DE1964179A1 - Method and arrangement for the transmission and visualization of moving hologram images - Google Patents
Method and arrangement for the transmission and visualization of moving hologram imagesInfo
- Publication number
- DE1964179A1 DE1964179A1 DE19691964179 DE1964179A DE1964179A1 DE 1964179 A1 DE1964179 A1 DE 1964179A1 DE 19691964179 DE19691964179 DE 19691964179 DE 1964179 A DE1964179 A DE 1964179A DE 1964179 A1 DE1964179 A1 DE 1964179A1
- Authority
- DE
- Germany
- Prior art keywords
- layer
- arrangement
- visualization
- magnetic field
- hologram
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 12
- 238000012800 visualization Methods 0.000 title claims description 7
- 230000005540 biological transmission Effects 0.000 title claims description 5
- 230000005291 magnetic effect Effects 0.000 claims description 17
- 238000010894 electron beam technology Methods 0.000 claims description 8
- 230000005294 ferromagnetic effect Effects 0.000 claims description 6
- 230000001427 coherent effect Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000005374 Kerr effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- KYAZRUPZRJALEP-UHFFFAOYSA-N bismuth manganese Chemical compound [Mn].[Bi] KYAZRUPZRJALEP-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/09—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on magneto-optical elements, e.g. exhibiting Faraday effect
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
- G03H1/2249—Holobject properties
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
- G03H1/2294—Addressing the hologram to an active spatial light modulator
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
- G03H2001/026—Recording materials or recording processes
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/0476—Holographic printer
- G03H2001/0478—Serial printer, i.e. point oriented processing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
- G03H1/2202—Reconstruction geometries or arrangements
- G03H2001/2223—Particular relationship between light source, hologram and observer
- G03H2001/2231—Reflection reconstruction
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
- G03H1/2202—Reconstruction geometries or arrangements
- G03H2001/2223—Particular relationship between light source, hologram and observer
- G03H2001/2234—Transmission reconstruction
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2210/00—Object characteristics
- G03H2210/30—3D object
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2224/00—Writing means other than actinic light wave
- G03H2224/04—Particle beam, e.g. e-beam
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2225/00—Active addressable light modulator
- G03H2225/10—Shape or geometry
- G03H2225/12—2D SLM
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2225/00—Active addressable light modulator
- G03H2225/20—Nature, e.g. e-beam addressed
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2240/00—Hologram nature or properties
- G03H2240/10—Physical parameter modulated by the hologram
- G03H2240/15—Polarisation modulation
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2240/00—Hologram nature or properties
- G03H2240/20—Details of physical variations exhibited in the hologram
- G03H2240/25—Magnetic variations
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Optics & Photonics (AREA)
- Holo Graphy (AREA)
Description
Verfahren und Anordnung zur Übertragung und Sichtbarmachung bewegter Hologrammbilder Die Erfindung: bezieht sich auf ein Verfahren zur Übertragung und Sichtbarmachung bewegter Hologrammbilder und eine Anordnung zur Durchführung des Verfahrens vorzugsweise für fernsehkompatible Übertragung.Procedure and arrangement for the transmission and visualization of moving Hologram images The invention: relates to a method of transmission and Visualization of moving hologram images and an arrangement for performing the Method preferably for television-compatible transmission.
Disher konnten Hologrammbilder entweder nur statisch sichtbar gemacht werden oder bestenfalls durch eine rasche Aufeinanderfolge statischer Hologrammfilmbilder ein bewegtes plastisches Bild sichtbar erzeugt worden.Hologram images could either only be made statically visible or at best by a rapid succession of static hologram film images a moving three-dimensional image has been created visibly.
Es ist außerdem schon bekannt, daß £dr optische Datenspeicher ein sehr dünner Wismuth-Mangang-Film verwendet t wird, welcher oinein otarken magnetischen Peld ausgesetzt wird, worin alle magnetischen Dipole in einer Richtung ausgerichtet werden.It is also already known that £ dr is an optical data storage medium Very thin bismuth-manganese film is used, which is an otark magnetic Peld is exposed wherein all magnetic dipoles are aligned in one direction will.
Durch die Teilstrahlen eines gepulsten Lasers wird auf spesielle Weise eine magnetische Struktur in dem Film horvoreerutin, welche vollkommen der Interferenzstruktur der konvergenten Laserstrahlen entspricht. Dieses magnetische hologramm kann entweder mit einem durchgehenden Laserstrahl oder durch Reflexion eines Laserstrahles an der Oberfläche der dtlzinen Schicht betrachtet worden.The partial beams of a pulsed laser are used in a special way a magnetic structure in the film horvoreerutin, which perfectly matches the interference structure which corresponds to convergent laser beams. This magnetic hologram can be either with a continuous laser beam or by reflecting a laser beam the surface of the German layer has been considered.
Alle diese bisher bekannten Verfahren zur Sichtbarmachung von Hologrammbildern können jedoch nicht oin plastisches 3ild über eine Fernsehstrecke übertragen und bewegte plastische Bilder sichtbar machen.All of these previously known methods for the visualization of Hologram images however, they cannot transmit a three-dimensional image via a television link and make moving three-dimensional images visible.
Dies zu erreichen ist Aufgabe des erfindungsgernäßen Verfahrens und der Anordnung zur Durchführung dieses Verfahrens. Die Lösung der Aufgabe wird dadurch geschaffen, daß ein Elektronenstrahl ein Hologrammbild auf eine ferromagnetische Schicht aufzeichnet. wobei diese Schicht an den hellen Punkten des Hologrammbildes über den Curie-Punkt erhitzt wird und diese nunmehr beschriebene Schicht durch ein kohärentes Licht zur Sichtbarmachung beleuchtet wird.Achieving this is the task of the inventive method and the order to carry out this procedure. The solution to the task is thereby created that an electron beam a hologram image onto a ferromagnetic Layer records. this layer at the bright points of the hologram image is heated above the Curie point and this now described layer by a coherent light is illuminated for visualization.
Zur Realisierung dieses Verfahrens schlägt die Erfindung vor, daß einer Elektronenstrahlkanone eine in einem Magnetfeld liegende ferromagnotische Schicht zur Aufzeichnung eines Hologrammbildes zugeordnet ist und eine kohärente Lichtquelle beispielsweise Laserlicht, mittels eines Polarisators und einer optischen Anordnung, diese Schicht beleuchtet. Zur Erzeugung des Magnetfeldes kann ein starker Dauermagnet Verwendung finden, dessen erzeugtes Magnetfeld senkrecht oder parallel zur Oberfläche der ferromagnetischen Schicht verläuft.To implement this method, the invention proposes that an electron beam gun a ferromagnotic one lying in a magnetic field Layer for recording a hologram image is assigned and a coherent one Light source, for example laser light, by means of a polarizer and an optical one Arrangement, this layer is illuminated. To generate the magnetic field, a strong Find permanent magnet use, the generated magnetic field perpendicular or parallel runs to the surface of the ferromagnetic layer.
Die Erfindung ist nachstehend beschrieben und gazoichnet, so daß auch hieraus weitere Vorteile, Maßnahmen und Verwendungsmöglichkeiten entnehmbar sind. Es zeigend Fig. 1 eine schematische Darstellung des Aufbaus der erfindungsgemäßen Anordnung, wobei der Farraday-Effekt ausgenützt wird; Fig. 2 eine chematische Darstellung eines weiteren Aufbaus der erfindungs emäßen Anordnung, wobei der Kerr-Effekt ausgenUtzt wird.The invention is described below and gazoichnet so that too further advantages, measures and possible uses can be derived from this. 1 shows a schematic representation of the structure of the inventive Arrangement using the Farraday effect; Fig. 2 is a chemical representation a further construction of the arrangement according to the invention, wherein the Kerr effect is exploited will.
Durch das Hagnotteld 100 der Magnetspule oder des Dauermagneten 101 wird zunächst in der ferromagnetischen Schicht 110 ein homogenes Magnetfeld erzeugt, wodurch diese Schicht 110 remanenzmagnetisiert wird. An den Stellen, an donen der Elektronenstrahl 120 mit erhöhter Intensität - von der Elektronenkanone 130 gesteuert - auf der Schicht 110 auftrifft, wird diese lokal über den Curie-Punkt erwärmt, wodurch diese Stelle entmagnetisiert wird. Nachdem der Elektronenstrahl 120 nun die Schicht 110 zeilenweise abgetastet hat, ist das vom Sender her konunende Hologrammbild als magnetische Information für gewisse Zeit auf diese Schicht 110 aufgezeichnet. Beleuchtet man nun dieses magnetische Bild auf der Schicht 110 mittels aufgeweitetem Laserlicht 130, 140 von einem Laser 150 bzw. 160, so wird dieses Bild Je nach Richtung durch den Farraday bzw. Kerr-Effekt sichtbar. Hierbei wird das linear polarisierte Laserlicht, welches gegebenenfalls noch in einem Polarisator 180 nachpolarisport wird, in der ferromagnetischen Schicht 110 Je nach dem Grade der Magnetisierung um einen bestimmten Polarisationswinkel gedreht, so daß man nach dem Lichtdurchtritt durch die Trägerplatte 190 und den Polarisator 170 ein Hell-Dunkel-Muster erhält, das eine sichtbare Realisatioll des ursprünglichen Hologramms darstellt. Beleuchtet man die magnetische Schicht 110 von vorne mit den Laserlicht, dann wird die Strahlung an der Schicht 110 reflektiert und es tritt durch den Kerr-Effekt die vorgeschriebene Wirkung ein und für den Betrachter wird ein echtes dreidimensionales Bild erzeugt.By the magnet field 100 of the magnetic coil or the permanent magnet 101 is first a homogeneous in the ferromagnetic layer 110 Magnetic field generated, whereby this layer 110 is remanent magnetized. In the places at Don the electron beam 120 with increased intensity - from the electron gun 130 controlled - hits the layer 110, this is locally via the Curie point heated, which demagnetizes this point. After the electron beam 120 has now scanned the layer 110 line by line, is that conunited from the transmitter Hologram image as magnetic information on this layer 110 for a certain time recorded. If this magnetic image on the layer 110 is now illuminated by means of expanded laser light 130, 140 from a laser 150 or 160, then this image becomes Visible through the Farraday or Kerr effect, depending on the direction. Here is the linearly polarized laser light, which is optionally also in a polarizer 180 nachpolarisport becomes, in the ferromagnetic layer 110 depending on the degree the magnetization rotated by a certain polarization angle, so that one after the passage of light through the carrier plate 190 and the polarizer 170 a light-dark pattern which is a visible realization of the original hologram. If the magnetic layer 110 is illuminated from the front with the laser light, then the radiation is reflected on the layer 110 and it passes through the Kerr effect the prescribed effect and for the viewer becomes a real three-dimensional Image generated.
Durch einen Stromimpuls auf die Magnetspule 101 kann nun die Schicht t10 erneut durchmagnetisiert werden, so daß das vorhergegangene Bild gelöscht wird. Über den Elektronenstrahl 120 kann nun sofort das zweite Bild eingeschrieben werden. Durch die rasche Aufeinanderfolge der Bilder, beispielsweise 20/sec., entsteht für den Beobachter neben der echten Plastizität des Bildes auch der Eindruck der Bewegung.By means of a current pulse on the magnetic coil 101, the layer can now t10 can be magnetized again, so that the previous image is erased. The second image can now be written immediately via the electron beam 120. The rapid succession of the images, for example 20 / sec., Is created for the observer, in addition to the real plasticity of the image, also the impression of the movement.
Wird statt einer Magnetspule ein Dauermagnet 101 verwendet, 80 bewirkt dessen Feld eine Durchmagnetisierung der ferremagnetischen Schicht 110 an allen Stellen, an denen deren Temperatur unterhalb der Curie-Temperatur liegt. Durch den auf treffenden Elektronenstrahl 120 rsird. die Schicht 110 kurzzeitig über die Curie-Temperatur erhitzt, wodurch die Magnetisierung verloren geht. Da es nun eine gewisse Zeit dauert, bis sich die erhitzte Stelle der Schicht 110 wieder abkühlt, bleibt das eingeschriebene Bild für diese kurze Zeit mittels der Laserstrahlung 130, 140 sichtbar und wird automatisch gelöscht, wenn die betreffende Bildstelle sich wieder unter die Curie-Temperatur abkühlt. Dieser Vorgang wiederholt sich regelmäßig bei aufeinanderfolgenden Einschreibvorgängen des Hologrammbildes.If a permanent magnet 101 is used instead of a magnetic coil, 80 has the effect whose field magnetizes the ferremagnetic layer 110 at all Places where their Temperature below the Curie temperature lies. By the impinging electron beam 120 rsird. the layer 110 briefly heated above the Curie temperature, whereby the magnetization is lost. There it now takes a certain time until the heated area of the layer 110 is again cools, the inscribed image remains for this short time by means of the laser radiation 130, 140 visible and is automatically deleted when the relevant image point cools back below the Curie temperature. This process is repeated regularly with successive writing processes of the hologram image.
- Patentansprüche -- patent claims -
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691964179 DE1964179A1 (en) | 1969-12-22 | 1969-12-22 | Method and arrangement for the transmission and visualization of moving hologram images |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691964179 DE1964179A1 (en) | 1969-12-22 | 1969-12-22 | Method and arrangement for the transmission and visualization of moving hologram images |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1964179A1 true DE1964179A1 (en) | 1971-06-24 |
Family
ID=5754631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19691964179 Pending DE1964179A1 (en) | 1969-12-22 | 1969-12-22 | Method and arrangement for the transmission and visualization of moving hologram images |
Country Status (1)
Country | Link |
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DE (1) | DE1964179A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008049917A1 (en) * | 2006-10-26 | 2008-05-02 | Seereal Technologies S.A. | Holographic display device comprising magneto-optical spatial light modulator |
-
1969
- 1969-12-22 DE DE19691964179 patent/DE1964179A1/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008049917A1 (en) * | 2006-10-26 | 2008-05-02 | Seereal Technologies S.A. | Holographic display device comprising magneto-optical spatial light modulator |
JP2010507826A (en) * | 2006-10-26 | 2010-03-11 | シーリアル テクノロジーズ ソシエテ アノニム | Holographic display device including magneto-optical spatial light modulator |
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