EP0603465A1 - 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
EP0603465A1
EP0603465A1 EP93114019A EP93114019A EP0603465A1 EP 0603465 A1 EP0603465 A1 EP 0603465A1 EP 93114019 A EP93114019 A EP 93114019A EP 93114019 A EP93114019 A EP 93114019A EP 0603465 A1 EP0603465 A1 EP 0603465A1
Authority
EP
European Patent Office
Prior art keywords
projection
projection surface
arrangement according
light source
modules
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.)
Granted
Application number
EP93114019A
Other languages
German (de)
English (en)
Other versions
EP0603465B1 (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
Krone 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 Krone GmbH filed Critical Krone 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 and an arrangement for the optical representation of information according to the preamble of claim 1.
  • the large-scale display of information takes place in a known manner by normal projection using an overhead projector.
  • the intensity of the direct lighting must be very high because of the required magnification ratio. There are problems with long-term stability and durability.
  • the state of development of liquid crystal displays allows It is also possible to build up large-area display panels through the matrix-like arrangement of small liquid crystal displays. In this case, the distances between the individual displays limit the resolution of the display.
  • the optically unusable areas result from the width of the hermetic frame of the individual elements and the width of the electrical contact.
  • the support plates of the individual liquid crystal display units are connected by a resin seal only on the sides to which no neighboring display units are connected.
  • the display electrodes of adjacent display units can be moved close together.
  • DE-40 04 739 A1 also of a non-generic type, describes an optical system for the stereoscopic display of information with an optical element with a lens function, a light source and with an at least partially transparent sheet-like information carrier, in which two are on the side of the optical element opposite the viewer Light sources are arranged and in which the information carrier is located in the area of the aperture diaphragm of the optical element.
  • the invention is therefore based on the object of developing a method and an arrangement for the optical display of information which is inexpensive and which also provides the viewer with a bright, high-contrast, homogeneous image when displaying information over a large area guaranteed.
  • a light valve for example a liquid crystal cell
  • the projection distance is selected as a function of the existing, optically unusable peripheral edge of the liquid crystal cell, the opening angle of the light source, for example an optical waveguide, and the desired magnification such that the by approx.
  • the projection module 1 shows the perspective view of a projection module 1 to illustrate the principle of image expansion by means of projection technology.
  • the projection module 1 consists of a light source 2 with a defined emission characteristic 2 ⁇ for backlighting the information to be displayed.
  • the light source 2 consists of an optical fiber bundle 11 with a radiation characteristic 2 ⁇ of approximately 60 °.
  • the effective opening angle of a light guide is referred to as the radiation characteristic 2 ⁇ .
  • the effective opening angle of a light guide results from the full width at half maximum of the measured angle-dependent radiation distribution at the light guide output if the light guide input is illuminated with a Lambertian lamp.
  • the light source 2 shines through a liquid crystal cell 3 which has a peripheral contact 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 viewing plane, 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 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, ie, in addition to the outputs of light guides mentioned, halogen spotlights with defined radiation characteristics can also be used.
  • the projection surface 4 arranged between the light source 2 and the viewer 15 must be a scattering surface, for example a Be a focusing screen.
  • the scatter characteristics can be significantly improved by using thin, white-colored glasses or by foils (opal effect). This effect can also be achieved by combining a diffusing surface with a Fresnel lens.
  • an aperture 5 in each case in the plane of the control element, here the liquid crystal cells 3.
  • the aperture 5 is formed by the inner slope of the housing 8. Since the required magnification is usually below 10%, there is no need for other optical aids. A slight blurring of the image is irrelevant for viewing from a distance as is usual for large projections.
  • Each projection module 1 is supplied with light from a central light source unit 9 via flexible light guides 13, which open into polished end pieces 14 and form the light source 2.
  • the light emerges from 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 of the light valves, here the liquid crystal cells 3, takes place via control electronics 10.
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
DE4244448 1992-12-23
DE4244448A DE4244448C2 (de) 1992-12-23 1992-12-23 Verfahren und Anordnung zur optischen Darstellung von Informationen

Publications (2)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19654440A1 (de) * 1996-12-30 1998-07-02 Mediatec Ges Fuer Multimediale Vorrichtung und Verfahren zur großflächigen Darstellung von Informationen mittels Flüssigkeitskristallanzeigen

Families Citing this family (8)

* 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
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924101A1 (de) * 1978-06-29 1980-01-10 Michael Stolov Vielfarben-bildprojektions-system
FR2607301A1 (fr) * 1986-11-25 1988-05-27 Matra Dispositif d'affichage modulaire a cristaux liquides
EP0349404A1 (fr) * 1988-06-28 1990-01-03 France Telecom Dispositif d'affichage géant à cristaux liquides
JPH0317615A (ja) * 1989-06-14 1991-01-25 Seiko Instr Inc 普通紙用オーバーヘットプロジェクター
JPH0385879A (ja) * 1989-08-29 1991-04-11 Seiko Epson Corp 投射型表示装置

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
BE509684A (fr) *
US1065845A (en) * 1910-10-24 1913-06-24 Fernand Sauvage Optical indicating apparatus.
US3020798A (en) * 1957-09-17 1962-02-13 Charles M Chrisman Projection advertising
US3198066A (en) * 1962-03-01 1965-08-03 Clarence L Mcghee Outdoor advertising device including projection means
US3796484A (en) * 1971-08-20 1974-03-12 Holograph Corp Optical communication system providing selective image presentations
US4116553A (en) * 1977-01-21 1978-09-26 Cohen Norman E Display method and apparatus
US4257041A (en) * 1978-06-19 1981-03-17 Izon Corporation Electro optical display device
IL55032A (en) * 1978-06-29 1984-05-31 Stolov Michael Color picture display system including electronically controlled slides
JPS5664315A (en) * 1979-10-29 1981-06-01 Sharp Corp Production of liquid crystal display panel
FR2471012A1 (fr) * 1979-12-07 1981-06-12 Commissariat Energie Atomique Dispositif d'eclairage pour grand ecran
DE8124380U1 (de) * 1981-08-20 1983-03-24 Siemens AG, 1000 Berlin und 8000 München Wechselanzeigeeinrichtung, insbesondere fuer verkehrssignalanzeigen
JPS60203915A (ja) * 1984-03-28 1985-10-15 Matsushita Electric Ind Co Ltd 大型液晶デイスプレイ
US4954935A (en) * 1989-02-08 1990-09-04 Holophane Company, Inc. Lighting system for illuminating billboards and the like
JP2898673B2 (ja) * 1989-05-10 1999-06-02 株式会社日立製作所 マルチスクリーンプロジェクタ及びプロジェクタ装置
DE4004739A1 (de) * 1990-02-15 1991-08-22 Holtronic Gmbh Optisches system zur stereoskopischen darstellung von informationen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924101A1 (de) * 1978-06-29 1980-01-10 Michael Stolov Vielfarben-bildprojektions-system
FR2607301A1 (fr) * 1986-11-25 1988-05-27 Matra Dispositif d'affichage modulaire a cristaux liquides
EP0349404A1 (fr) * 1988-06-28 1990-01-03 France Telecom Dispositif d'affichage géant à cristaux liquides
JPH0317615A (ja) * 1989-06-14 1991-01-25 Seiko Instr Inc 普通紙用オーバーヘットプロジェクター
JPH0385879A (ja) * 1989-08-29 1991-04-11 Seiko Epson Corp 投射型表示装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 15, no. 140 (P - 1188) 9 April 1991 (1991-04-09) *
PATENT ABSTRACTS OF JAPAN vol. 15, no. 261 (E - 1085) 3 July 1991 (1991-07-03) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19654440A1 (de) * 1996-12-30 1998-07-02 Mediatec Ges Fuer Multimediale Vorrichtung und Verfahren zur großflächigen Darstellung von Informationen mittels Flüssigkeitskristallanzeigen

Also Published As

Publication number Publication date
ATE179272T1 (de) 1999-05-15
DE59309529D1 (de) 1999-05-27
DE4244448A1 (de) 1994-07-07
EP0603465B1 (fr) 1999-04-21
DE4244448C2 (de) 1995-04-13
AU4624693A (en) 1994-07-07
US5664353A (en) 1997-09-09
AU671140B2 (en) 1996-08-15

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