EP0603465A1 - Method and device for optical presentation of information - Google Patents

Method and device for optical presentation of information Download PDF

Info

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)
French (fr)
Other versions
EP0603465B1 (en
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/en
Application granted granted Critical
Publication of EP0603465B1 publication Critical patent/EP0603465B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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.

Landscapes

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

Abstract

The invention relates to a method and a device for optical presentation of information by means of a plurality of projection modules on a transparent projection surface using transmitted-light projection. The object, to develop a method and an arrangement of the generic kind which is cost-advantageous and ensures a bright, high-contrast, homogeneous image for the viewer, is solved in that each projection module consists of a light source which has a divergent beam path and transilluminates a controllable light valve, and, arranged behind it, the projection surface. The distance between the light valve and the projection surface is selected such that the part images of neighbouring modules, which are projected onto the projection surface, border each other without gaps. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Verfahren und eine Anordnung zur optischen Darstellung von Informationen gemäß dem Oberbegriff des Anspruches 1.The invention relates to a method and an arrangement for the optical representation of information according to the preamble of claim 1.

Die großflächige Darstellung von Informationen erfolgt in bekannter Weise durch die normale Projektion mittels eines Overhead-Projektors. Die Intensität der direkten Beleuchtung muß wegen des erforderlichen Vergrößerungsverhältnisses sehr groß sein. Es entstehen Probleme bei der Langzeitstabilität und der Lebensdauer.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.

Der Stand der Entwicklung von Flüssigkristall-Anzeigen erlaubt es, großflächige Anzeigepaneele auch durch die matrixförmige Aneinanderreihung von kleinen Flüssigkristall-Anzeigen aufzubauen. In diesem Falle begrenzen die Abstände zwischen den einzelnen Anzeigen die Auflösung des Displays. Die optisch nicht nutzbaren Flächen ergeben sich aus der Breite des Hermetisierungsrahmens der Einzelelemente und der Breite der elektrischen Kontaktierung.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.

In der gattungsfremden DE 30 40 551 A1 wird vorgeschlagen, durch Hilfsmontagen diese Flächen teilweise zu verkleinern. Dazu werden die Tragplatten der einzelnen Flüssigkristall-Anzeigeeinheiten nur auf den Seiten, an denen sich keine Nachbar-Anzeigeeinheiten anschließen, durch eine Harzdichtung verbunden. Die Anzeigeelektroden benachbarter Anzeigeeinheiten können dicht aneinandergerückt werden.In the non-generic DE 30 40 551 A1 it is proposed to partially reduce these areas by auxiliary assemblies. For this purpose, 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.

In der ebenfalls gattungsfremden DE-40 04 739 A1 wird ein optisches System zur stereoskopischen Darstellung von Informationen mit einem optischen Element mit Linsenfunktion, einer Lichtquelle und mit einem zumindestens teilweise transparenten flächenförmigen Informationsträger beschrieben, bei welchem auf der dem Betrachter gegenüberliegenden Seite des optischen Elementes zwei Lichtquellen angeordnet sind und bei dem sich der Informationsträger im Bereich der Aperturblende des optischen Elementes befindet. Bei diesem System entsteht das Bild im Auge des Betrachters, es wird keine Projektionsfläche zur Abbildung benötigt. Die Vermeidung von optisch nicht nutzbaren Zonen wird nicht angestrebt.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. With this system, the image is created in the eye of the beholder, no projection surface is required for the image. The aim is not to avoid optically usable zones.

Der Erfindung liegt von daher die Aufgabe zugrunde, ein Verfahren und eine Anordnung zur optischen Darstellung von Informationen zu entwickeln, welches kostengünstig ist und das für den Betrachter auch bei der großflächigen Darstellung von Informationen ein helles, kontrastreiches, homogenes Bild gewährleistet.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.

Die Lösung dieser Aufgabe ergibt sich aus den kennzeichnenden Merkmalen der Ansprüche 1 und 3.The solution to this problem results from the characterizing features of claims 1 and 3.

Durch die Ausnutzung des Vergrößerungseffektes einer Schattenprojektion im divergenten Strahlengang einer Lichtquelle wird erreicht, daß die reellen Bildteile, die pro Projektionsmodul auf einer Projektionsfläche entstehen, derart aneinandergefügt werden, daß ein lückenloses Gesamtbild auf der Projektionsfläche entsteht. Der Abstand zwischen einem Lichtventil, beispielsweise einer Flüssigkristallzelle, und der Pojektionsfläche, der Projektionsabstand, wird in Abhängigkeit vom vorhandenen, optisch nicht nutzbaren umlaufenden Rand der Flüssigkristallzelle, vom Öffnungswinkel der Lichtquelle, beispielsweise eines Lichtwellenleiters, und von der gewünschten Vergrößerung so gewählt, daß die um ca. 10% vergrößerten Schattenbilder aus den Flüssigkristallzellen so aneinandergefügt werden, daß die nicht angesteuerten Randflächen der Flüssigkristallzellen ausgeblendet und die angesteuerten Flächen der Flüssigkristallzellen auf der Projektionsfläche lückenlos aneinandergereiht werden. Da die benötigte Vergrößerung in der Regel kleiner als 10% ist, kann auf weitere optische Hilfsmittel verzichtet werden. Eine geringfügige Unschärfe der Abbildung ist für die Betrachtung aus Entfernungen, wie sie für Großprojektionen üblich sind, bedeutungslos. Es wird ein kompaktes und kostengünstiges Projektionssystem für die großflächige Informationsdarstellung auf der Basis von Flüssigkristallzellen erzielt, mit dem auf einer streuenden Projektionsfläche ein homogenes reelles Bild erzeugt werden kann, bei dem die Modulbegrenzungen nicht sichtbar sind.By utilizing the magnification effect of a shadow projection in the divergent beam path of a light source, it is achieved that the real parts of the image that are created for each projection module on a projection surface are joined together in such a way that a complete image is created on the projection surface. The distance between a light valve, for example a liquid crystal cell, and the projection surface, 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. 10% enlarged shadow images from the liquid crystal cells are joined together in such a way that the uncontrolled peripheral surfaces of the liquid crystal cells are hidden and the controlled surfaces of the liquid crystal cells are strung together without gaps on the projection surface. Since the required magnification is generally less than 10%, there is no need for further optical aids. A slight blurring of the image is irrelevant for viewing from a distance as is usual for large projections. A compact and inexpensive projection system for the large-scale information display based on liquid crystal cells is achieved, with which a homogeneous real image can be generated on a scattering projection surface, in which the module boundaries are not visible.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the invention result itself from the subclaims.

Die Erfindung ist nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles einer Anordnung zur optischen Darstellung von Informationen näher erläutert. Es zeigen:

Fig. 1
die schematische perspektivische Ansicht eines Projektionsmoduls,
Fig. 2
die schematische Seitenansicht zweier benachbarter Projektionsmodule und
Fig. 3
die schematische Seitenansicht einer Anordnung mit mehreren Projektionsmodulen.
The invention is explained in more detail below with reference to an embodiment of an arrangement for the optical representation of information shown in the drawings. Show it:
Fig. 1
the schematic perspective view of a projection module,
Fig. 2
the schematic side view of two adjacent projection modules and
Fig. 3
the schematic side view of an arrangement with several projection modules.

Die Fig. 1 zeigt zur Verdeutlichung des Prinzips der Bildaufweitung mittels Projektionstechnik die perspektivische Ansicht eines Projektionsmodules 1. Das Projektionsmodul 1 besteht aus einer Lichtquelle 2 mit definierter Abstrahlcharakteristik 2α zur Hinterleuchtung der darzustellenden Information. Im vorliegenden Beispiel besteht die Lichtquelle 2 aus einem Lichtleiterbündel 11 mit einer Abstrahlcharakteristik 2α von ca. 60°. Als Abstrahlcharakteristik 2α wird der effektive Öffnungswinkel eines Lichtleiters bezeichnet. Der effektive Öffnungswinkel eines Lichtleiters ergibt sich aus der Halbwertsbreite der gemessenen winkelabhängigen Strahlungsverteilung am Lichtleiterausgang, wenn der Lichtleitereingang mit einem Lambert'schen Strahler beleuchtet wird. Die Lichtquelle 2 durchstrahlt eine Flüssigkristallzelle 3, welche einen umlaufenden Kontaktierungsrand 12 aufweist. Die Flüssigkristallzelle 3 wirkt als Lichtventil und enthält die darzustellende Information. Die streuende Projektionsfläche 4 bildet die Betrachtungsebene, auf ihr wird die Information in vergrößertem Maßstab abgebildet. Der Projektionsabstand d zwischen der Projektionsfläche 4 und der Flüssigkeitszelle 3 hängt von dem gewünschten Vergrößerungsfaktor ab.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 2α for backlighting the information to be displayed. In the present example, the light source 2 consists of an optical fiber bundle 11 with a radiation characteristic 2α of approximately 60 °. The effective opening angle of a light guide is referred to as the radiation characteristic 2α. 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.

In der Fig. 2 werden anhand von zwei benachbarten Projektionsmodulen 1 die Zusammenhänge aufgezeigt, die beachtet werden müssen, um mittels mehrerer Projektionsmodule 1 ein lückenloses Gesamtbild einer darzustellenen Information zu bekommen. Die Lichtquellen 2 durchstrahlen jeweils mit einem Öffnungswinkel von ca. 60° jeweils eine Flüssigkristallzelle 3, die jeweils eine Höhe H2 aufweisen und welche Teile der darzustellenden Information enthalten. Wenn eine ca. 10%ige Vergrößerung des Bidlteiles 6 auf der Projektionsfläche 4 erzielt werden soll und wenn beide Bildteile 6 jeder Flüssigkristallzelle 3 lückenlos aneinandergefügt sein sollen, dann muß der Abstand d zwischen den Flüssigkristallzellen 3 und der Projektionsfläche 4 mit der jeweiligen Höhe H1 nach folgender Beziehung gewählt werden:

Figure imgb0001

wobei H1 = 1,1 x H2, 2α = 60° gewählt sind. In der Praxis hat sich ein Projektionsabstand d von ca. 5 mm bewährt.In 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. If an approximately 10% enlargement of the image part 6 is to be achieved on the projection surface 4 and if both image parts 6 of each liquid crystal cell 3 are to be joined together without gaps, then the distance d between the liquid crystal cells 3 and the projection surface 4 with the respective height H1 must be increased following relationship can be chosen:
Figure imgb0001
where H1 = 1.1 x H2, 2α = 60 ° are selected. In practice, a projection distance d of approx. 5 mm has proven itself.

Das Verfahren nutzt den Vergrößerungseffekt einer Schattenprojektion im divergenten Strahlengang einer Lichtquelle aus. Die für jedes Einzelmodul 1 eingesetzte Lichtquelle 2 muß diese Bedingung erfüllen, d.h. es können neben den angeführten Ausgängen von Lichtleitern auch Halogenpunktstrahler mit definierter Abstrahlcharakteristik verwendet werden. Die zwischen der Lichtquelle 2 und dem Betrachter 15 angeordnete Projektionsfläche 4 muß eine streuende Fläche , z.B. eine Mattscheibe sein. Die Streucharakteristik kann durch die Verwendung von dünnen, weiß eingefärbten Gläsern oder durch Folien (Opaleffekt) wesentlich verbessert werden. Man kann diesen Effekt auch durch die Kombination einer Streufläche mit einer Fresnel'schen Stufenlinse erreichen. Um die Strahlengänge benachbarter Module 1 zu entkoppeln ist es günstig, jeweils eine Blende 5 in der Ebene des Ansteuerelementes, hier der Flüssigkristallzellen 3, anzuordnen. In der Fig.3 wird die Blende 5 durch die innere Schräge des Gehäuses 8 gebildet. Da die benötigte Vergrößerung in der Regel unter 10% liegt, kann auf weitere optische Hilfsmittel verzichtet werden. Eine geringfügige Unschärfe der Abbildung ist für die Betrachtung aus Entfernungen, wie sie für Großprojektionen üblich sind, bedeutungslos.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. In order to decouple the beam paths of adjacent modules 1, it is expedient to arrange an aperture 5 in each case in the plane of the control element, here the liquid crystal cells 3. In Figure 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.

In der Fig. 3 ist eine Anordnung mit vier Projektionsmodulen 1 dargestellt, wie sie für eine großflächige Darstellung von Informationen benötigt wird. Jedes Projektionsmodul 1 wird aus einer zentralen Lichtquelleneinheit 9 über flexible Lichtleiter 13, welche in polierten Endstücken 14 münden und die Lichtquelle 2 bilden, mit Licht gespeist. Das Licht tritt aus diesen Endstücken 14 in einem definierten Winkel 2α aus und durchstrahlt die jeweiligen Lichtventile, hier Flüssigkristallzellen 3 so, daß auf der Projektionsfläche 4, welche im definierten Abstand d von den Lichtventilen angeordnet ist, aus den Teilprojektionen der Bildteile 6 für den Betrachter 15 ein homogenes Gesamtbild 7 entsteht. Die einzelnen Projektionsmodule 1 sind in einem Gehäuse 8 zusammengefaßt. Die Ansteuerung der Lichtventile, hier der Flüssigkristallzellen 3, erfolgt über eine Steuerelektronik 10.3 shows an arrangement with four projection modules 1, as is required for a large-area display of information. 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 2α 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.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

11
ProjektionsmodulProjection module
22nd
LichtquelleLight source
33rd
Lichtventil (Flüssigkristallzelle)Light valve (liquid crystal cell)
44th
ProjektionsflächeProjection surface
55
Blendecover
66
BildteilPart of the picture
77
GesamtbildOverall picture
88th
Gehäusecasing
99
LichtquelleneinheitLight source unit
1010th
SteuerelektronikControl electronics
1111
LichtleiterbündelOptical fiber bundle
1212th
KontaktierungsrandContact edge
1313
LichtleiterLight guide
1414
EndstückTail
1515
BetrachterViewer
dd
ProjektionsabstandProjection distance
2α2α
Abstrahlcharakteristik/ÖffnungswinkelBeam pattern / opening angle
H1H1
Höhe des vergrößerten BildteilesHeight of the enlarged part of the picture
H2H2
Höhe des zu vergrößernden BildteilesHeight of the part of the image to be enlarged

Claims (12)

Verfahren zur optischen Darstellung von Informationen mit mehreren Projektionsmodulen auf einer transparenten Projektionsfläche in Durchlichtprojektion,
dadurch gekennzeichnet,
daß von jedem der Projektionsmodule (1) eine Schattenprojektion eines Bildteiles (6) auf der Projektionsfläche (4) erzeugt wird, und daß die Schattenprojektionen der Bildteile (6) auf der Projektionsfläche (4) lückenlos zu einem reelen Gesamtbild (7) aneinander gefügt werden.Method for the optical representation of information with several projection modules on a transparent projection surface in transmitted light projection,
characterized,
that each of the projection modules (1) produces a shadow projection of an image part (6) on the projection surface (4), and that the shadow projections of the image parts (6) on the projection surface (4) are seamlessly joined together to form a real overall image (7) . Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die jeweiligen Bildteile (6) über ihre jeweilige Schattenprojektion auf der Projektionsfläche (4) bis zu 10% vergrößert werden.Method according to Claim 1, characterized in that the respective image parts (6) are enlarged by up to 10% via their respective shadow projection on the projection surface (4). Anordnung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß jedes Projektionsmodul (1) aus einer Lichtquelle (2) mit divergentem Strahlengang, welche ein steuerbares Lichtventil (3) durchstrahlt und der dahinter angeordneten Projektionsfläche (4) besteht, wobei der Abstand (d) zwischen dem Lichtventil (3) und der Projektionsfläche (4) so gewählt ist, daß die auf der Projektionsfläche (4) projizierten Bildteile (6) benachbarter Module (1) lückenlos aneinander grenzen.Arrangement for carrying out the method according to claim 1, characterized in that each projection module (1) consists of a light source (2) with a divergent beam path, which shines through a controllable light valve (3) and the projection surface (4) arranged behind it, the distance ( d) between the light valve (3) and the projection surface (4) is selected such that the image parts (6) of adjacent modules (1) projected on the projection surface (4) border one another without gaps. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß die Lichtquelle (2) der Ausgang eines Lichtwellenleiters ist.Arrangement according to claim 3, characterized in that the light source (2) is the output of an optical waveguide. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß die Lichtquelle (2) ein Halogenpunktstrahler ist.Arrangement according to claim 3, characterized in that the light source (2) is a halogen spotlight. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß das steuerbare Lichtventil (3) eine Flüssigkristallzelle ist.Arrangement according to claim 3, characterized in that the controllable light valve (3) is a liquid crystal cell. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß die Projektionsfläche (4) eine Streufläche ist.Arrangement according to claim 3, characterized in that the projection surface (4) is a scattering surface. Anordnung nach Anspruch 7, dadurch gekennzeichnet, daß die Streufläche aus einer Folie gebildet ist.Arrangement according to claim 7, characterized in that the scattering surface is formed from a film. Anordnung nach Anspruch 7, dadurch gekennzeichnet, daß die Streufläche aus Opalglas besteht.Arrangement according to claim 7, characterized in that the scattering surface consists of opal glass. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß die Projektionsfläche (4) aus einer Sandwichkombination von Streuflächen und Fresnellinsen besteht.Arrangement according to claim 3, characterized in that the projection surface (4) consists of a sandwich combination of scattering surfaces and Fresnel lenses. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß zwischen der Lichtquelle (2) und dem Lichtventil (3) in der Ebene des Lichtventils (3) eine Blende (5) angeordnet ist.Arrangement according to claim 3, characterized in that a diaphragm (5) is arranged between the light source (2) and the light valve (3) in the plane of the light valve (3). Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß die Projektionsmodule (1) in Zeilen und Spalten angeordnet sind.Arrangement according to claim 3, characterized in that the projection modules (1) are arranged in rows and columns.
EP93114019A 1992-12-23 1993-09-02 Method and device for optical presentation of information Expired - Lifetime EP0603465B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4244448 1992-12-23
DE4244448A DE4244448C2 (en) 1992-12-23 1992-12-23 Method and arrangement for the optical representation of information

Publications (2)

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

Family

ID=6476769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114019A Expired - Lifetime EP0603465B1 (en) 1992-12-23 1993-09-02 Method and device for optical presentation of information

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19654440A1 (en) * 1996-12-30 1998-07-02 Mediatec Ges Fuer Multimediale Device and method for the large-scale display of information by means of liquid crystal displays

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09159985A (en) * 1995-12-08 1997-06-20 Mitsubishi Electric Corp Picture display system
JPH10301202A (en) * 1997-02-28 1998-11-13 R D S Kk Multiprojection system
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 (en) * 2005-04-19 2006-09-29 심기섭 Advertisement apparatus using optic image
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 (en) * 2018-01-25 2020-08-14 台州市皓仔邦工业设计有限公司 Directional rotating polarized light reflection advertisement improvement device and control method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924101A1 (en) * 1978-06-29 1980-01-10 Michael Stolov MULTICOLOR IMAGE PROJECTION SYSTEM
FR2607301A1 (en) * 1986-11-25 1988-05-27 Matra Modular, liquid crystal display device
EP0349404A1 (en) * 1988-06-28 1990-01-03 France Telecom Gigantic liquid crystal display
JPH0317615A (en) * 1989-06-14 1991-01-25 Seiko Instr Inc Overhead projector for ordinary paper
JPH0385879A (en) * 1989-08-29 1991-04-11 Seiko Epson Corp Projection type display device

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE509684A (en) *
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 (en) * 1979-12-07 1981-06-12 Commissariat Energie Atomique LIGHTING DEVICE FOR LARGE SCREEN
DE8124380U1 (en) * 1981-08-20 1983-03-24 Siemens AG, 1000 Berlin und 8000 München INTERCHANGEABLE DISPLAY DEVICE, IN PARTICULAR FOR TRAFFIC SIGNAL INDICATORS
JPS60203915A (en) * 1984-03-28 1985-10-15 Matsushita Electric Ind Co Ltd Large-sized liquid crystal display device
US4954935A (en) * 1989-02-08 1990-09-04 Holophane Company, Inc. Lighting system for illuminating billboards and the like
JP2898673B2 (en) * 1989-05-10 1999-06-02 株式会社日立製作所 Multi-screen projector and projector device
DE4004739A1 (en) * 1990-02-15 1991-08-22 Holtronic Gmbh Optical system for stereoscopic information display - uses left and right hand light sources activated in alternation for illuminating display

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924101A1 (en) * 1978-06-29 1980-01-10 Michael Stolov MULTICOLOR IMAGE PROJECTION SYSTEM
FR2607301A1 (en) * 1986-11-25 1988-05-27 Matra Modular, liquid crystal display device
EP0349404A1 (en) * 1988-06-28 1990-01-03 France Telecom Gigantic liquid crystal display
JPH0317615A (en) * 1989-06-14 1991-01-25 Seiko Instr Inc Overhead projector for ordinary paper
JPH0385879A (en) * 1989-08-29 1991-04-11 Seiko Epson Corp Projection type display device

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 (en) * 1996-12-30 1998-07-02 Mediatec Ges Fuer Multimediale Device and method for the large-scale display of information by means of liquid crystal displays

Also Published As

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

Similar Documents

Publication Publication Date Title
DE69906512T2 (en) PROJECTION DISPLAY DEVICE
DE69724411T3 (en) LIGHTING DEVICE AND DISPLAY WHICH IT USES
JP2815910B2 (en) Projection image display device
DE112017000008B4 (en) STEREOSCOPIC DISPLAY DEVICE
DE102006055327B4 (en) A light guide, parallax barrier, and three-dimensional image display device, and image forming method using the same
EP1695562A1 (en) Multi-user autostereoscopic display with position tracking
DE112018002005T5 (en) Image display device
EP0309528A1 (en) Stereoscopic display system.
WO2009156130A1 (en) Projection system
EP1018101B1 (en) Flat display screen
DE4244448C2 (en) Method and arrangement for the optical representation of information
DE112017001785T5 (en) Head-up display
DE112019002950T5 (en) Display device and head-up display device
DE102018200873A1 (en) Autostereoscopic field of view display device for a vehicle, vehicle with an autostereoscopic field of view display device and method for generating an autostereoscopic image
EP0010796B1 (en) Display device consisting of an electrooptical liquid cell
DE69929622T2 (en) PROJECTION SYSTEM
DE10157605C1 (en) Image-projection arrangement, e.g. for vehicle display, incorporates combiner, reflux surface mirrors, concave mirrors, display and screen
DE112020005892T5 (en) ELECTRONIC DEVICE
DE19809506A1 (en) Real image viewfinder for photographic or video camera
WO1997044696A1 (en) Head-mounted display
AT390851B (en) DEVICE FOR THE PRESENTATION OF INFORMATION, DISPLAYS, NOTES ETC.
DE112020004339T5 (en) LIGHT SOURCE DEVICE AND INFORMATION DISPLAY SYSTEM USING THE SAME
DE19907345B4 (en) Device for displaying an image that can be represented as a raster of pixels on a screen
DE2809067C2 (en)
CH696216A5 (en) Line illumination.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19940725

17Q First examination report despatched

Effective date: 19950831

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MAN SYSTEMELEKTRONIK GMBH

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990421

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19990421

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990421

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990421

REF Corresponds to:

Ref document number: 179272

Country of ref document: AT

Date of ref document: 19990515

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: MICHELI & CIE INGENIEURS-CONSEILS

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 59309529

Country of ref document: DE

Date of ref document: 19990527

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19990629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990721

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990721

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: MAN SYSTEMELEKTRONIK GMBH TRANSFER- VOSSLOH MAN SY

Ref country code: CH

Ref legal event code: NV

Representative=s name: TROESCH SCHEIDEGGER WERNER AG

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: VOSSLOH MAN SYSTEMELEKTRONIK GMBH

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990902

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991206

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

BERE Be: lapsed

Owner name: MAN SYSTEMELEKTRONIK G.M.B.H.

Effective date: 19990930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000331

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: VOSSLOH MAN SYSTEMELEKTRONIK GMBH TRANSFER- VOSSLOH SYSTEMELEKTRONIK GMBH

NLT1 Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1

Owner name: VOSSLOH SYSTEMELEKTRONIK GMBH

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20080923

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20080922

Year of fee payment: 16

Ref country code: FR

Payment date: 20080917

Year of fee payment: 16

Ref country code: AT

Payment date: 20080919

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080922

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080826

Year of fee payment: 16

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20100401

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090902

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090902

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100401

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090930

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090902