différentes parties d'image (6) sont agrandies au plus de 10 % par leur projection lumineuse correspondante sur la surface de projection (4).
  5. Dispositif pour la représentation optique d'informations sur une surface de projection transparente (4) par projection en transparence avec plusieurs modules de projection (1), en particulier pour l'exécution du procédé selon l'une des revendications précédentes, dans lequel une projection lumineuse d'une partie d'image (6) est formée sur la surface de projection (4) par chaque module de projection (1) et les projections lumineuses des parties d'image (6) peuvent être réunies sur la surface de projection (4) en une image globale réelle (7), caractérisé en ce que chaque module de projection (1) comprend une source lumineuse (2) ayant une caractéristique d'émission définie (2a) et une diode lumineuse commandée (3) comprenant l'une des informations à représenter, formée par une cellule à cristaux liquides, par laquelle la lumière provenant de la source lumineuse (2) est projetable directement sur la surface de projection (4) disposée en arrière, la distance de projection (d) entre la diode lumineuse commandée (3) et la surface de projection (4) étant choisie de sorte que les parties d'image (6) projetées sur la surface de projection (4) par des modules de projection voisins (1) sont réunies sans discontinuité.
  6. Dispositif selon la revendication 5, caractérisé en ce que la source lumineuse (2) est formée par la sortie d'une fibre optique (13).
  7. Dispositif selon la revendication 5, caractérisé en ce que la source lumineuse (2) est formée par un moyen ponctuel d'éclairage halogène.
  8. Dispositif selon l'une des revendications 5 à 7, caractérisé en ce que la diode lumineuse commandée (3) formée par une cellule à cristaux liquides est pilotable par une électronique de commande (10).
  9. Dispositif selon l'une des revendications 5 à 8, caractérisé en ce que la surface de projection (4) est une surface diffusante.
  10. Dispositif selon la revendication 9, caractérisé en ce que la surface diffusante est formée par une feuille ou est constituée d'un verre opalin.
  11. Dispositif selon l'une des revendications 5 à 10, caractérisé en ce que la surface de projection (4) est formée d'une combinaison en sandwich de surfaces diffusantes et de lentilles de Fresnel.
  12. Dispositif selon l'une des revendications 5 à 11, caractérisé en ce qu'un diaphragme (5) est disposé entre la source lumineuse (2) et la diode lumineuse (3) dans le plan de la diode lumineuse (3).
  13. Dispositif selon l'une des revendications 5 à 12, caractérisé en ce que les modules de projection (1) sont agencés en lignes et en colonnes.
EP93114019A 1992-12-23 1993-09-02 Procédure et disposition pour la représentation optique d'informations Expired - Lifetime EP0603465B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4244448A DE4244448C2 (de) 1992-12-23 1992-12-23 Verfahren und Anordnung zur optischen Darstellung von Informationen
DE4244448 1992-12-23

Publications (2)

Publication Number Publication Date
EP0603465A1 EP0603465A1 (fr) 1994-06-29
EP0603465B1 true EP0603465B1 (fr) 1999-04-21

Family

ID=6476769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114019A Expired - Lifetime EP0603465B1 (fr) 1992-12-23 1993-09-02 Procédure et disposition pour la représentation optique d'informations

Country Status (5)

Country Link
US (1) US5664353A (fr)
EP (1) EP0603465B1 (fr)
AT (1) ATE179272T1 (fr)
AU (1) AU671140B2 (fr)
DE (2) DE4244448C2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09159985A (ja) * 1995-12-08 1997-06-20 Mitsubishi Electric Corp 画像表示システム
DE19654440A1 (de) * 1996-12-30 1998-07-02 Mediatec Ges Fuer Multimediale Vorrichtung und Verfahren zur großflächigen Darstellung von Informationen mittels Flüssigkeitskristallanzeigen
JPH10301202A (ja) * 1997-02-28 1998-11-13 R D S Kk マルチプロジェクションシステム
US6247815B1 (en) * 1997-06-16 2001-06-19 Metavision Corporation Work desk with panoramic display
US5902030A (en) * 1998-05-29 1999-05-11 Blanchard; Randall D. System for displaying images from multiple projectors onto a common screen
KR100629757B1 (ko) * 2005-04-19 2006-09-29 심기섭 광학영상을 이용한 광고장치
US7334901B2 (en) * 2005-04-22 2008-02-26 Ostendo Technologies, Inc. Low profile, large screen display using a rear projection array system
US9902644B2 (en) 2014-06-19 2018-02-27 Corning Incorporated Aluminosilicate glasses
CN108074509B (zh) * 2018-01-25 2020-08-14 台州市皓仔邦工业设计有限公司 定向旋转偏光反射广告改进装置及其控制方法

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FR2471012A1 (fr) * 1979-12-07 1981-06-12 Commissariat Energie Atomique Dispositif d'eclairage pour grand ecran
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JPS60203915A (ja) * 1984-03-28 1985-10-15 Matsushita Electric Ind Co Ltd 大型液晶デイスプレイ
FR2607301B1 (fr) * 1986-11-25 1990-11-30 Matra Dispositif d'affichage modulaire a cristaux liquides
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Also Published As

Publication number Publication date
ATE179272T1 (de) 1999-05-15
DE4244448C2 (de) 1995-04-13
US5664353A (en) 1997-09-09
AU4624693A (en) 1994-07-07
EP0603465A1 (fr) 1994-06-29
DE4244448A1 (de) 1994-07-07
AU671140B2 (en) 1996-08-15
DE59309529D1 (de) 1999-05-27

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