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7445873 Lithograph with beam guidance and method of producing digital holograms in a storage medium  
Producing a digital hologram-in a storage medium includes: (i) focusing a write beam onto the storage medium; (ii) moving the write beam two-dimensionally relative to the storage medium; (iii)...
7436537 Distributed system for producing holographic stereograms on-demand from various types of source material  
A distributed system for producing holographic stereograms (holograms). A data acquisition station is typically remote from image processing, printing, and replicating stations. The data...
7428085 Method for producing hologram by pico-second laser  
Disclosed is a method of producing a hologram through a two-beam laser interfering exposure process, which comprises emitting a coherent laser light with a pulse width (τ) ranging from greater...
7423792 Holographic printer  
A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from...
7413830 Lithograph with one-dimensional trigger mask and method of producing digital holograms in a storage medium  
The present invention relates to a method of producing digital holograms in a storage medium, in which the technical problem of writing computer-generated holograms by means of optical lithography...
7405851 Method for identifying articles  
The invention relates to a method for identifying articles, wherein article identification data are made available and the article is provided with a hologram representing said data so that the...
7388695 Data storage devices and methods  
A data storage device including: a plastic substrate having a plurality of volumes arranged in tracks along a plurality of vertically stacked, laterally extending layers therein; and, a plurality...
7384709 Lithograph with a trigger mask and method of producing digital holograms in a storage medium  
A lithograph for producing digital holograms in a storage medium includes a light source for producing a write beam, the light source having drive means for the two-dimensional movement of the...
7372602 Method for recording and reproducing holographic data and an apparatus therefor  
A holographic recording and reproducing method for recording data in a holographic recording medium comprising a recording layer in which data are to be recorded as phase information of light by...
7369286 Hologram recording medium, and recording apparatus and reproducing apparatus for the same  
A hologram recording medium, and a recording apparatus and a reproducing apparatus for the same, by which scattered beam noise is minimized and recording capacity is increased using spatial...
7362483 Postprocessing apparatus and postprocessing method  
A postprocessing apparatus for conducting postprocessing on an image forming member, including a receiving unit for receiving an image forming member having an image formed thereon, and an...
7345799 Optical recording medium and its use  
An optical recording medium which comprises a holographic recording layer on which information is recorded by means of holography, a light shield member fixed to at least one of main surfaces of...
7342697 Hologram recording medium  
A hologram recording medium includes a hologram recording layer and a transparent substrate layer stacked on the hologram recording layer. The recording layer records an interference pattern of a...
7326500 Sensitization of photo-thermo-refractive glass to visible radiation by two-step illumination  
Photo-thermo-refractive (PTR) glass is a multi-component silicate glass having photosensitivity in rear UV region. A novel process is disclosed for PTR glass sensitization to visible region by...
7324248 Holographic printer  
A method and apparatus for producing holograms may use a computer generated 3-D model or data generated using multiple 2-D camera images taken of a real 3-D object or scene. The data is digitally...
7319551 Maskless optical interferometric lithography  
An optical device generated by interferometric lithography, in the form of a surface relief pattern that diffracts light, to be used mainly in optical security, produced by optical systems...
7307770 Hologram imaging device and method of using same  
A hologram imaging device for obtaining hologram images and associated document markings which are commonly being used for document verification is disclosed. The imaging device comprises a housing...
7304775 Actively stabilized, single input beam, interference lithography system and method  
An interference lithography system is described that is capable of exposing high resolution patterns in photosensitive media and employing yield increasing active stabilization techniques needed in...
7295356 Method for improved holographic recording using beam apodization  
An apodization system for achieving a substantially uniform intensity profile of a modulated reference beam on a holographic recording medium. The substantially uniform intensity profile serves to...
7289255 Hologram apparatus, positioning method for spatial light modulator and image pickup device, and hologram recording material  
The present invention provides a hologram apparatus for recording interference fringes formed from reference light and signal light optically spatially modulated by a spatial light modulator on a...
7283286 Hologram recording/reproducing device and optical unit  
A hologram recording/reproducing device includes a laser light source emitting laser light; a spatial light modulator generating signal light and reference light from the laser light emitted from...
7277208 Hologram recording medium, hologram recording and reproduction apparatus and method of producing a hologram recording medium  
A hologram recording medium is provided which can prevent sensitization of a region thereof other than a data recording region thereby to prevent deterioration of a characteristic of the hologram...
7271940 Deposition of photosensitive media for digital hologram recording  
Hologram production devices can include holographic recording material deposition systems to deposit holographic recording material as needed by the hologram production device. Various nozzles, ink...
7262893 Data read/write device for holographic WORM and method thereof  
A data writing and reading device is capable of writing and reading data with respect to a holographic storage medium. The data writing and reading device includes a light source which emits a...
7262891 Holographic printer  
A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. In one embodiment the data are generated entirely by a computer as a 3-D...
7258957 Method for aligning exposure mask and method for manufacturing thin film device substrate  
A method for aligning an exposure mask, comprises: using a plurality of hologram masks, on which alignment marks are formed,; aligning position of the hologram masks toward an object, which is...
7255968 Alignment method of exposure mask and manufacturing method of thin film element substrate  
A method for aligning an exposure mask comprises: using a plurality of hologram masks, on which an alignment mark is formed; aligning position of the hologram masks toward an object to be exposed...
7245408 Systems and methods for producing wide field-of-view holographic displays  
Hologram recording devices and techniques can be employed to produce wide-field-of-view holograms. In one embodiment, a specialized lens is used to couple an object beam into a holographic...
7230747 Hologram retention method  
Information recorded as a hologram in a predetermined position of an optical recording medium is reproduced, and subsequently the reproduced information is re-recorded and retained in the same...
7227675 Hologram recording medium, recording/reproducing apparatus and method therefor  
A hologram recording medium in which data is recorded at a high density, the input of a reference beam to an area to which data is not to be recorded of a recording layer is prevented when...
7227674 Active digital hologram display  
Certain types of holographic recording materials can be used to updateably record holographic stereograms formed when fringe patterns are generated through interference of an object laser beam...
7209270 Method and apparatus for phase correlation holographic drive  
A holographic storage apparatus for recording data in a holographic medium includes at least one light source for generating a reference beam and a signal beam. The reference beam is preferably a...
7206108 Method for recording and reproducing holographic data and holographic recording medium  
A holographic recording and reproducing method for recording holographic data in and reproducing holographic data from a holographic recording medium including a recording layer in which data are...
7206105 Hologram recording device and hologram reproduction device  
A hologram record apparatus ( 100 ) includes a spatial light modulator ( 15 ) and a control device ( 18 ). The spatial light modulator ( 15 ) is arranged on an optical path of signal light (L 1 )...
7199912 Fourier transform lens system and holographic storage system using same  
A Fourier transform lens system includes: a first lens group having negative power and a second lens group having positive power disposed at one side of the first lens group with the first lens...
7193757 Angle multiplexing holographic storage device and method  
In an angle multiplexing holographic storage device, a movable beam splitter is used for splitting a source beam into an object beam and a reference beam. An encoding device is used for encoding...
7190496 Enhanced environment visualization using holographic stereograms  
Hologram production techniques can combine source data representing realistic information describing an environment with source data providing representational information describing a feature of...
7187481 System and method for providing gain and thresholding to a holographic data parallel recording and replication system incorporating independent angular address assignment  
System and method for providing gain and thresholding to a holographic data parallel recording and replication system incorporating independent angular address assignment. A plurality of...
7167287 Hologram imaging device and method of using same  
A hologram imaging device for obtaining hologram images and associated document markings which are commonly being used for document verification is disclosed. The imaging device comprises a housing...
7161723 Scheme capable of providing gain and thresholding to the parallel recording and replication of holographic media  
A system and method capable of providing high data rate data copying and recording in holographic data storage while maintaining the copied data's signal-to-noise ratio. This is achieved by using...
7154648 Apparatus and method for fabricating hologram  
A hologram fabricating apparatus includes a coherent light generator, two micro-display devices and a telecentric system. The coherent light generator provides a first coherent light and a second...
7149015 Obliquity correction scanning using a prism mirror  
Disclosed are optical systems and methods of producing obliquity corrected light beams, for example, holographic recording and retrieval systems that utilize an obliquity corrected reference beam....
7148468 Mirror angle measurement and servo control apparatus for holographic digital data storage system  
A mirror angle measurement and a servo control apparatus for a Holographic Digital Data Storage (HDDS) system is disclosed. The mirror angle measurement apparatus includes a first mirror having a...
7130092 Apparatus and method for recording and reproducing optical information  
An optical information recording/reproducing apparatus generates information light by modulating light emitted by a light source device with a light modulator depending on the information to be...
7123340 Lithograph with moving lens and method of producing digital holograms in a storage medium  
The invention relates to a lithograph for producing digital holograms in a storage medium ( 4 ), having a light source ( 6, 10 ) for producing a write beam ( 12 ) with a predefined beam cross...
7099057 In-line holographic mask for micromachining  
A method of fabricating a holographic mask includes the steps of providing an illumination source and a non-opaque object mask. The source is for generating a coherent illumination beam directed...
7092134 Method and apparatus for recording a hologram from a mask pattern by the use of total internal reflection holography and hologram manufactured by the method  
The present invention relates to a method and an apparatus for forming a hologram from a mask. According to the invention a photoresist is used as the holographic recording medium and the planes of...
7088482 Holographic recording techniques using first and second portions of a spatial light modulator  
The invention is directed to holographic recording techniques that generate a data encoded object beam and a reference beam using a spatial light modulator of the holographic recording system. An...
7088481 Holographic recording techniques using reference zone of spatial light modulator  
The invention is directed to holographic recording techniques that generate a data encoded object beam and a reference beam using a spatial light modulator of the holographic recording system. An...
7088480 Distortion-tolerant 3-D object recognition by using single exposure on-axis digital holography  
Disclosed herein is a method, system and computer readable medium for a distortion-tolerant 3-D object recognition that may include recording a single exposure digital hologram of a 3D object on a...
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