WO2006047980A1 - Vorrichtungen zum aufzeichnen beziehungsweise zum auslesen eines kodierten hologrammes - Google Patents
Vorrichtungen zum aufzeichnen beziehungsweise zum auslesen eines kodierten hologrammes Download PDFInfo
- Publication number
- WO2006047980A1 WO2006047980A1 PCT/DE2005/001835 DE2005001835W WO2006047980A1 WO 2006047980 A1 WO2006047980 A1 WO 2006047980A1 DE 2005001835 W DE2005001835 W DE 2005001835W WO 2006047980 A1 WO2006047980 A1 WO 2006047980A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hologram
- positioning
- data
- modulator
- modulation pattern
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
- G11C13/042—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using information stored in the form of interference pattern
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00772—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track on record carriers storing information in the form of optical interference patterns, e.g. holograms
- G11B7/00781—Auxiliary information, e.g. index marks, address marks, pre-pits, gray codes
Definitions
- the invention relates on the one hand to an apparatus for recording a coded hologram with a radiation source, with which coherent output radiation can be generated, with an object which can be acted upon by the output radiation, which has a data structure to be coded in a hologram, and one with the output radiation
- the radiation source can be acted upon modulator, with which the modulator acting output radiation is a modulation pattern aufoniagbar, and with a Hologrammträ ⁇ ger, the overlapping of modulated by the data structure output radiation and modulated by the modulation pattern output radiation holo ⁇ a program is the data structure einschreibbar.
- the invention further relates to a device for reading out a coded hologram having a radiation source with which coherent output radiation can be generated, with a modulator which can be acted upon by the output radiation of the radiation source, with which a modulation pattern can be imparted to the output radiation impinging on the modulator Hologram carrier, which has a coded data hologram assigned to a data structure and can be acted upon by the output radiation modulated by the modulator, and with an image recording unit with which an image of the data structure can be detected.
- Such devices for recording or reading a coded hologram are known for example from GB 2 196 443 A.
- the relative positioning of the hologram carrier must take place with extremely high accuracy, namely, much more accurately than the characteristic dimensions of the modulation pattern, so that the data structure can be reconstructed.
- this is in practice For example, it is difficult to achieve, for example, in the case of mass products.
- the invention has for its object to provide devices of the type mentioned above, with which a practicable positioning is possible.
- this object is achieved according to the invention in that the object has a structurally simple positioning structure which is spatially separated from the data structure, and in which means for spatial ge separated recording of the data hologram and a positioning hologram assigned to the positioning structure are present.
- the hologram carrier has a positioning gram that corresponds to a structurally simple positioning structure that is structurally relatively to the data structure, and means for relatively displacing the modulation pattern and the hologram carrier are present depending on the image quality of the positioning structure.
- the frame carrier has, in addition to the data hologram normally linked to a structurally relatively complex data structure, a positioning hologram which is linked to a structurally simple positioning structure in relation to the data structure, on the one hand during recording a coded hologram simple position in the relatively translation-invariant Positionierholo ⁇ gramme write characteristic position data, the an ⁇ to when an ⁇ for correct positioning of the Modulations ⁇ pattern with respect to the data hologram relatively easily regenerated and as output data for efficient iterative alignment of the modulation pattern with respect to the hologram ⁇ carriers are used.
- the means for spatially separated recording have a mask arrangement for covering areas set up for recording the data hologram and / or the positioning hologram.
- the modulator is set up to offset the modulation pattern over a range which corresponds at least to the tolerance when positioning the hologram carrier.
- the means for relatively displacing the modulation pattern and the hologram carrier have a displacement device with which the hologram carrier can be moved with an accuracy corresponding to the characteristic structure dimensions of the modulation pattern.
- the positioning structure has an arrangement of spatially separated position pixels.
- the positioning structure has a simple geometry.
- metric structure of relatively high symmetry such as a circle, a square, a rectangle or a star.
- the positioning hologram is arranged at a distance from the data hologram.
- the positioning hologram has two areas each assigned to a surface coordinate.
- FIG. 1 is a schematic representation of the construction of an exemplary device according to the invention for recording an encoded hologram
- FIG. 2 is a schematic representation of the construction of an exemplary device according to the invention for reading out a coded hologram
- FIG. 4 shows a schematic illustration of a hologram recorded according to the invention with a data hologram and a positioning hologram composed of two regions
- FIG. 5 shows a schematic illustration of a picture structure associated with a hologram according to the invention with a data structure and a positioning structure.
- Fig. 1 shows a schematic representation of the structure of an exemplary device according to the invention for recording ei ⁇ nes encoded hologram.
- the device according to FIG. 1 has as a radiation source a laser 1, with which coherent output radiation 2 can be generated.
- an object 6 which is translucent in some areas and opaque in other areas is arranged, which has a data structure, for example in the form of a black-and-white image of an individual character sequence, which codes when the hologram is recorded is. Furthermore, the object 6 has a structuring structure which is structurally simple with respect to the data structure and which is likewise to be coded when the hologram is recorded.
- An object beam 7 modulated by the object passes through a second beam splitter 9 via a guiding optics 8 and, after passing through a mask arrangement 11 which can be changed in its optically effective shape by a mechanism 10, acts on a stationary support table 12 13 is attached an ⁇ .
- the second sub-beam 5 acts as modulator on a Kodiermo ⁇ dulator 14, with the second sub-beam 5 for encoding the réelle ⁇ hologram auf ⁇ a modulation structure in the form of over the cross section of the sub-beam 5 varying, schematically in Fig. 1 by different hatching areas shown phase shifts imprints is.
- the shape of the modulation structure can be set via a control unit 15 connected to the coding modulator 14.
- a coding generated from the second partial beam 5 after interaction with the coding modulator 14 The beam 16 impinges on the second beam splitter 9 via an imaging optical unit 17 and superimposed on the object beam 7 superimposed on the hologram carrier 12.
- the mask arrangement 11 can be set so that a coded data hologram assigned to the data structure and a coded positioning hologram assigned to the positioning structure and spatially separated from the data hologram can be recorded in the hologram carrier 12, but with the data hologram in FIG solid spatial relationship stands.
- FIG. 2 shows a schematic representation of the structure of an exemplary device according to the invention for reading out a coded hologram which has been recorded on the hologram carrier 12 with the device explained with reference to FIG.
- the device according to FIG. 2 has as a radiation source a laser 18 with which coherent output radiation 19 can be generated.
- the laser 18 is followed by a readout modulator 20 in the propagation direction of the output radiation 19 as a modulator with which a modulation structure in the form of varying over the cross section of the réelle ⁇ radiation 19, in Fig. 2 by different Schraf- fur Schemee for reading a recorded coded hologram schematically represented phase shifts aufab- is imprinted.
- the shape of the modulation structure can be adjusted via a control unit 21 connected to the readout modulator 20 and corresponds to the modulation structure generated by the coding modulator 14 when recording the hologram.
- a read beam 22 generated from the output radiation 2 after interaction with the readout modulator 20 acts on a beam splitter 24 via imaging optics 23 and, superimposed on the object beam 7, acts on the hologram carrier 12 explained in conjunction with FIG. 1 with the coded data hologram and the coded positioning hologram.
- the hologram carrier 12 is attached to a support table 25, which is displaceable in increments via a sliding device 26 in two dimensions in the plane of the grating carrier 12, which at least correspond to the path. via which the modulation structure with the read-out modulator 20 is movable over the cross-section of the output radiation 19.
- the output signal of the camera 30 can be fed to an image processing module 31 of the image acquisition unit, which is connected to the control unit 21 for performing an alignment process of the modulation pattern explained in more detail below.
- the output signal of the camera 30 can be displayed, for example, in a monitor, which is not shown in FIG. 2, and / or can be converted with an image data set which can be evaluated by a downstream data evaluation unit, likewise not shown in FIG.
- FIG. 3 shows a schematic representation of an illustrative modulation pattern 32, as can be generated with the coding modulator 14 or the readout modulator 20.
- the modulation pattern 32 is composed of first phase regions 33 and second phase regions 34 which, in the embodiment shown, extend in strip-like fashion along the y-direction and, as indicated by the opposite hatching, in the coding beam 16 or in the read-out beam 22 areas with phase shifts differing by 180 degrees. the. It is understood that other and in particular more complex modulation patterns can be used in contrast to the strip-like arrangement of phase-shifted regions.
- FIG. 4 shows a schematic representation of a coded hologram 35 recorded and to be read out according to the invention with a data hologram 36 assigned to a data structure and a positioning hologram 37 arranged at a lateral distance from the data hologram 36, which has a first area 38 and a second area Region 39 is formed.
- the regions 38, 39 each have a hologram structure which is relatively translationally invariant in the x direction or in the y direction.
- FIG. 5 shows a schematic representation of a picture structure 40 assigned to a hologram 35 according to the invention, present in the object 6 or imaged on the camera sensor 29, with a data structure 41 exemplarily represented by the letter sequence "Ac" and one by two Positioning structure 42, 43 formed structurally simple with respect to the data structure 41. It is er ⁇ visible that the positioning structure 44 generates a relatively simple Positionierhologramm 37 due to their structural simplicity, which when reading in the positioning structure In the case of an offset of the modulation pattern 32 at the beginning of the alignment process, image signals which can be used for optimization are also generated, which leads to sharp position pixels 42, 43 after a relatively fast iteration and reconstructs the data structure 41 in this orientation.
Landscapes
- Holo Graphy (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05803960A EP1807830A1 (de) | 2004-10-31 | 2005-10-14 | Vorrichtungen zum aufzeichnen beziehungsweise zum auslesen eines kodierten hologrammes |
US11/718,270 US20090021812A1 (en) | 2004-10-31 | 2005-10-14 | Devices for recording or reading out an encoded hologram |
JP2007538255A JP2008518378A (ja) | 2004-10-31 | 2005-10-14 | 符号化されたホログラムの記録装置又は読取装置 |
CA002579293A CA2579293A1 (en) | 2004-10-31 | 2005-10-14 | Devices for recording or reading out an encoded hologram |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004053071.8 | 2004-10-31 | ||
DE102004053071A DE102004053071B4 (de) | 2004-10-31 | 2004-10-31 | Vorrichtungen zum Aufzeichnen beziehungsweise zum Auslesen eines kodierten Hologrammes |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006047980A1 true WO2006047980A1 (de) | 2006-05-11 |
Family
ID=35708849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2005/001835 WO2006047980A1 (de) | 2004-10-31 | 2005-10-14 | Vorrichtungen zum aufzeichnen beziehungsweise zum auslesen eines kodierten hologrammes |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090021812A1 (de) |
EP (1) | EP1807830A1 (de) |
JP (1) | JP2008518378A (de) |
CA (1) | CA2579293A1 (de) |
DE (1) | DE102004053071B4 (de) |
WO (1) | WO2006047980A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2071567A1 (de) * | 2007-12-11 | 2009-06-17 | Deutsche Thomson OHG | Korrektur der Synchronisationsmarkierung für holografische Datenseiten |
DE102011080944A1 (de) * | 2011-08-15 | 2013-02-21 | Robert Bosch Gmbh | Verfahren zum Kennzeichnen von mit Pharmazeutika befüllten Kapseln mittels einer Laserstrahleinrichtung und dessen Verwendung |
US9619706B2 (en) * | 2014-03-28 | 2017-04-11 | Enceladus Ip Holdings Llc | Security scheme for authenticating object origins |
JP6256282B2 (ja) * | 2014-09-30 | 2018-01-10 | 株式会社Jvcケンウッド | ホログラム作成装置及びホログラム作成方法 |
WO2020056408A1 (en) * | 2018-09-14 | 2020-03-19 | Northwestern University | Holographic display system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4149269A (en) * | 1976-09-29 | 1979-04-10 | Ricoh Co., Ltd. | Holographic reading apparatus with an area identification and density reference scan |
US6064586A (en) * | 1998-12-31 | 2000-05-16 | Siros Technologies, Inc. | Method for holographic data storage and retrieval |
US6233083B1 (en) * | 1998-10-13 | 2001-05-15 | Pioneer Corporation | Light modulation apparatus and optical information processing system |
WO2001057859A2 (en) * | 2000-02-04 | 2001-08-09 | Optilink Ab | Method for the distribution of data marks on a medium, and method and apparatus for the holographic recording and readout of data |
US20020114027A1 (en) * | 1998-02-27 | 2002-08-22 | Optware Corporation | Apparatus and method for recording optical information, apparatus and method for reproducing optical information, apparatus for recording/reproducing optical information, and optical information recording medium |
US20030039000A1 (en) * | 1999-03-31 | 2003-02-27 | Pioneer Corporation | Optical information recording and reproducing apparatus having volume holographic memory |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3612640A (en) * | 1969-09-23 | 1971-10-12 | Bell Telephone Labor Inc | Holographic telephone directory with cinematographic accession of information |
US3675983A (en) * | 1971-02-16 | 1972-07-11 | Bell Telephone Labor Inc | Large capacity digital memory |
EP0534616B1 (de) * | 1991-08-29 | 1997-10-29 | Fujitsu Limited | Vorrichtung zum Aufzeichnen von Hologrammen und holographisches optisches Element |
US5777760A (en) * | 1996-05-10 | 1998-07-07 | Quantum Corporation | Position feedback system for volume holographic storage media |
HUP9802755A3 (en) * | 1998-11-27 | 2002-05-28 | Optilink Ab | Holographic chip and optical system for the holographic chip |
-
2004
- 2004-10-31 DE DE102004053071A patent/DE102004053071B4/de not_active Expired - Fee Related
-
2005
- 2005-10-14 CA CA002579293A patent/CA2579293A1/en not_active Abandoned
- 2005-10-14 JP JP2007538255A patent/JP2008518378A/ja not_active Withdrawn
- 2005-10-14 WO PCT/DE2005/001835 patent/WO2006047980A1/de not_active Application Discontinuation
- 2005-10-14 US US11/718,270 patent/US20090021812A1/en not_active Abandoned
- 2005-10-14 EP EP05803960A patent/EP1807830A1/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4149269A (en) * | 1976-09-29 | 1979-04-10 | Ricoh Co., Ltd. | Holographic reading apparatus with an area identification and density reference scan |
US20020114027A1 (en) * | 1998-02-27 | 2002-08-22 | Optware Corporation | Apparatus and method for recording optical information, apparatus and method for reproducing optical information, apparatus for recording/reproducing optical information, and optical information recording medium |
US6233083B1 (en) * | 1998-10-13 | 2001-05-15 | Pioneer Corporation | Light modulation apparatus and optical information processing system |
US6064586A (en) * | 1998-12-31 | 2000-05-16 | Siros Technologies, Inc. | Method for holographic data storage and retrieval |
US20030039000A1 (en) * | 1999-03-31 | 2003-02-27 | Pioneer Corporation | Optical information recording and reproducing apparatus having volume holographic memory |
WO2001057859A2 (en) * | 2000-02-04 | 2001-08-09 | Optilink Ab | Method for the distribution of data marks on a medium, and method and apparatus for the holographic recording and readout of data |
Also Published As
Publication number | Publication date |
---|---|
DE102004053071B4 (de) | 2008-01-10 |
DE102004053071A1 (de) | 2006-05-11 |
CA2579293A1 (en) | 2006-05-11 |
EP1807830A1 (de) | 2007-07-18 |
JP2008518378A (ja) | 2008-05-29 |
US20090021812A1 (en) | 2009-01-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69732042T2 (de) | Vorrichtung und verfahren zur erzeugung eines diffraktiven elements unter verwendung einer flüssigkristallanzeige | |
DE3520239C2 (de) | ||
DE69128103T2 (de) | Optische Vorrichtung | |
DE2643990C2 (de) | Vorrichtung zum optischen Lesen einer Aufzeichnung | |
DE2332595C2 (de) | Vorrichtung zum Lesen optischer Codemuster | |
DE3882358T2 (de) | System zur multiplexierten belichtung eines feldes mit regionen, deren belichtung gleichwinklig abgelenkt ist. | |
DE10293414B4 (de) | Lithograph mit bewegtem Zylinderlinsensystem | |
DE2944602A1 (de) | Lichtstrahl-aufzeichnungsvorrichtung | |
DE10241392A1 (de) | Vorrichtung und Verfahren zum Erfassen einer dreidimensionalen Relativbewegung | |
DE1549782A1 (de) | Einrichtung zur Einstellung der Lage eines Datentraegers | |
EP1807830A1 (de) | Vorrichtungen zum aufzeichnen beziehungsweise zum auslesen eines kodierten hologrammes | |
DE19711698A1 (de) | System und Verfahren zum Einrichten einer Positionsgenauigkeit in zwei Dimensionen, gestützt auf eine Sensorabtastung in einer Dimension | |
DE1284128B (de) | Zeichenerkennungsgeraet | |
DE2627693A1 (de) | System zur abtastung eines lichtstrahls | |
DE10116058A1 (de) | Lithograph mit Strahlführung und Verfahren zum Herstellen digitaler Hologramme in einem Speichermedium | |
DE4305183A1 (de) | ||
DE3784342T2 (de) | Lagedetektor des optischen brennpunktes eines optischen daten-speicher-/lesegeraetes. | |
EP1333402B1 (de) | Redundanter zweidimensionaler Code und Decodierverfahren | |
DE602004005400T2 (de) | Verfahren und Vorrichtung zur Bearbeitung holografischer Daten, von einem holografischen Datenträger wiedergegeben | |
DE2756253C2 (de) | Abtastvorrichtung | |
DE68928485T2 (de) | Profilierung eines Strahlungsbündels für Stereolithographie | |
DE2055785A1 (de) | ||
EP1826632B1 (de) | Verfahren zum Berechnen von computergenerierten Hologrammen auf einer unebenen Fläche | |
DE2411508A1 (de) | Vorrichtung zum erzeugen von masken fuer festkoerperschaltkreise | |
DE3148121C2 (de) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005803960 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2579293 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11718270 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007538255 Country of ref document: JP |
|
WWP | Wipo information: published in national office |
Ref document number: 2005803960 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2005803960 Country of ref document: EP |