Copying By Holographic Means Patents (Class 359/12)
  • Patent number: 10359736
    Abstract: A method for producing holograms with a multiplicity of holographic prescriptions from a single master is provided. A multiplicity of holographic substrates each having a first hologram is stacked on a second holographic recording medium substrate. The first hologram is designed to diffract light from a first direction into a second direction. When expose to illumination from the first direction zero order and diffracted light from each first hologram interfere in the second holographic recording medium substrate forming a second hologram. The second hologram is then copied into a third holographic recording medium substrate to provide the final copy hologram.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: July 23, 2019
    Assignee: DigiLens Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
  • Patent number: 9720088
    Abstract: A measurement device (120) includes a light director and a spatial light modulator (130). The light director is disposed to direct light to the spatial light modulator (130) and the spatial light modulator (130) is disposed to receive light from the light director and to modulate it to form an intensity pattern. An optical element is disposed to receive light which formed the intensity pattern and is arranged to magnify the intensity pattern into a measurement space. A detector (142) is disposed to detect light reflected from the measurement space.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: August 1, 2017
    Assignee: THE SECRETARY OF STATE FOR BUSINESS, INNOVATION & SKILLS
    Inventors: Edward Benjamin Hughes, Matthew Stuard Warden
  • Patent number: 9581965
    Abstract: An analytical method for computing a video hologram for a holographic reproduction device having at least one light modulation means is disclosed, wherein a scene split into object points is encoded as a whole hologram and can be seen as a reconstruction from a visibility region, located within a periodicity interval of the reconstruction. The visibility region, together with each object point of the scene to be reconstructed, defines a sub-hologram and the whole hologram is generated from a superposition of sub-holograms, wherein the complex hologram values of a sub-hologram are determined from the wave front of the respective object point to be reconstructed in a modulator region of the light modulation means, by calculating and evaluating the transmission or modulation functions of an imaging element formed in the modulator region. The object point to be reconstructed is located in the focal point of the imaging element.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: February 28, 2017
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventor: Alexander Schwerdtner
  • Patent number: 9354448
    Abstract: The invention relates to a lighting apparatus comprising a laser source (2) for emitting laser light (3). The lighting apparatus further comprises a first laser light modification unit (7) for modifying an optical characteristic of the laser light, which first laser light modification unit (7) is situated at a first location, and a second laser light modification unit (8) for modifying an optical characteristic of the laser light, which second laser light modification unit (8) is situated at a second location. The lighting apparatus further comprises a laser light distribution modification unit (4) for modifying a laser light distribution (5, 6) directed onto at least one of the first and second laser light modification units (7, 8) from a first to a second laser light distribution which is different from the first laser light distribution.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: May 31, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Rifat Ataa Mustafa Hikmet, Ties Van Bommel
  • Patent number: 9001401
    Abstract: A process by which a multi-image type hologram, wherein one 3D image changes over to another depending on a viewing direction, can be fabricated in a simple construction, and a multi-image type hologram fabricated by that process. According to the process for the fabrication of a multi-image type hologram wherein one image changes over to another depending on a viewing direction, the area of a hologram recording material is divided into a plurality of sub-areas. Objects to be displayed on different images are holographically recorded in the respective sub-areas, using reference light having the same angle of incidence, images recorded in the respective sub-areas are simultaneously reconstructed from the recorded first-stage hologram, so that a second-stage hologram recording material is located near the reconstructed object images for recording them as a reflection or transmission type volume hologram.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: April 7, 2015
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tsuyoshi Yamauchi, Masachika Watanabe, Tomoko Kumasawa, Makio Kurashige, Akiko Kitamura, Mitsuru Kitamura, Kenji Ueda
  • Patent number: 8908249
    Abstract: A method of manufacturing a master for producing a hologram device is provided. The holographic image reconstructs when the photosensitive film of the hologram device is struck by a beam of light from a wide angle being defined relative to a perpendicular line to a surface of the photosensitive film.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: December 9, 2014
    Assignee: Claudelli Productions, Inc
    Inventors: Joseph J. Ciaudelli, Thomas Cvetkovich
  • Patent number: 8903207
    Abstract: A Head Up Display can be utilized to find light from an energy source. The Head Up Display includes a first waveguide having a first input coupler and a first output coupler. The Head Up Display can also include a second waveguide having a second input coupler and a second output coupler. The first waveguide has a first major surface and the second waveguide has a second major surface, which are disposed approximately parallel to each other. The first waveguide and the second waveguide are positioned as a combiner and allowing viewing an outside feed and information from an image source. The first input coupler diffracts light in the first field of view into the first waveguide and light in a second field of view reaches the second input coupler and is diffracted into the second waveguide.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: December 2, 2014
    Assignee: Rockwell Collins, Inc.
    Inventors: Robert D. Brown, Kurt A. Stahl, Robert B. Wood
  • Publication number: 20140230897
    Abstract: An electromagnetic wave concentrating system, comprising a photovoltaic material and at least one holographic concentrator. The holographic concentrator includes at least two stacked holographic optical elements (HOE). Each HOE is configured to diffract incident light into a diffracted beams having different ranges of wavelengths. The diffracted beams generated by each HOE are directed at the photovoltaic material.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 21, 2014
    Applicant: HolFocus, LLC
    Inventors: David A. Waldman, Joby Joseph
  • Patent number: 8810766
    Abstract: A method and a device are described for producing copies/replica of a volume reflection hologram wherein a holographic film (4) is guided over a drum with polygon cross-section having at least two planar (polygon) master surfaces (3) to each of which at least one master (7) is attached in the circumferential direction, where the film is brought into contact with at least one master hologram (7) and its entire surface is exposed to laser. It is essential that to at least one of the master surfaces (5) with the film guided over it, a laser exposure unit (22) is assigned which allows full exposure of the respective master surface to parallel, coherent laser beams (6), and that the at least one exposure unit (22) follows section wise the rotational movement of the drum by a splitting angle with equal velocity and exposes the corresponding master surface (5) to then be reset quickly again and perform the same angular displacement and exposure together with the next master surface.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: August 19, 2014
    Assignee: Hologram Industries Research GmbH
    Inventor: Günther Dausmann
  • Patent number: 8804222
    Abstract: An image recording medium in which a refractive index modulation is recorded in a material in a layer such that, when the hologram recording medium is illuminated from a predetermined angle and a viewpoint is moved horizontally with respect to a normal line, a hologram image having continuous parallax in at least the horizontal direction is reproduced and that, when the viewpoint is moved in a direction with respect to the normal line different from the horizontal direction, another image that is different from and thus is not continuous with the hologram image is reproduced.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: August 12, 2014
    Assignee: Sony Corporation
    Inventors: Nobuhiro Kihara, Akira Shirakura
  • Patent number: 8786923
    Abstract: According to one aspect and example, a method for recording holographic media and/or holographic master data masks includes recording at least a first hologram or information layer with a first holographic medium (e.g., a “submaster”) and recording at least a second information layer with a second holographic medium (e.g., a second “submaster”). The first information layer and the second information layer from the first and second holographic media are then sequentially reconstructed and stored with a single holographic master medium (e.g., a “master”). The holographic master may then be used to record the stored first and second information layers into additional holographic media, for example, into HROM devices or the like.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: July 22, 2014
    Assignee: Akonia Holographics, LLC
    Inventors: Ernest Y. Chuang, Kevin R. Curtis, Yunping Yang
  • Patent number: 8760742
    Abstract: A method and a device produce an individualized hologram from a generated light beam. According to the method, the light beam is individually modulated in a spatial light modulator, a holographic recording material is arranged relative to a holographic master, and the individually modulated light beam is guided in such a manner that at least part of the individually modulated light beam is refracted and/or reflected on the holographic master and an interference pattern representing the individualized hologram is produced in the holographic recording material. The individually modulated light beam is displaced relative to the holographic recording material and the holographic master to scan the entire holographic master. The recording material is arranged so as to rest on a cylindrical drum or a cylindrical drum segment and the drum is rotated about a drum axis of the drum or the drum segment during scanning of the holographic master.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: June 24, 2014
    Assignee: Bundesdruckerei GmbH
    Inventors: André Leopold, Christian Kunath, Jens Ehreke, Gerhard Hochenbleicher, Christian Klepzig, Michael Langgassner
  • Publication number: 20140168735
    Abstract: Embodiments related near-eye display devices having angularly multiplexed holograms are disclosed. One disclosed embodiment provides a near-eye display device including an image source, a waveguide, and a controller. The waveguide is configured to propagate light received the image source to a user of the near-eye display device, and includes a holographic grating comprising a plurality of angularly multiplexed holograms. The controller is configured to control display of an image via the image source.
    Type: Application
    Filed: December 19, 2012
    Publication date: June 19, 2014
    Inventors: Sheng Yuan, Ian Nguyen, Steve Robbins, David D. Bohn
  • Patent number: 8649077
    Abstract: An image recording medium in which a refractive index modulation is recorded in a material in a layer such that, when the hologram recording medium is illuminated from a predetermined angle and a viewpoint is moved horizontally with respect to a normal line, a hologram image having continuous parallax in at least the horizontal direction is reproduced and that, when the viewpoint is moved in a direction with respect to the normal line different from the horizontal direction, another image that is different from and thus is not continuous with the hologram image is reproduced.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: February 11, 2014
    Assignee: Sony Corporation
    Inventors: Nobuhiro Kihara, Akira Shirakura
  • Patent number: 8614842
    Abstract: A holographic replicator configured to mass-manufacture volumetric transmission holograms and including an imaging tank having a holographic master plate opposing a pneumatic absorber. When a segment of a recording film, moveable with respect to the master plate, is placed between the master plate and the pneumatic absorber, the pneumatic absorber is repositioned in space to locks the segment of the recording film between the master plate and the pneumatic absorber.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: December 24, 2013
    Assignee: Prism Solar Technologies Incorporated
    Inventors: Eric D. Aspnes, Jose E. Castillo, Ryan D. Courreges, Paul S. Hauser, Glenn Rosenberg, Juan Manuel Russo
  • Patent number: 8599458
    Abstract: A method and an apparatus are described for producing a volume transmission hologram and/or a volume reflection hologram from a film (10) having a backing foil (12) and a holographic layer (14). In said method, the film (10) is guided over a drum (18), on which the film (10) is brought in contact with the master hologram (22). The master hologram (22) and the film (10) are simultaneously moved through an exposure zone (20). In the exposure zone (20), the film (10) and the master hologram (22) are irradiated with a linearly expanding exposure laser beam (32) in order to reproduce the master hologram (22) in the photopolymer layer (14). Both volume reflection and volume transmission holograms can be produced in the polymer layer (14) of the film (10) that is guided over the drum by means of only one drum (18).
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: December 3, 2013
    Assignee: Hologram Industries Research GmbH
    Inventor: Günther Dausmann
  • Publication number: 20130301090
    Abstract: We describe methods of mass-producing full colour, 3D holograms, potentially incorporating a personalised image, which are particularly suitable for security purposes. Broadly speaking in embodiments a method generates, electronically, an interlaced image comprising a set of different views of a 3D object from different angles. This is projected onto a diffusing screen using coherent light and mapped from the screen into an angularly encoded object beam using a lenticular array. The different views in the angularly encoded object beam are then recorded simultaneously into holographic film using a reference beam.
    Type: Application
    Filed: July 11, 2013
    Publication date: November 14, 2013
    Applicant: BOWATER HOLOGRAPHIC RESEARCH (MALTA) LIMITED
    Inventors: Patrick Flynn, John David Wiltshire, John Henry Wiltshire
  • Publication number: 20130215485
    Abstract: In an illustrative implementation of this invention, an animated holographic display is created as follows: Multiple HPO holograms in the shape of horizontal strips are recorded on an H2 medium. These horizontal strips are vertically displaced from each other. An animated real image is displayed by sequentially illuminating these HPO holograms. In illustrative implementations of this invention, the vertical perspective of at least some adjacent HPO stripes are identical.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 22, 2013
    Applicant: Massachusetts Institute of Technology
    Inventor: Massachusetts Institute of Technology
  • Patent number: 8503052
    Abstract: We describe techniques for recording a holographic image onto holographic recording film, in particular for security holograms. We thus describe a structure having a stack comprising the holographic recording film and a multichannel image generation device under the film. A three-dimensional object (or hologram of a 3D object) is provided, located under the multichannel image generation device. At least a portion of the multichannel image generation device is substantially transparent or absent in a region above the object. A holographic image is recorded in the film by illuminating the stack with laser light. The multichannel image generation device under the film may comprise a volume reflection hologram of a lenticularly generated image. The structure records a hologram of the 3D object in conjunction with a multi-channel holographic image.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: August 6, 2013
    Assignee: Ver-Tec Security Systems Limited
    Inventors: Patrick Flynn, John David Wiltshire
  • Publication number: 20130188233
    Abstract: An apparatus for generating a hologram that may generate a three-dimensional (3D) hologram pattern at a high speed may include a pattern setting unit to set points for which hologram patterns are to be generated with respect to a one-eighth area of an entire area for which a hologram pattern is to be generated, a calculation unit to calculate pattern values for a plurality of reference points selected with respect to the one-eighth area of the entire area, and to generate a pattern for the one-eighth area using recurrent interpolation, and a pattern duplicating unit to complete a pattern for the entire area by duplicating the generated pattern for the one-eighth area.
    Type: Application
    Filed: November 27, 2012
    Publication date: July 25, 2013
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Samsung Electronics Co., Ltd.
  • Patent number: 8405893
    Abstract: A device for producing a reflection hologram by means of a master, which is formed by a substrate on which a saw-toothed shaped structure is formed by molding, mechanical or lithographical methods. The structure has a reflective finish, such that the desired surface is produced on the structure. The light of a laser light source is expanded by means of an optical device, thus enabling a beam having a predetermined beam width to be obtained. The beam radiates the master and is reflected by the structure at an angle ? in relation to the incident beam. Above the smooth surface arranged over the structure a photopolymer-film, containing a photo-sensitive layer that is disposed at a distance in relation to the structure, is arranged and the reflection hologram is produced in the photo-sensitive layer.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: March 26, 2013
    Assignee: Prufbau Dr. Ing. H. Durner GmbH
    Inventors: Peter Bauernschmid, Gerhard Hochenbleicher
  • Patent number: 8345334
    Abstract: A system and method for replicating optical data storage discs (e.g., holographic data storage discs) having multiple layers of data. Master discs providing for respective single layers of data are utilized, and each respective single layer of data from the master discs are replicate onto the optical data storage disc.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: January 1, 2013
    Assignee: General Electric Company
    Inventors: Xiaolei Shi, Kenneth Brakeley Welles, John Erik Hershey, John Anderson Fergus Ross, Brian Lee Lawrence, Zhiyuan Ren, Victor Petrovich Ostroverkhov
  • Patent number: 8263292
    Abstract: A production method is provided by which a copied volume hologram from a multi-layer master is later customized by utilization of the color tuning properties of the light-curable materials used for the application onto personal documents. These holographic individual data, such as a passport photo, are also separately detectable, without the holographic elements copied from the master, that are visible under other viewing angles, impairing the visibility of the individual data. The volume hologram overlay obtained by this method is applied on personal and valuable documents to increase protection against forgery, possesses superimposed optically variable items of information that are separately visible under different viewing angles and give a defined color change under different view angles, wherein at least one of these items of optical information represents individual personal data, in particular a passport photograph.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: September 11, 2012
    Assignee: Hologram Industries Research GmbH
    Inventors: Irina Menz, Guenther Dausmann
  • Publication number: 20120206781
    Abstract: An image recording medium in which a refractive index modulation is recorded in a material in a layer such that, when the hologram recording medium is illuminated from a predetermined angle and a viewpoint is moved horizontally with respect to a normal line, a hologram image having continuous parallax in at least the horizontal direction is reproduced and that, when the viewpoint is moved in a direction with respect to the normal line different from the horizontal direction, another image that is different from and thus is not continuous with the hologram image is reproduced.
    Type: Application
    Filed: April 23, 2012
    Publication date: August 16, 2012
    Applicant: SONY CORPORATION
    Inventors: Nobuhiro Kihara, Akira Shirakura
  • Patent number: 8238005
    Abstract: A hologram medium manufacturing method that includes disposing a first pair of master hologram media with a predetermined interval so that the first pair of the master hologram media face each other; forming a master hologram in the master hologram media by irradiating the first pair of the master hologram media with spherical wave light and reference light so that the spherical wave light and the reference light interfere with each other in the master hologram media. The spherical wave light and the reference light have a focal point between the first pair of the master hologram media. The method also includes disposing a hologram medium between the first pair of the master hologram media; and forming a hologram in the hologram medium by irradiating the first pair of the master hologram media with the reference light.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: August 7, 2012
    Assignee: Sony Corporation
    Inventors: Hisayuki Yamatsu, Kunihiko Hayashi, Norihiro Tanabe
  • Patent number: 8233203
    Abstract: The exposure method includes the steps of: illuminating a hologram recording medium, in which a hologram with a first pattern has been recorded by illumination with a laser beam emitted from a first laser oscillator, with a laser beam emitted from a second laser oscillator; and delivering the laser beam emitted from the second laser oscillator, which has passed through the hologram recording medium, onto a resist, thereby forming a second pattern in the resist. The wavelength of the laser beam used for illuminating the resist through the hologram recording medium in which the hologram is recorded is shorter than the wavelength of the laser beam used for recording the hologram in the hologram recording medium. Further, the wavelength of the laser beam used for illuminating the resist is 1/(0.5×n) (where n is an integer not less than 3) that of the laser beam used for recording the hologram.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: July 31, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hideto Ohnuma
  • Patent number: 8227148
    Abstract: The invention provides a hologram in which a visually unidentifiable microtext or other micropattern of the order of 10 ?m is recorded, and a process for the fabrication of the same. A volume hologram recording material 2 is located on the side of a reflection type volume hologram master 1 onto which copying illumination light 11 is incident, and the copying illumination light 11 incident onto the recording material 2 and light 12 diffracted through the master 1 interfere together in the volume hologram recording material 2 thereby copying the reflection type volume hologram master.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: July 24, 2012
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tsuyoshi Yamauchi, Kenji Ueda, Masachika Watanabe
  • Patent number: 8187771
    Abstract: Described is a process for the production of a multi-layer body having a volume hologram with at least two different items of image information, wherein a photosensitive layer (46) of the multi-layer body is directly or with the interposition of a transparent optical medium (44s, 45) brought into contact with the front side of a master (44), in which interlaced regions with different asymmetrical surface structures or kinoform structures are shaped, which embody the at least two different items of image information. The photosensitive layer (46) and the master are exposed with a coherent light beam (47) whereby a volume hologram is formed in the photosensitive layer (46). Also described are a master for the production of the multi-layer body and a security element having said multi-layer body.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: May 29, 2012
    Assignee: OVD Kinegram AG
    Inventors: René Staub, Wayne Robert Tompkin, Andreas Schilling, Ludwig Brehm, Achim Hansen
  • Patent number: 8179579
    Abstract: HROM replication methods, devices or systems are disclosed herein. Also disclosed herein are articles comprising conical reference (reconstruction) beam hologram elements to generate conical or conical like reference (reconstruction) beams which may be used in such HROM replication methods, devices or systems. Further disclosed herein are articles comprising a target medium which may be used in such HROM replication methods, devices or systems.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: May 15, 2012
    Assignees: InPhase Technologies, Inc., Hitachi, Ltd.
    Inventors: Kevin R. Curtis, Ernest Chuang, Alan Hoskins
  • Publication number: 20120062967
    Abstract: Methods and systems for duplicating holograms, including illuminating a master hologram using a first portion of a beam to generate a data beam, recording a copy hologram using a second portion of the beam and the data beam, where the master hologram and the copy hologram are arranged such that the second portion of the beam avoids the master hologram.
    Type: Application
    Filed: April 4, 2011
    Publication date: March 15, 2012
    Applicant: Zebra Imaging, Inc.
    Inventors: Michael A. Klug, Qiang Huang
  • Publication number: 20120044552
    Abstract: An image recording medium in which a refractive index modulation is recorded in a material in a layer such that, when the hologram recording medium is illuminated from a predetermined angle and a viewpoint is moved horizontally with respect to a normal line, a hologram image having continuous parallax in at least the horizontal direction is reproduced and that, when the viewpoint is moved in a direction with respect to the normal line different from the horizontal direction, another image that is different from and thus is not continuous with the hologram image is reproduced.
    Type: Application
    Filed: November 3, 2011
    Publication date: February 23, 2012
    Applicant: SONY CORPORATION
    Inventors: Nobuhiro Kihara, Akira Shirakura
  • Publication number: 20120038959
    Abstract: A method of manufacturing a master for producing a hologram device is provided. The holographic image reconstructs when the photosensitive film of the hologram device is struck by a beam of light from a wide angle being defined relative to a perpendicular line to a surface of the photosensitive film.
    Type: Application
    Filed: August 13, 2010
    Publication date: February 16, 2012
    Inventors: Joseph J. CIAUDELLI, Thomas Cvetkovich
  • Publication number: 20120026565
    Abstract: Methods and systems for optimizing hologram duplication, including illuminating a first master hologram to generate a first data beam modulated by the first master hologram, recording a first copy hologram using the first data beam and a reference beam, analyzing a light field generated by the first copy hologram, and generating a second master hologram to be used in recording a second copy hologram according to the light field generated and a desired light field.
    Type: Application
    Filed: April 4, 2011
    Publication date: February 2, 2012
    Applicant: Zebra Imaging, Inc.
    Inventor: Michael A. Klug
  • Publication number: 20120019884
    Abstract: Three-dimensional holographic elements are disclosed. Three-dimensional Bragg gratings recorded on bulks of optical material are included in the disclosure. Such elements may be manufactured by placing a three-dimensional bulk of optical material directly behind a recorded master hologram, directing a reference beam onto a master hologram such that a replica of the master hologram is recorded in the optical material. The replica may form the three-dimensional holographic element. The master hologram may be Bragg grating formed on a surface of a transparent substrate.
    Type: Application
    Filed: May 23, 2011
    Publication date: January 26, 2012
    Applicant: PD-LD, INC.
    Inventors: Boris L. Volodin, Vladimir Sinisa Ban
  • Patent number: 8053145
    Abstract: To provide a method for manufacturing a holographic recording medium and a method for manufacturing a semiconductor device, by which effects of distortion or irregularities of the surface of an exposure object can be reduced. The method includes the steps of: splitting a laser beam emitted from a laser oscillator into a first laser beam and a second laser beam, and forming a fringe pattern in a holographic recording medium by illuminating the holographic recording medium with the first laser beam through a mask and illuminating the holographic recording medium with the second laser beam. The mask is a substrate having a light-shielding film formed over its surface.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: November 8, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hideto Ohnuma
  • Patent number: 8045245
    Abstract: A multicolor hologram (e.g., a two-color hologram) is replicated (copied) into a photosensitive layer by masking to produce a copy (replicate) of the hologram in a manner such that the copy is an accurate and true replication of the hologram (e.g., master hologram) and the copy is characterized to possess a high brightness level and color fidelity comparable to that of the multicolor hologram that was replicated. Both flood and scan modes can be employed in the replication.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: October 25, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Brett Ronald Nelson, Michael G. Fickes
  • Publication number: 20110249309
    Abstract: A method of recording an object image of a first hologram as a second hologram is provided. A first hologram is recorded at a first angle of reconstruction and a holographic recording medium is provided. An object beam is directed through the first hologram at the first angle of reconstruction to reconstruct the object image on the recording medium. The recording medium is struck with a reference beam at a second angle of reconstruction to form a wave interference pattern with the object beam. The second angle of reconstruction is between 45 and 90 degrees. The wave interference pattern is recorded. A switch is provided that includes a hologram that has an angle of reconstruction between 45 and 90 degrees. A reproducing light source is positioned to direct light through the hologram at the angle of reconstruction to form a holographic image at a predetermined distance from the hologram. The switch includes a detector that detects the presence of an object proximate to the holographic image.
    Type: Application
    Filed: January 7, 2011
    Publication date: October 13, 2011
    Applicant: HOLOTOUCH, INC.
    Inventors: R. Douglas McPheters, Joseph Ciaudelli, Thomas J. Cvetkovich
  • Publication number: 20110205606
    Abstract: There is provided an exposing device including: a light emitting element array of plural light emitting elements arrayed in a row with a first separation along a predetermined direction; and a hologram element array in which plural hologram elements are multiplex recorded in a recording layer disposed above the light emitting element array, the plural hologram elements corresponding to each of the plural light emitting elements such that diffracted beams of light emitted from the plural light emitting elements are converged to form focused beam spots in a row along the predetermined direction with a second separation smaller than the first separation at an surface to be exposed.
    Type: Application
    Filed: August 19, 2010
    Publication date: August 25, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Jiro MINABE, Yasuhiro OGASAWARA, Keishi SHIMIZU
  • Patent number: 7884984
    Abstract: A multicolor hologram (e.g., a two-color hologram) is replicated (copied) into a photosensitive layer by masking to produce a copy (replicate) of the hologram in a manner such that the copy is an accurate and true replication of the hologram (e.g., master hologram), and the copy is characterized to possess a high brightness level and color fidelity comparable to that of the multicolor hologram that was replicated. Both flood and scan modes can be employed in the replication.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: February 8, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Brett Ronald Nelson, Michael G. Fickes
  • Patent number: 7885164
    Abstract: Provided is an optical information recording method and an optical information recording medium, which can achieve easy duplication in holographic recording. The optical information recording method is for recording information to an optical information recording medium 4 which includes an information recording layer to which information is recorded using holography. In the method, virtual information light 6 composed of information light 2 to which information is added by spatially modulating at least a part of light ray flux emitted from a light source and of recording-specific reference light 3 is generated, and virtual information light 6 and virtual recording-specific reference light 8 are irradiated onto the information recording layer so that information is recorded thereto by interference pattern generated by interference between virtual information light 6 and virtual recording-specific reference light 8.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: February 8, 2011
    Assignee: Optware Corporation
    Inventor: Hideyoshi Horimai
  • Patent number: 7835049
    Abstract: In a reproducing apparatus adapted to reproduce data recorded on a holographic recording medium, a reference light generator generates reference light for illuminating the holographic recording medium, and a coherent light generator generates coherent light having an intensity greater than the absolute value of a minimum amplitude of a reproduced image and having a phase equal to the phase of the reproduced image. An image signal acquisition unit senses the reproduced image produced by illuminating the holographic recording medium with the reference light and the coherent light, and acquires an image signal based on the reproduced image. A square root calculation unit calculates the square root of each of values constituting the image signal. A removal unit removes the component of the coherent light from the calculated square root, whereby the data recorded on the holographic recording medium is correctly reproduced.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: November 16, 2010
    Assignee: Sony Corporation
    Inventors: Masaaki Hara, Mikio Sugiki, Kazutatsu Tokuyama, Mitsuru Toishi, Kenji Tanaka, Kazuyuki Hirooka
  • Patent number: 7800803
    Abstract: 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 multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of hologram without the need to pass through the intermediate stage of the H1 transmission hologram.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: September 21, 2010
    Assignee: View Holographics Ltd.
    Inventors: David Brotherton-Ratcliffe, Florian Michel Robert Vergnes, Alexy Rodin, Mikhail Grichine
  • Publication number: 20100208316
    Abstract: A holographic exposure apparatus may include a main body, a mask stage supported by the body, a holographic mask supported by the mask stage, and a driving unit disposed between the body and mask stage. A holographic exposure apparatus may include an object supported by a substrate stage, a holographic mask spaced apart from the object and supported by a mask stage, a main body supported by the mask stage, and a driving unit disposed between the mask stage and body to control a gap between the mask stage and body. A holographic exposure apparatus may include a main body, a mask stage supported by the body, a holographic mask supported by the mask stage, and a piezoelectric element disposed between the body and mask stage. The body may include a support arm that supports the element. The mask stage may include a seat arm that supports the element.
    Type: Application
    Filed: January 25, 2010
    Publication date: August 19, 2010
    Inventors: Oui Serg Kim, Sung Hwi Cho, Kyen Hee Lee, Sang Joon Hong, Sang Wook Park, In Bae Jang
  • Publication number: 20100208226
    Abstract: A holographic exposure apparatus may include an object to be exposed, a holographic mask on which a pattern to be transferred onto the object is formed, a stage to support the mask, and a gap adjustment unit disposed between the mask and stage in order to move the mask relative to the stage. A holographic exposure apparatus also may include an object to be exposed, a mask spaced apart from the object, a holder that holds the mask, and a stage on which the holder is movably mounted such that a gap between the mask and object is adjusted. In addition, a holographic exposure apparatus may include a stage, a prism supported by the stage, a mask spaced apart from the prism and supported by the stage, and a gap adjustment unit disposed between the mask and stage in order to move the mask relative to the prism.
    Type: Application
    Filed: January 25, 2010
    Publication date: August 19, 2010
    Inventors: Oui Serg Kim, In Bae Jang, Sung Jin Lee, Sung Hwi Cho, Kyen Hee Lee, Sang Joon Hong, Sang Wook Park
  • Patent number: 7742210
    Abstract: An apparatus for replicating holographically recorded data, comprising a holographic master media having holographically recorded data thereon; a holographic copy media; a light source for generating a master reference beam and a copy reference beam, coherent with the first object beam, the first master reference beam incident on the holographic master media, the holographic master media diffracting the master reference beam to provide a first object beam; the copy reference beam incident on the holographic copy media; and a first optical relay system, disposed between the holographic master media and the holographic copy media, for relaying the first object beam from the holographic master media to the holographic copy media, the holographic copy media recording an interference pattern between the first object beam and the copy reference beam, thereby replicating at least a portion of holographically recorded data.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: June 22, 2010
    Assignee: STX Aprilis, Inc.
    Inventors: Daniel H. Raguin, David A. Waldman, George Barbastathis
  • Patent number: 7710622
    Abstract: The invention relates to a color hologram display an image of a three-dimensional object and a hologram image of a pattern of plane characters, images or the like are recorded in the same volume type hologram photosensitive material in a superposed or multiplexed fashion. A color hologram display 27? comprising a combined reflection and volume type of single layer, wherein a color pattern 29g of plane characters, images or the like and a color three-dimensional subject image O? are reconstructably recorded while spatially superposed one upon another.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: May 4, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Emi Takabayashi, Daijiro Kodoma, Masachika Watanabe
  • Patent number: 7710623
    Abstract: A security hologram is disclosed that is invisible to a human eye or to various optical detectors until the hologram is optically coupled to a suitable modifier (e.g., a prism). Also disclosed is a method of recording the security hologram and a method of using the hologram in security applications to establish authenticity of article(s).
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: May 4, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Steven William MacMaster
  • Patent number: 7705332
    Abstract: Direct patterning of nanometer scale features by interferometric lithography using a 46.9 nm laser is described. Multiple exposures using a Lloyd's mirror interferometer permitted printing of arrays having 60 nm FWHM features.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: April 27, 2010
    Assignee: Colorado State University Research Foundation
    Inventors: Mario C. Marconi, Przemyslaw W. Wachulak, Carmen S. Menoni, Jorge J. Rocca
  • Publication number: 20100067076
    Abstract: A holographic printer, a hologram copier and a combined holographic printer and hologram copier system is disclosed. The printer, copier and combined system comprise a pulsed RGB laser system comprising three short cavity oscillators. With the holographic printer digital image data is encoded onto three LCOS reflective SLM displays. The combined holographic printer and hologram copier system comprises a single RGB laser system.
    Type: Application
    Filed: April 27, 2007
    Publication date: March 18, 2010
    Inventor: David Brotherton-Ratcliffe
  • Patent number: 7643188
    Abstract: A method of recording an exposure pattern in a recording layer of a holographic mask, using an original reticle that has the exposure pattern formed therein, the recording method comprising: illuminating a first recording light and a first reference light to the recording layer simultaneously, the first recording light being illuminated through an original reticle placed opposite to the holographic mask with a first gap therebetween, the first reference light being illuminated to the recording layer at a first incident angle; and illuminating a second recording light and a second reference light to the recording layer simultaneously, the second recording light being illuminated through the original reticle placed opposite to the holographic mask with a second gap therebetween, the second gap being different from the first gap, the second reference light being illuminated to the recording layer at a second incident angle.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: January 5, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Chiharu Iriguchi