WO2002021486A2 - Bildschirm - Google Patents
Bildschirm Download PDFInfo
- Publication number
- WO2002021486A2 WO2002021486A2 PCT/EP2001/010367 EP0110367W WO0221486A2 WO 2002021486 A2 WO2002021486 A2 WO 2002021486A2 EP 0110367 W EP0110367 W EP 0110367W WO 0221486 A2 WO0221486 A2 WO 0221486A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- screen
- light
- screen according
- light sources
- Prior art date
Links
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
- G09F9/305—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 the ends of optical fibres
Definitions
- the invention relates to a screen with a viewing area divided into pixels, the pixels of which each emit light and are connected via optical waveguides to a light distributor which has rotating light sources arranged on a rotor, which are arranged at a distance from the axis of rotation and whose emitted light in at the ends the optical waveguide radiates arranged receptors of a coupling-in arrangement, reaches the visible surface of the screen via the individual optical waveguides, and there produces an image that is visible to the viewer and is composed of the individual pixels.
- Liquid crystal displays have recently been used increasingly for flat screens. These have become particularly common in the field of portable computers
- a generic screen is also known from US Pat. No. 3,744,048, in which the light is distributed to the individual optical fibers by means of a cylindrical rotor.
- the screen is illuminated column by column, with complete columns being sequentially supplied with light in the row direction.
- the technology proposed has several
- the invention has for its object to develop the screen of the type mentioned in the form that a flat design of such a screen, even with a large viewing area, preferably in a modular manner is made possible and the user has a high degree of brightness and contrast available.
- the invention proposes, starting from the screen of the type mentioned at the outset, that the rotating light sources arranged in the light distributor emit light parallel to the axis of rotation and radiate them into the receptors of the coupling arrangement.
- the particular advantage of the screen according to the invention lies in the flat design according to the invention.
- the light is guided from the light sources to the visible surface of the screen with minimal deflection by the shortest route using the optical waveguides.
- loss of intensity is also avoided in this way.
- the rotation of the light sources which move at a distance from the axis of rotation of the rotor, allow temporally successive illumination of pixels or groups of pixels.
- a correspondingly high speed of rotation of the rotating light sources requires a perception of an average brightness of the individual pixels of the human eye.
- the frequency of the image construction can advantageously be increased with little effort, so that the visible surface is always flicker-free for the human eye.
- the embodiment according to the invention benefits from the minimal space requirement, since the unbalance and the vibrations that arise can be reduced to a minimum.
- the novel screen technology is not based on a principle-related weakening of the light intensity.
- Luminous intensity and flicker-free images enable large-format, relaxing viewing. While conventional picture tubes do not allow distortion-free images to be produced on a large viewing area of, for example, several square meters, there is no principle-related limitation of the format with the technique according to the invention. The problems which arise with liquid crystal screens and the required accuracy of layered ceilings are also eliminated. According to the invention, a modular structure can be implemented extremely simply. It is conceivable here to construct the visible surface of a screen from a plurality of individual modules arranged one above the other and next to one another, each of which has its own rotor.
- the receptors of the optical fibers are arranged equidistantly in the coupling arrangement in the circumferential direction of the rotary movement of the rotor.
- the light sources in particular light-emitting diodes
- the light sources are operated with a pulsed voltage.
- a light emitting diode which is operated with a pulsed voltage, shines a maximum of almost ten times brighter than when operated with a constant voltage.
- the voltage with which the light source is operated is pulsed in such a way that the light source only lights up if it leads directly to the visible surface of the screen opposite the receptor Optical fiber is located.
- the maximum brightness of this light source increases due to the operation of the light source, preferably a light-emitting diode, with a pulsed voltage, and on the other hand for switching off the light source at times when the transmission to the visible surface of the screen is interrupted, to a lower energy requirement.
- an advantageous development of the invention provides that the operating voltage for the light source is controlled in such a way that the light from the light sources shines at a certain angle, deviating from the vertical incidence, into the receptors of the optical waveguides.
- the incidence of light can be influenced by a corresponding time offset of the pulsing of the operating voltage in such a way that there is always a constant angle of rotation offset between the receptor and the light source.
- the angle of incidence in the optical waveguide to the visible surface causes a constant cross section of the Optical fiber for the length provided an identical exit angle of the light from the optical fiber on the visible surface. In this way it is possible to generate a particularly high-contrast, well-illuminated image for certain viewing angles or to bring about a stereoscopic effect.
- the creation of puzzle images or even three-dimensional representations is possible in this way.
- the rotor is equipped with three different types of light emitting diodes.
- the light-emitting diodes preferably emit red, green or blue light.
- the light sources located on the rotor radiate light one after the other into the receptors of the optical waveguides combined to form the coupling arrangement.
- the rotor is preferably disc-shaped or star-shaped. This ensures minimal dimensions, unbalance and moments of inertia. Particularly in the case of a star-shaped design of the rotor, it is expedient to attach the light sources to the rotor in an articulated manner so that the light sources automatically center in the operating position when the speed is recorded due to the centrifugal forces. This prevents a wobbling imbalance.
- the individual joints can advantageously also be designed as springs or folding hinges. If necessary, the articulated, star-shaped supports of the light sources can have a sliding support at their outer ends, which is expediently made of Teflon. Magnetic support for the slide support is also conceivable.
- the voltage supply of the light sources takes place via a control which converts video signals depending on the angle of rotation of the rotor into the corresponding voltage pulses for the light sources.
- this signal is advantageously modulated in accordance with the image to be displayed in such a way that the red, green and blue components of the light emitted by the image point correspond to the image to be displayed on the visible surface. So that the phase angle of the rotation of the rotor is always aligned with the control of the light sources, it is useful if the light distributor sends a signal to the control at least once per revolution of the rotor.
- the rotor is driven by means of an electric motor. It is also expedient to design the rotor itself as an armature of a direct current or alternating current motor, in particular when standing light sources are used. In the interest of a flat design without any sliding contact and long-lasting storage, the drive of the rotor should be designed as an electric motor with an external rotor design. Here, the rotor itself can form the external rotor.
- the optical fibers used can consist of both polymers and glass fibers.
- the use of polymers has the advantage that polymer fibers are much cheaper and have almost identical functions, especially with regard to their transmission behavior.
- a production-friendly and space-saving arrangement of the optical waveguides results if the receptors of the coupling arrangement for individual screen segments are arranged on a straight line and the corresponding straight lines are each arranged in a star shape around the axis of rotation of the rotor.
- the visible surface can advantageously be subdivided into lines or line sections which lead to a receptor group arranged on a straight line.
- groups of optical fibers of lines or line sections can each be carried out identically in a standardized manner. It is expedient here to design the coupling arrangement from identical circular or ring segments in which the receptors for individual screen segments are arranged.
- a corresponding modularization would be possible in the sense that light source conductors arranged on the side facing the visible surface of the screen are arranged one behind the other in a row or column element of rectangular cross-section and at the other end also arranged one behind the other in a pie-shaped spatial shape to form a circle or ring segment are.
- a multi-modular structure can also be realized.
- lines or line sections can be combined in the manner described above to form basic modules and, for example, can be combined into four-part circles on the side of the coupling arrangement, or into a quarter segment of the visible surface of the screen.
- each basic module could be designed identically, as well as every quartered visible surface coupling arrangement component.
- An advantageous development of the invention provides that the parts of the coupling arrangement belonging to individual screen segments are provided with digital or analog coding and an optical reading device is arranged on the rotor, by means of which the respective part of the coupling arrangement is identified. In this way, a synchronization between the position of the rotor and the control of the screen is always guaranteed.
- the visible surface of the screen is darkened with a low reflection or colored black except for the exit openings of the optical fibers.
- the optical waveguides on the part of the coupling arrangement open into a low-reflection or black-colored environment in which only the light sources emit light. If the rotor is designed as a disk, black coloring on the side of the rotor facing the end face of the optical waveguide is expedient.
- the optical waveguides In the interest of a high transmission efficiency of the optical waveguides, it makes sense to mirror the longitudinal walls of the optical waveguides at the coupling and / or decoupling points in the area of the summary of the coupling arrangement or the visible surface. In this way, the contact of the optical fibers with the adjacent components is almost harmless for the efficiency of the transmission or the reflection on the lateral boundary walls of the optical fibers.
- the rotor For a rigid and vibration-resistant combination of rotor, drive, optical fiber bundles and visible surface, it is expedient if the rotor is driven by a drive which is located between the rotor and the visible surface of the screen and is arranged centrally between the optical fibers.
- the large number of optical fibers forms a stable bond that is ideally suited for fastening the drive.
- flat ribbon assemblies These flat band composites can advantageously be in a circular or annular shaped piece, for example by Pouring with synthetic resin, can be summarized.
- the ribbon connection ensures in particular the distance between the individual optical fibers.
- the drive or the rotor or a complete screen module or the entire screen or all of these components can be made gas-tight.
- a gastight design of the device facilitates the hygiene treatment.
- Fig. 1 A schematic diagram of the structure
- Fig. 2 A partially cut, schematic
- the visible surface 1 of the screen is designated by the reference number 1.
- the visible surface 1 is subdivided into a plurality of pixels 2, which are each connected to a light guide 3.
- the viewing surface 1 is colored black with little reflection apart from the outlet openings of the optical waveguides 3.
- the entire viewing area 1 is divided into four identical image segments 4.
- the coupling arrangement 5 is also divided into four modules 6 in accordance with the division of the visible surface 1 into four image segments 4.
- the optical waveguides 3 emanating from the image segments 4 of the visible surface 1 and which form receptors 7 for incident light are combined at their ends.
- one line 8 of pixels 2 of an image segment 4 is guided onto the coupling arrangement 5 by means of the optical waveguides 3 starting from the pixels 2, the optical fibers 3 of each line 8 being combined into a flat ribbon composite and arranged on the coupling arrangement 5 on a straight line which extends through the center of the coupling arrangement 5.
- the coupling arrangement 5 is round, wherein it is provided with a central recess 9.
- the individual flat band composites 10 of the optical waveguides 3 are combined on the part of the visible surface 1 to form elements 11 of rectangular cross section segmented in pixels 2.
- the individual elements 11 consist of cast resin and are joined together by means of tongue and groove connections.
- the optical waveguides 3 belonging to a flat ribbon composite 10 are each provided with an encircling sprue 12 in the form of an annular segment or pie piece, which also consists of synthetic resin.
- the basic elements 13 consisting of the elements 11 of rectangular cross-section, the flat band assemblies 10 of the optical waveguides 3 and the pie-shaped sprues 12 are standardized and identical for the entire visible surface 1 of the screen.
- the basic elements 13 are first assembled in the course of the production by the coupling arrangement 5 to form quarter-circle modules 6. Then the image segments 4 and the modules 6 are assembled to the visible surface 1 or the coupling arrangement 5.
- the boundary surfaces extending in the longitudinal direction of the optical waveguides 3 are mirrored, so that the
- Transmission efficiency of the optical waveguide 3 is not deteriorated by contact with the resin gate.
- Each module 6 is provided with a binary coding (not shown) on the coupling arrangement 5 side.
- the ends on the side of the coupling arrangement 5 of the optical fibers 3 of the ribbon assemblies 10 are colored in different sequences, so that by means of one not shown scanning laser through the transmissive resin of the sprue 12, an individual binary code can be read.
- the rotor 20 is arranged, which is set in rotation by a drive 21.
- the rotor 20 rotates as shown about a central axis of rotation 22 in the center of the coupling arrangement 5.
- three arms 23 are attached to the rotor 20, which are provided with LEDs 24 in the region of the receptors 7 of the coupling arrangement 5 ,
- the light-emitting diodes 24 radiate into the receptors 7 as required.
- the arms 23 are each provided with a joint 25 between the axis of rotation 22 and the light-emitting diodes 24, which enables the arms 23 to move in the direction of the axis of rotation 22. In this way, each arm 23 is automatically centered without wobble by the centrifugal forces of the rotation.
- the drive 21 of the rotor 20 is arranged centrally in the coupling arrangement 5 and between the optical fibers 3.
- Recess 9 of the coupling arrangement 5 is a drive shaft 30 of the
- a control 40 for the light-emitting diodes 24 rotates together with the rotor 20
- Receiver 41 arranged for video signals.
- the video signals are transmitted from an infrared transmitter 42 to the receiver 41 and from the
- Control 40 evaluated which gives the corresponding voltage pulses to the LEDs 24.
- the control 40 and the drive 21 are supplied with energy inductively.
- the drive 21 is designed as an external rotor with an internal coil arrangement 51 and a ferritic external rotor 50.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01972026A EP1323153A2 (de) | 2000-09-09 | 2001-09-07 | Bildschirm |
AU2001291838A AU2001291838A1 (en) | 2000-09-09 | 2001-09-07 | Screen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10044664A DE10044664A1 (de) | 2000-09-09 | 2000-09-09 | Bildschirm |
DE10044664.7 | 2000-09-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002021486A2 true WO2002021486A2 (de) | 2002-03-14 |
WO2002021486A3 WO2002021486A3 (de) | 2002-06-27 |
Family
ID=7655659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/010367 WO2002021486A2 (de) | 2000-09-09 | 2001-09-07 | Bildschirm |
Country Status (6)
Country | Link |
---|---|
US (1) | US20030164807A1 (de) |
EP (1) | EP1323153A2 (de) |
CN (1) | CN1468425A (de) |
AU (1) | AU2001291838A1 (de) |
DE (1) | DE10044664A1 (de) |
WO (1) | WO2002021486A2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004006289A1 (de) * | 2004-02-09 | 2005-08-25 | Siemens Ag | Anordnung mit einer beweglichen Lichtquelle |
EP1779367A2 (de) * | 2004-08-19 | 2007-05-02 | Da Wei Huang | Visuelles display |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100607644B1 (ko) * | 2003-10-15 | 2006-07-31 | 송태선 | 2차원 광주사 장치 및 이를 이용하는 영상 표시 장치 |
US20090002362A1 (en) * | 2007-06-28 | 2009-01-01 | Boundary Net, Incorporated | Image to temporal pixel mapping |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3744048A (en) * | 1971-09-01 | 1973-07-03 | Ultronic Systems Corp | Display apparatus employing fiber optics |
US3878399A (en) * | 1972-10-03 | 1975-04-15 | Yamato Scale Co Ltd | Optical character display device |
EP0422777A1 (de) * | 1989-09-25 | 1991-04-17 | Hazeltine Corporation | Verfahren und verbesserte Vorrichtung für Flachtafelanzeigesystem |
DE19540363A1 (de) * | 1995-10-30 | 1997-05-07 | Univ Schiller Jena | Flachbildschirm |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1765215A (en) * | 1927-08-22 | 1930-06-17 | Duchard Henri Maurice | Publicity apparatus |
US5101466A (en) * | 1987-05-29 | 1992-03-31 | Tru-Lyte Systems, Inc. | Wide angle viewing illuminated information display assembly and process for manufacturing same |
US5818998A (en) * | 1994-03-25 | 1998-10-06 | Inwave Corporation | Components for fiber-optic matrix display systems |
US5665974A (en) * | 1995-11-16 | 1997-09-09 | The Boeing Company | Self-monitoring optical encoder for wavelength division multiplexing optical sensors |
AU5851398A (en) * | 1997-02-06 | 1998-08-26 | Dieter W. Blum | Method and apparatus for display sign |
ES2160433T3 (es) * | 1998-06-02 | 2001-11-01 | Rainer Glatzer | Pantalla plana. |
US6737983B1 (en) * | 1999-10-26 | 2004-05-18 | John Temple | Display board having illuminated elements and method |
US6828961B2 (en) * | 1999-12-30 | 2004-12-07 | Texas Instruments Incorporated | Color wheel synchronization in multi-frame-rate display systems |
-
2000
- 2000-09-09 DE DE10044664A patent/DE10044664A1/de not_active Withdrawn
-
2001
- 2001-09-07 EP EP01972026A patent/EP1323153A2/de not_active Withdrawn
- 2001-09-07 AU AU2001291838A patent/AU2001291838A1/en not_active Abandoned
- 2001-09-07 US US10/363,959 patent/US20030164807A1/en not_active Abandoned
- 2001-09-07 WO PCT/EP2001/010367 patent/WO2002021486A2/de not_active Application Discontinuation
- 2001-09-07 CN CNA018170439A patent/CN1468425A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3744048A (en) * | 1971-09-01 | 1973-07-03 | Ultronic Systems Corp | Display apparatus employing fiber optics |
US3878399A (en) * | 1972-10-03 | 1975-04-15 | Yamato Scale Co Ltd | Optical character display device |
EP0422777A1 (de) * | 1989-09-25 | 1991-04-17 | Hazeltine Corporation | Verfahren und verbesserte Vorrichtung für Flachtafelanzeigesystem |
DE19540363A1 (de) * | 1995-10-30 | 1997-05-07 | Univ Schiller Jena | Flachbildschirm |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004006289A1 (de) * | 2004-02-09 | 2005-08-25 | Siemens Ag | Anordnung mit einer beweglichen Lichtquelle |
EP1779367A2 (de) * | 2004-08-19 | 2007-05-02 | Da Wei Huang | Visuelles display |
EP1779367A4 (de) * | 2004-08-19 | 2010-03-17 | Da Wei Huang | Visuelles display |
Also Published As
Publication number | Publication date |
---|---|
EP1323153A2 (de) | 2003-07-02 |
DE10044664A1 (de) | 2002-04-04 |
US20030164807A1 (en) | 2003-09-04 |
WO2002021486A3 (de) | 2002-06-27 |
AU2001291838A1 (en) | 2002-03-22 |
CN1468425A (zh) | 2004-01-14 |
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