WO1985003397A2 - Optical fibre picture screen - Google Patents
Optical fibre picture screen Download PDFInfo
- Publication number
- WO1985003397A2 WO1985003397A2 PCT/DE1985/000024 DE8500024W WO8503397A2 WO 1985003397 A2 WO1985003397 A2 WO 1985003397A2 DE 8500024 W DE8500024 W DE 8500024W WO 8503397 A2 WO8503397 A2 WO 8503397A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- optical fiber
- optical fibers
- flat screen
- ring
- Prior art date
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 30
- 239000000835 fiber Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004990 Smectic liquid crystal Substances 0.000 description 1
- 241000838698 Togo Species 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
Definitions
- the invention relates to an optical fiber flat screen.
- the object of the invention is to make it possible to use highly efficient semiconductor diode lasers of small design in the infrared range for optical fiber flat screens.
- a light valve designed as a thin-walled hollow cylinder, is placed directly in front of the light entry ends of the optical fibers.
- the modulated infrared diode laser beam creates a fine grid of transparent and non-transparent zones in accordance with the image content in the light valve.
- a projection lamp radiates visible light through the light valve into the optical fibers, which can be provided with color filters at the exit end for the purpose of displaying colors.
- Smectic liquid crystals or iron garnet are suitable as light valve materials whose transparency for visible light can be surface-modulated by focused infrared laser light.
- the transparency of a light valve ring arranged before the lig inlet ends is superficially modulated by means of a laser beam deviated by a rotating mirror.
- the fanned out light exit ends of an optical fiber bundle, the densely packed light entry ends of which are never arranged on a screw are illuminated by a projection lamp, form a flat screen.
- D Transparency of a light valve ring placed in front of the light entry ends is surface-modulated by a laser beam deflected by means of a rotating mirror. ONLY FOR INFORMATION
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The light outlet spread out ends of an optical fibre bundle of which the close light inlet ends arranged on a helical line are eliminated by a projection lamp, form a flat screen. The transparency of a light valve ring arranged before the light inlet ends is superficially modulated by means of a laser beam deviated by a rotating mirror.
Description
LichtleitfaserbildschirmOptical fiber screen
Die Erfindung betrifft einen Lichtleitfaserflachbildschirm.The invention relates to an optical fiber flat screen.
Bildschirme, deren flache Bauweise dadurch möglch wird, daß durch einen Drehspiegel in die dichtgepackten Eintrittsenden eines Lichtleitfaserbündels positioniertes Laserlicht die Fasern durchläuft und bei Austritt aus den aufgefächerten Lichtaustrittsenden des Faserbündels das gewünschte Bild erzeugt, sind bekannt als US-Patent 4085420.Screens, the flat design of which is made possible by the fact that a rotating light positioned in the densely packed inlet ends of an optical fiber bundle passes through the fibers and generates the desired image as they emerge from the fanned light outlet ends of the fiber bundle, are known as US Pat. No. 4,085,420.
Die Anwendung von Flachbildschirmen der beschriebenen Art ist auf Großbildanwendungen beschränkt, weil die dafür geeigneten Argon-Ionen-Laser unhandlich und teuer sind und einen geringen Wirkungsgrad haben.The use of flat screens of the type described is limited to large-screen applications because the argon-ion lasers that are suitable for them are bulky and expensive and have a low efficiency.
Aufgabe der Erfindung ist es, für Lichtleitfaserflachbildschirme den Einsatz hocheffizienter Halbleiterdiodenlaser kleiner Bauart im Infrarotbereich möglich zu machen.The object of the invention is to make it possible to use highly efficient semiconductor diode lasers of small design in the infrared range for optical fiber flat screens.
Das wird dadurch erreicht, daß ein Lichtventil, als dünnwandiger Hohlzylinder ausgebildet, direkt vor den Lichteintritttsenden der Lichtleitfasern plaziert wird. Der modulierte Infrarotdiodenlaserstrahl erzeugt entsprechend dem Bildinhalt in dem Lichtventil ein feines Raster transparenter und nichttransparenter Zonen.This is achieved in that a light valve, designed as a thin-walled hollow cylinder, is placed directly in front of the light entry ends of the optical fibers. The modulated infrared diode laser beam creates a fine grid of transparent and non-transparent zones in accordance with the image content in the light valve.
Eine Projektionslampe strahlt sichtbares Licht durch das Lichtventil in die Lichtleitfasern, die am Austrittsende zwecks Farbdarstellung mit Farbfiltern versehen werden können.A projection lamp radiates visible light through the light valve into the optical fibers, which can be provided with color filters at the exit end for the purpose of displaying colors.
Als Lichtventilmaterialien, deren Transparenz für sichtbares Licht durch fokussiertes Infrarotlaserlicht flächenmoduliert werden kann, kommen smectische Flüssigkristalle oder Eisengranat in Frage.
Smectic liquid crystals or iron garnet are suitable as light valve materials whose transparency for visible light can be surface-modulated by focused infrared laser light.
Internationales Büro International office
INTERNATIONALE ANMELDUNG VERÖFFENTLICHT NACH DEM VERTRAG ÜBER DIE INTERNATIONALE ZUSAMMENARBEIT AUF DEM GEBIET DES PATENTWESENS (PCT)INTERNATIONAL APPLICATION PUBLISHED AFTER THE INTERNATIONAL COOPERATION AGREEMENT IN THE PATENT AREA (PCT)
(51) Internationale Patentklassifikation 4 (11) Internationale Veröffentlichungsnummer: WO 85/ 033 H04N 3/02, 9/14 A3 (43) Internationales(51) International Patent Classification 4 (11) International Publication Number: WO 85/033 H04N 3/02, 9/14 A3 (43) Internationales
Veröffentlichungsdatum : 1. August 1985 (01.08.8RELEASE DATE: August 1, 1985 (Aug 8, 1985
(21) Internationales Aktenzeichen: PCT/DE85/00024 (88) Veröffentlichungsdatum des internationalen Recherchenberichts:(21) International file number: PCT / DE85 / 00024 (88) Date of publication of the international search report:
(22) Internationales Anmeldedatum: 12. September 1985(12.09.85(22) International filing date: September 12, 1985 (September 12, 1985
29. Januar 1985 (29.01.85)January 29, 1985 (1/29/85)
(31) Prioritätsaktenzeichen: P 3403 057.3(31) Priority record number: P 3403 057.3
(32) Prioritätsdatum: 30. Januar 1984 (30.01.84)(32) Priority Date: January 30, 1984 (1/30/84)
(33) Prioritätsland: DE(33) Country of priority: DE
(71)(72) Anmelder und Erfinder: STUKENBROCK, Heiner [DE/DE]; Niedersachsenstr. 40, D-3012 Langenhagen 1 (DE).(71) (72) Applicant and inventor: STUKENBROCK, Heiner [DE / DE]; Niedersachsenstr. 40, D-3012 Langenhagen 1 (DE).
(81) Bestimmungsstaaten: AT (europäisches Patent), AU, BE (europäisches Patent), BR, CH (europäisches Patent), DE (europäisches Patent), FR (europäisches Patent), GB (europäisches Patent), JP, LU (europäisches Patent), NL (europäisches Patent), SE (europäisches Patent), SU, US.(81) Destination countries: AT (European patent), AU, BE (European patent), BR, CH (European patent), DE (European patent), FR (European patent), GB (European patent), JP, LU (European Patent), NL (European patent), SE (European patent), SU, US.
(54) Title: OPTICAL FIBRE PICTURE SCREEN(54) Title: OPTICAL FIBER PICTURE SCREEN
(54) Bezeichnung: LICHTLEITFASERBILDSCHIRM(54) Description: LICHTFITERFIBERScreen
(57) Abstract(57) Abstract
The light outlet spread out ends of an optical fibre bündle of which the close light inlet ends arranged on a helic line are eliminated by a projection lamp, form a flat screen. The transparency of a light valve ring arranged before the lig inlet ends is superficially modulated by means of a laser beam deviated by a rotating mirror.The light outlet spread out ends of an optical fiber bundle of which the close light inlet ends arranged on a helic line are eliminated by a projection lamp, form a flat screen. The transparency of a light valve ring arranged before the lig inlet ends is superficially modulated by means of a laser beam deviated by a rotating mirror.
(57) Zusammenfassung(57) Summary
Die aufgefächerten Lichtaustrittsenden eines Lichtleitfaserbündels, dessen dichtgepackte und auf einer Schraubenl nie angeordnete Lichteintrittsenden von einer Projektionslampe beleuchtet werden, bilden einen Flachbildschirm. D Transparenz eines vor den Lichteintrittsenden plazierten Lichtventilringes wird von einem mittels Drehspiegel abgelen ten Laserstrahl flächenmoduliert.
LEDIGLICH ZUR INFORMAπONThe fanned out light exit ends of an optical fiber bundle, the densely packed light entry ends of which are never arranged on a screw are illuminated by a projection lamp, form a flat screen. D Transparency of a light valve ring placed in front of the light entry ends is surface-modulated by a laser beam deflected by means of a rotating mirror. ONLY FOR INFORMATION
Code, die zur Identifizierung von PCT-Vertragsstaaten auf den Kopf bögen der Schriften, die internationale Anmeldungen gemäss dem PCT veröffentlichen.Code used to identify PCT contracting states on the headers of publications that publish international applications in accordance with the PCT.
AT Österreich FR Frankreich ML MaliAT Austria FR France ML Mali
AU Australien GA Gabun MR MauritanienAU Australia GA Gabon MR Mauritania
BB Barbados GB Vereinigtes Königreich MW MalawiBB Barbados GB United Kingdom MW Malawi
BE Belgien HU Ungarn NL NiederlandeBE Belgium HU Hungary NL Netherlands
BG Bulgarien rr Italien NO NorwegenBG Bulgaria rr Italy NO Norway
BR Brasilien JP Japan RO RumänienBR Brazil JP Japan RO Romania
CF Zentrale Afrikanische Republik KP Demokratische Volksrepublik Korea SD SudanCF Central African Republic KP Democratic People's Republic of Korea SD Sudan
CG Kongo KR Republik Korea SE SchwedenCG Congo KR Republic of Korea SE Sweden
CH Schweiz LI Liechtenstein SN SenegalCH Switzerland LI Liechtenstein SN Senegal
CM Kamerun LK Sri Lanka SU Soviet UnionCM Cameroon LK Sri Lanka SU Soviet Union
DE Deutschland, Bundesrepublik LU Luxemburg TD TschadDE Germany, Federal Republic of LU Luxembourg TD Chad
DK Dänemark MC Monaco TG TogoDK Denmark MC Monaco TG Togo
FI Finnland MG Madagaskar US Vereinigte Staaten von Amerika
FI Finland MG Madagascar US United States
Claims
AnsprücheExpectations
1) Lichtleitfaserflachbildschirm, dadurch gekennzeichnet, daß die Lichtaustrittsenden der Fasern eines Lichtleitfaserbündels die Bildelemente der Bildfläche bilden, während die Lichteintrittsenden der Lichtleitfasern in einer Schraubenlinie auf der Innenfläche eines gedachten Hohlzylinders. angeordnet sind, und daß die Transparenz eines vor den Lichteintrittsenden der Lichtleitfasern plazierten Lichtventilringes mittels eines von einem in der Zylindermitte rotierenden Drehspiegel, dessen Drehachsrichtung die gleiche oder nahezu die gleiche wie die der Bildflächennormalen ist, aus Achsrichtung in Richtung auf die Lichtleitfasern gelenkten und zeitmodulierten Laserstrahles flächenmoduliert wird, und daß dadurch mittels Durchleuchtung des Lichtventilringes mit Licht von einer im Innern des Lichtventilringes plazierten Projektionslampe ein Bild in der Bildfläche erzeugt wird.1) Optical fiber flat screen, characterized in that the light exit ends of the fibers of an optical fiber bundle form the picture elements of the image area, while the light entry ends of the optical fibers in a helix on the inner surface of an imaginary hollow cylinder. are arranged, and that the transparency of a light valve ring placed in front of the light entry ends of the optical fibers by means of a laser beam directed and time-modulated from an axial direction in the direction of the optical fibers by means of a rotating mirror rotating in the center of the cylinder, the axis of rotation of which is the same or almost the same as that of the image surface normal is surface-modulated, and in that an image is generated in the image surface by illuminating the light valve ring with light from a projection lamp placed inside the light valve ring.
2) Lichtleitfaserbildschirm nach Anspruch 1, dadurch gekennzeichnet, daß die Lichteintrittsenden der Lichtleitfasern auf der Innenfläche eines gedachten Hohlkörpers angeordnet sind, deren Radiuskoordinaten in einem Zylinderkoordinatensystem in Achs- oder winkelrichtung veränderlich sind.2) Optical fiber screen according to claim 1, characterized in that the light entry ends of the optical fibers are arranged on the inner surface of an imaginary hollow body, the radius coordinates are variable in a cylinder coordinate system in the axial or angular direction.
3) Lichtleitfaserflachbildschirm nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Lichteintrittsenden der Lichtleitfasern nicht auf einer geschlossenen Ringfläche sondern auf einem Ausschnitt aus einer solchen Fläche angeordnet sind.3) optical fiber flat screen according to claim 1 and 2, characterized in that the light entry ends of the optical fibers are not arranged on a closed ring surface but on a section of such a surface.
4) Lichtleitfaserflachbildschirm nach Anspruch 1, 2 und 3, dadurch gekennzeichnet, daß die Fläche, in der die Lichteintrittsenden der Lichtleitfasern angeordnet sind, den Grenzfall dar gekrümmten Flächen nach Anspruch 1, 2 und 3, nämlich eine ebene Fläche senkrecht oder nahezu senkrecht zur Bildfläche bildet.
5) Lichtleitfaserflachbildschirm nach Anspruch 1 , 2, 3 und 4, dadurch gekennzeichnet, daß die zu mehreren nebeneinanderliegenden Bildzeilen gehörenden Lichteintrittsfaserenden auf einem Gang oder dem Teil eines Ganges einer Schraubenlinie aufeinander folgend angeordnet sind.4) Optical fiber flat screen according to claim 1, 2 and 3, characterized in that the area in which the light entry ends of the optical fibers are arranged, the limit case of the curved surfaces according to claim 1, 2 and 3, namely a flat surface perpendicular or almost perpendicular to the image surface forms. 5) optical fiber flat screen according to claim 1, 2, 3 and 4, characterized in that the light input fiber ends belonging to a plurality of adjacent image lines are arranged in succession on a passage or part of a passage of a helical line.
6) Li ch tl eitfaserf lachbildschirm nach Anspruch 3, 4 und 5, dadurch gekennzeichnet, daß die Richtung, von der her das Laserlicht auf den Drehspiegel fällt von der Drehachsrichtung verschieden ist und daß der Drehspiegel ein Facettenspiegel ist.6) Li ch tl eitfaserf flat screen according to claim 3, 4 and 5, characterized in that the direction from which the laser light falls on the rotating mirror is different from the rotating axis direction and that the rotating mirror is a faceted mirror.
7) Lichtleitfaserflachbildschirm, nach Anspruch 1, 2, 3, 4 , 5 und 6, dadurch gekennzeichnet, daß mehrere ringsegmentförmige Ringventile einen Ring oder den Teil eines Ringes bilden, und daß in den Zwischenräumen zwischen den Ringsegmenten plazierte Lichtleitfasern nicht zur Bildfläche, sondern für Steuerzwecke zu Lichtsensoren geführt sind.7) Optical fiber flat screen, according to claim 1, 2, 3, 4, 5 and 6, characterized in that a plurality of ring segment-shaped ring valves form a ring or part of a ring, and that optical fibers placed in the spaces between the ring segments are not for the image surface, but for Control purposes are led to light sensors.
8) Lichtleitfaserflachbildschirm nach Anspruch 1, 2, 3, 4, 5, 6 und 7, dadurch gekennzeichnet, daß das Licht der8) optical fiber flat screen according to claim 1, 2, 3, 4, 5, 6 and 7, characterized in that the light of the
Projektionslampe vor Verlassen der Bildfläche Farbfilter durchleuchtet, so daß in ähnlicher Anordnung wie bei einer Farbfernsehbildröhre Farbtripel entstehen.Projection lamp is illuminated before leaving the image area, so that color triple arises in an arrangement similar to that of a color television picture tube.
9) Lichtleitfaserflachbildschirm nach Anspruch 1, 2, 3, 4, 5, S, 7 und 8, dadurch gekennzeichnet, daß das Lichtventil oder die Lichtventile nicht vor den Lichteintrittsenden der Lichtleitfasern, sondern vor den Lichtaustrittsrnden der Lichtleitfasern angeordnet sind, so daß das Laserlicht die Lichtleitfasern durchläuft.
9) Optical fiber flat screen according to claim 1, 2, 3, 4, 5, S, 7 and 8, characterized in that the light valve or the light valves are not arranged in front of the light entry ends of the optical fibers, but in front of the light exit edges of the optical fibers, so that the laser light passes through the optical fibers.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3403057 | 1984-01-30 | ||
DEP3403057.3 | 1984-01-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1985003397A2 true WO1985003397A2 (en) | 1985-08-01 |
WO1985003397A3 WO1985003397A3 (en) | 1985-09-12 |
Family
ID=6226232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1985/000024 WO1985003397A2 (en) | 1984-01-30 | 1985-01-29 | Optical fibre picture screen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0169861A1 (en) |
JP (1) | JPS61501595A (en) |
AU (1) | AU3931485A (en) |
WO (1) | WO1985003397A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU680265B2 (en) * | 1993-08-18 | 1997-07-24 | Ramasoft3 Pty Limited | Optical fibre flat screen |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3936871A (en) * | 1974-05-16 | 1976-02-03 | The United States Of America As Represented By The Secretary Of The Navy | Multi-wavelength display system |
US4085420A (en) * | 1975-10-30 | 1978-04-18 | Heiner Stukenbrock | Light pipe image display |
-
1985
- 1985-01-29 WO PCT/DE1985/000024 patent/WO1985003397A2/en unknown
- 1985-01-29 AU AU39314/85A patent/AU3931485A/en not_active Abandoned
- 1985-01-29 JP JP60500678A patent/JPS61501595A/en active Pending
- 1985-01-29 EP EP85900649A patent/EP0169861A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3936871A (en) * | 1974-05-16 | 1976-02-03 | The United States Of America As Represented By The Secretary Of The Navy | Multi-wavelength display system |
US4085420A (en) * | 1975-10-30 | 1978-04-18 | Heiner Stukenbrock | Light pipe image display |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN, Volume 6, No 111 (E-114) (989) 22 June 1982 & JP, A, 5741076 (Fujitsuu Kiden K.K.) 6 March 1982 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU680265B2 (en) * | 1993-08-18 | 1997-07-24 | Ramasoft3 Pty Limited | Optical fibre flat screen |
US5778111A (en) * | 1993-08-18 | 1998-07-07 | Ramasoft3 Pty. Limited | Optical fibre flat screen |
Also Published As
Publication number | Publication date |
---|---|
EP0169861A1 (en) | 1986-02-05 |
JPS61501595A (en) | 1986-07-31 |
AU3931485A (en) | 1985-08-09 |
WO1985003397A3 (en) | 1985-09-12 |
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CR1 | Correction of entry in section i |
Free format text: IN PAT.BUL.17/85,UNDER PUBLISHED REPLACE TEXT BY "WITHOUT INTERN.SEARCH REPORT AND TO BE REPUBL.UPON RECEIPT OF THAT REPORT" |
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AK | Designated states |
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AL | Designated countries for regional patents |
Designated state(s): AT BE CH DE FR GB LU NL SE |