Having Multiple Object Beam Or Diffuse Object Illumination Patents (Class 359/28)
  • Patent number: 10683984
    Abstract: An illuminating device for vehicles with a housing in which an optical unit with a light source and an optical unit with a reflector and a hologram element are arranged to create a specified light diffusion. The hologram element runs at a right angle to a main radiation direction (H) in front of the illuminating device. The reflector is designed to be a deflecting reflector to deflect the light emitted at an obtuse angle (?) in the direction of the hologram element. The deflecting reflector is arranged outside of a horizontal plane that crosses one of the glare edges of the hologram element. The deflecting reflector is designed as a prism reflector that has a multitude of prism elements arranged in columns and/or rows.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: June 16, 2020
    Assignee: Hella GmbH & Co. KGaA
    Inventor: Martin Mügge
  • Patent number: 10684113
    Abstract: An optical detection device includes a light source emitting a light beam whose electromagnetic field, a means adapted to divide the beam into a first beam defining a first reference pathway and a second beam defining a second sample pathway, a modulation system frequency-shifting the electromagnetic fields of the two beams, a beam coupler adapted to collect the beams, an optical detection system adapted to detect the signal arising from the interference between the beams and coupled via the coupler, the sample being placed in the sample pathway, the optical detection system comprising an optical detector and a device adapted to measure the amplitude and the phase of the signal, an opaque screen comprising an optical aperture is placed at the level of a zone of a sample, in proximity to the sample, in the sample pathway.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: June 16, 2020
    Assignee: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Yannick De Wilde, Lèo Greusard, Gilles Tessier, Sylvain Gigan, Samuel Gresillon, Kamel Bencheikh
  • Patent number: 10509153
    Abstract: An optical device including a first layer of a total internal reflection (TIR) waveguide and a second layer of the TIR waveguide is disclosed. The second layer of the TIR waveguide may be coupled to the first layer. The second layer may include an output coupling device configured to reflect light toward an exit face of the TIR waveguide. The output coupling device may include one or more diffractive gratings. The optical device may also include an input coupling face disposed on a non-diffractive edge portion the first layer or the second layer or both the first and second layer. The input coupling face may be configured to receive image light. Another optical device may include an input coupling face disposed on a non-diffractive input coupling element. The non-diffractive input coupling element may be positioned in an optical path for directing the image light to the TIR waveguide.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: December 17, 2019
    Assignee: Akonia Holographics LLC
    Inventors: Adam Urness, Kenneth E. Anderson, Friso Schlottau, Mark R. Ayres
  • Patent number: 10443799
    Abstract: A vehicle lighting system includes a light source, a beam expander, a light processing unit, and a non-uniform projection unit. The light source emits at least one collimated light beam, and the beam expander is located in a propagation path of the collimated light beam for receiving and expanding the collimated light beam to form an expanded light beam. The light processing unit is located in a propagation path of the expanded light beam for receiving the expanded light beam and a control signal and adjust an intensity profile of the expanded light beam according to the control signal, and a non-uniform projection unit converts the expanded light beam adjusted by the processor into a light beam having a non-uniform intensity profile.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: October 15, 2019
    Assignee: Young Optics Inc.
    Inventor: Jyh-Horng Shyu
  • Patent number: 10088140
    Abstract: An eye-safe optoelectronic module includes a light source mounted on a support and operable to generate light along an emission axis. An eye-safe substrate has an eye-safe substrate refractive index and includes at least one diffusive surface. The eye-safe substrate is mounted such that the emission axis is intercepted by the diffusive surface. An optical assembly includes at least one optical element, is composed of an optical material and is mounted on the diffusive surface of the eye-safe substrate such that the optical material fills a diffusive surface of the eye-safe substrate. The optical assembly has an optical assembly refractive index that is substantially the same as the eye-safe substrate refractive index.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: October 2, 2018
    Assignee: Heptagon Micro Optics Pte. Ltd.
    Inventors: Martin Lukas Balimann, Matthias Gloor
  • Patent number: 9746776
    Abstract: A fluoropolymer-photoresist composition containing fluorinated polymer for containment of liquid inks in the printing of electronic devices. Methods of applying and treating the fluoropolymer-photoresist composition containing fluorinated polymer to provide low surface energy before and after processing and development of the photoresist.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: August 29, 2017
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Hjalti Skulason, Raia Finc, Ines Wyrsta, Smita Dayal, Steven Donald Dascomb
  • Patent number: 9478245
    Abstract: The present techniques provide methods and systems for recording micro-holograms on a holographic disk using a plurality of counter-propagating light beams in parallel. The parallel counter-propagating light beams overlap to form interference patterns on a data layer and over multiple data tracks in the holographic disk. Rotating the disk enables the parallel recording of micro-holograms over multiple data tracks, thus reducing recording time. Further, the illumination pattern may include illuminated spots and non-illuminated regions, such that each illumination spot may cover a relatively small fraction of the data layer plane, possibly controlling the depth spread of the recorded micro-hologram. In some embodiments, data in the parallel signal beams may be retrieved from a master holographic disk or may be modulated into the parallel signal beams.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: October 25, 2016
    Assignee: General Electric Company
    Inventors: Victor Petrovich Ostroverkhov, Pierino Gianni Bonanni, Xiaolei Shi, Zhiyuan Ren, Hua Xia, Xuefeng Wang, Xinghua Wang
  • Patent number: 9172949
    Abstract: A display apparatus that may generate a high density light field image is provided. The display apparatus may identify an eye position of a user and set a virtual viewing window around the eye of the user. The display apparatus may generate a directional light corresponding to the viewing window and generate a high density light field image.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: October 27, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Kyung Nam, Ju Yong Park, Kyu Young Hwang, In Woo Ha
  • Patent number: 9152040
    Abstract: In accordance with some aspects of the present disclosure, a maskless interferomeric lithography system for fabricating a three-dimensional (3D) photonic crystal using a multiple two-beam-exposures is disclosed. The system can comprise an illumination system comprising an optical arrangement operable to receive radiation from a radiation source and provide three or more tilted two-beam interference pattern exposures to be combined into a three-dimensional pattern; and a substrate operable to be supported by a substrate table, wherein the substrate comprises a photoresist formed on a top surface of the substrate and operable to receive the three-dimensional pattern and wherein means are provided to adjust the position of the substrate in all six mechanical degrees of freedom.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: October 6, 2015
    Assignee: STC.UNM
    Inventors: Steven R. J. Brueck, Alexander K. Raub
  • Patent number: 8983814
    Abstract: A laser device, having an optical cavity containing a gain medium, a total reflectance reflector positioned within the optical cavity, and a partial reflectance reflector positioned within the optical cavity in a juxtaposed relationship to the total reflectance reflector. The topology of the reflectors are defined by a convergent reflector topology function that converges light emitted within the optical cavity to a laser beam that exits the optical cavity through the partial reflectance reflector by a series of reflections between the total reflectance reflector and the partial reflectance reflector. The laser beam emitted from the optical cavity has a predefined pattern for a given convergent reflector topology.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: March 17, 2015
    Inventor: Hilbrand Harlan-Jacob Sybesma
  • Patent number: 8960960
    Abstract: The present invention provides an illumination beam shaping system, which enables the emergent surface of a lighting system of light excitation chips to emit a light beam of uniform illumination brightness. The present invention uses a dividing device, structured from curved lenses arranged in an array, to effect a pre-dividing operation on the total quantity of light from a light excitation chip, after which post-diffusion is carried out to form a light beam with uniform illumination brightness. A plurality of conical light beams in an array are shaped and emerge from an output side, and the bottom portion of each of the conical light beams form an actual optical surface, which act on an optical diffusing component for refraction and diffusion processing, thereby enabling the emergent face of the system to obtain uniform illumination brightness.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: February 24, 2015
    Inventor: Ching-Wei Wei
  • Patent number: 8956786
    Abstract: The invention is concerned with a volume hologram medium obtained by multiple recording of holograms, which is improved in terms of just only security for forgery prevention but also aesthetics. A volume hologram medium 29? comprises a reflection hologram in which a stereoscopic image of a three-dimensional object and an image of a plane pattern of a mask plate are recorded by interference of the same reference light beams having the same angle of incidence and the same wavelength with object light beams having mutually different angles of incidence. The stereoscopic image of the three-dimensional object is reconstructed in the form of diffracted light 31 in a singlecolor and in angle relations close to recording conditions, and the image of a plane pattern of the mask plate is reconstructed as diffracted light 32b, 32?b at various angles of incidence of white illumination light 30 and in different colors depending on those angles of incidence.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: February 17, 2015
    Assignee: DAI Nippon Printing Co., Ltd.
    Inventor: Daijiro Kodama
  • Patent number: 8848271
    Abstract: Described are a method and apparatus for high-speed phase shifting of an optical beam. A transparent plate having regions of different optical thickness is illuminated by an optical beam along a path of incidence that extends through the regions. The transparent plate can be moved or the optical beam can be steered to generate the path of incidence. The optical beam exiting the transparent plate has an instantaneous phase value according to the region in which the optical beam is incident. Advantageously, the phase values are repeatable and stable regardless of the location of incidence of the optical beam within the respective regions, and phase changes at high modulation rates are possible. The method and apparatus can be used to modulate a phase difference of a pair of coherent optical beams such as in an interferometric fringe projection system.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: September 30, 2014
    Assignee: Dimensional Photonics, Inc.
    Inventors: Robert F. Dillon, Neil H. K. Judell, Timothy I. Fillion, Gurpreet Singh, Nathan E. Wallace
  • Patent number: 8736675
    Abstract: In one implementation, a system includes a multi-core processor and an optical display with a plurality of hogels. Each hogel is configured to radiate light in a plurality of directions, with controllable intensities in each of the plurality of directions. The multi-core processor is coupled to the optical display and configured to control the hogels. The multi-core processor includes at least two cores, an on-chip memory, and a master processor in a single integrated circuit package. The master processor may be a general-purpose on-chip processor, such as a core in the multi-core processor, that is used to coordinated operations of the other cores. Each of the cores is configured to receive hogel data and to generate signals for a corresponding subset of the plurality of hogels.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: May 27, 2014
    Assignee: Zebra Imaging, Inc.
    Inventors: Mark E. Holzbach, Mark E. Lucente, Thomas L. Burnett, III
  • Patent number: 8699111
    Abstract: Described are a method and apparatus for high-speed phase shifting of an optical beam. A transparent plate having regions of different optical thickness is illuminated by an optical beam along a path of incidence that extends through the regions. The transparent plate can be moved or the optical beam can be steered to generate the path of incidence. The optical beam exiting the transparent plate has an instantaneous phase value according to the region in which the optical beam is incident. Advantageously, the phase values are repeatable and stable regardless of the location of incidence of the optical beam within the respective regions, and phase changes at high modulation rates are possible. The method and apparatus can be used to modulate a phase difference of a pair of coherent optical beams such as in an interferometric fringe projection system.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: April 15, 2014
    Inventors: Robert F. Dillon, Neil H. K. Judell, Timothy I. Fillion, Gurpreet Singh, Nathan E. Wallace
  • Patent number: 8630825
    Abstract: A method of determining the surface topology of a reflector for convergence of a beam incident thereupon.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: January 14, 2014
    Inventor: Hilbrand Harlan-Jacob Sybesma
  • Patent number: 8625184
    Abstract: An exposure apparatus includes a substrate in which plural light-emitting devices are arrayed one-dimensionally or two-dimensionally; and a hologram recording layer that is disposed on the substrate, plural holograms being recorded in the hologram recording layer by holographic interference between a first beam and a second beam such that a predetermined number of beam spots are disposed in the hologram recording layer in a predetermined array direction according to a portion of light-emitting devices, the portion of light-emitting devices being selected as emitters from the plural light-emitting devices, the beam spot being formed by a light beam of the second beam, the first beam passing through an optical path of diffusion light that passes through the emitter, the second beam passing through an optical path of convergent light that converges at a predetermined distance outside the optical path of the first beam.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: January 7, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Katsunori Kawano, Jiro Minabe
  • Publication number: 20130194646
    Abstract: Optical conveyors providing motive force to objects. The optical conveyors are one-sided and are able to exert forces on illuminated objects that are directed opposite to the direction of the light's propagation.
    Type: Application
    Filed: January 29, 2013
    Publication date: August 1, 2013
    Applicant: New York University
    Inventor: New York University
  • Patent number: 8472095
    Abstract: A method for producing true three dimension imagery includes positioning an object to be imaged and directing imaging laser beams to impinge upon the object. Splitting the imaging laser beams after the imaging laser beams have impinged upon the object is then accomplished, while redirecting the split imaging beams to a recording substrate.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: June 25, 2013
    Assignee: Hazen Paper Company
    Inventors: Keith R. McCrodden, John H. Hazen
  • Patent number: 8444271
    Abstract: The disclosure provides an apparatus for reducing speckle in a projection visual display (PVD) system, a method of reducing visible speckle in a PVD system and a PVD system incorporating the method or apparatus. In one embodiment, the apparatus includes a diffuser interposable in an optical path of a PVD system and a diffuser actuator having a single drive axis configured to cause the diffuser to travel in a Lissajous curve at least partially transverse to the optical path.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: May 21, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: James C. Dunphy, Stephen W. Marshall
  • Patent number: 8427725
    Abstract: The present invention relates to a light modulating device, comprising a SLM and a pixelated optical element, in which a group of at least two adjacent pixels of the SLM in combination with a corresponding group of pixels in the pixelated optical element form a macropixel, the pixelated optical element being of a type such that its pixels comprise a fixed content, each macropixel being used to represent a numerical value which is manifested physically by the states of the pixels of the SLM and the content of the pixels of the pixelated optical element which form the macropixel.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: April 23, 2013
    Assignee: Seereal Technologies S.A.
    Inventors: Gerald Futterer, Bo Kroll, Steffen Buschbeck
  • Patent number: 8339695
    Abstract: The invention relates to a controllable illumination device for an autostereoscopic or holographic display, which illumination device contains an illumination matrix of primary light sources having at least one luminous element per light source and a controllable light modulator (SLM) and a reproduction matrix. A computer-generated hologram (CGH) illuminated by the primary light sources (11, . . . , 1n) is coded on the controllable light modulator (SLM) and generates, in at least one plane downstream of the SLM, a matrix—reconstructed from the computer-generated hologram (CGH)—of secondary light sources (2) having a secondary light distribution for the purpose of illuminating the reproduction matrix (4) and for the purpose of focussing in light bundles onto each eye of the viewer via an imaging matrix. The CGH is calculated and reconstructed on the basis of the number of and the positions of the viewers and the system parameters.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: December 25, 2012
    Assignee: Seereal Technologies GmbH
    Inventors: Ralf Haussler, Armin Schwerdtner
  • Patent number: 8272750
    Abstract: A projection-type image display apparatus that projects an image onto a screen and includes a laser light source, an optical engine, a projection lens, and a control unit. The laser light source includes a plurality of light source units that respectively emit laser beams of different wavelengths. The optical engine combines the laser beams received from the light source and forms an image. An optical sensor is arranged in the optical engine to detect a physical property of a uniformly-scattered laser beam and outputs a physical property signal indicative of the detected physical property to the control unit. The control unit controls output powers of the light source units based on the physical property signal.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: September 25, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventor: Taisuke Murata
  • Patent number: 8264756
    Abstract: An apparatus for recording holograms on an optical medium, in particular on an optically addressable spatial light modulation device is disclosed. For this purpose, the apparatus comprises an illumination device for emitting light, an optical medium, an image source having at least one modulation element, and an arrangement of microlenses. In this case, the arrangement of microlenses is arranged at a distance from the optical medium in such a way that the image focal points of the microlenses lie on the optical medium, such that the hologram can be generated on the optical medium.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: September 11, 2012
    Assignee: Seereal Technologies S.A.
    Inventors: Jean-Christophe Olaya, Grigory Lazarev
  • Patent number: 8201949
    Abstract: A projection-type image display apparatus that projects an image onto a screen and includes a laser light source, an optical engine, a projection lens, and a control unit. The laser light source includes a plurality of light source units that respectively emit laser beams of different wavelengths. The optical engine combines the laser beams received from the light source and forms an image. An optical sensor is arranged in the optical engine to detect a physical property of a uniformly-scattered laser beam and outputs a physical property signal indicative of the detected physical property to the control unit. The control unit controls output powers of the light source units based on the physical property signal.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: June 19, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventor: Taisuke Murata
  • Patent number: 8064114
    Abstract: An illumination device for uniformly illuminating an image generating micro-display that includes a coherent light source, a beam shaping and speckle reduction device located on an optical path between said coherent light source and said image generating micro-display, wherein the beam shaping and speckle reduction device includes a dynamic diffractive optical element, and a processor which is configured to control said dynamic diffractive optical element so that a sequence of different hologram patterns is generated on said dynamic diffractive optical element, the different hologram patterns being uncorrelated to each other.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: November 22, 2011
    Assignee: SONY Deutschland GmbH
    Inventor: Zoltan Facius
  • Patent number: 8031403
    Abstract: The invention provides an apparatus for reducing speckle in a projection visual display (PVD) system, a method of reducing visible speckle in a PVD system and a PVD system incorporating the method or apparatus. In one embodiment, the apparatus includes a diffuser interposable in an optical path of a PVD system and a diffuser actuator having a single drive axis configured to cause the diffuser to travel in a lissajous curve at least partially transverse to the optical path.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: October 4, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: James C. Dunphy, Stephen W. Marshall
  • Patent number: 8025410
    Abstract: A projection device includes a diffuser and a light source system. The light source system includes a light source, a dichroic element, an actuator, and a reflector. The light source generates a light beam that is directed to the dichroic element. The dichroic element forms first and second individual light beams from the light beam. The first individual light beam is transmitted to the diffuser. The second individual light beam is reflected from the reflector to the diffuser. The actuator is fixed to the reflector and has a removal frequency exceeding 20 Hz.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: September 27, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chiu-Ping Chen
  • Patent number: 7995257
    Abstract: A holographic storage medium includes a hologram including data recorded in a plurality of pages in a superimposed fashion by interference of a signal beam and a reference beam, and an additional page recorded between two adjacent pages in the plurality of pages, wherein a portion of the data is recorded to a region of the additional page having a relatively small selectivity compared to other regions of the additional page without recording on the other regions.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: August 9, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Taek-seong Jeong
  • Patent number: 7889407
    Abstract: An apparatus for producing a duplicate hologram recording medium includes: a positioning section configured to place the duplication master and the duplicate hologram recording medium at predetermined relative positions; an angle selective plate arranged between the duplication master and the duplicate hologram recording medium, the angle selective plate having an angle selective film whose transmittance changes in accordance with an incidence angle of a light beam; and a duplicating-reference-beam generating and radiating section generating a duplicating reference beam, and radiating the duplicating reference beam at such an incidence angle that the duplicating reference beam is transmitted through a predetermined region of a recording layer of the duplication master and is reflected by the angle selective film.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: February 15, 2011
    Assignee: Sony Corporation
    Inventors: Kageyasu Sako, Tomiji Tanaka
  • Publication number: 20110001980
    Abstract: An optical phase processing system for a scattering medium. A first beam has a direction and a wavefront and the first beam is configured to enter a holographic recording medium. A scattering medium is illuminated by a signal beam generating at least one scattered beam. An interference pattern is recorded from the at least one scattered beam and the first beam. A second beam is generated in a direction opposite to the direction of the first beam, the second beam having a wavefront and a phase substantially opposite to a phase of the wavefront of the first beam, and the second beam is configured to enter the holographic recording medium. The second beam and the interference pattern interact to generate at least one reconstructed beam having a phase substantially opposite to a phase of the at least one scattered beam, and the at least one reconstructed beam is configured to be viewable through the scattering medium.
    Type: Application
    Filed: September 20, 2010
    Publication date: January 6, 2011
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Zahid Yaqoob, Emily McDowell, Changhuei Yang
  • Publication number: 20110002021
    Abstract: A method for producing true three dimension imagery includes positioning an object to be imaged and directing imaging laser beams to impinge upon the object. Splitting the imaging laser beams after the imaging laser beams have impinged upon the object is then accomplished, while redirecting the split imaging beams to a recording substrate.
    Type: Application
    Filed: July 2, 2010
    Publication date: January 6, 2011
    Applicant: HAZEN PAPER COMPANY
    Inventors: Keith R. McCrodden, John H. Hazen
  • Patent number: 7767955
    Abstract: An image detecting apparatus includes an illumination system and a sensing system. The illumination system is for providing a light beam to a working surface to generate a reflected light beam by the working surface. The sensing system includes a sensing unit and a condensing unit. The sensing unit is disposed on a transmission path of the reflected light beam reflected by the working surface for receiving the reflected light beam. The condensing unit is disposed between the sensing unit and the working surface, wherein an optical axis of the condensing unit is deviated from a main optical axis of the reflected light beam.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: August 3, 2010
    Assignee: PixArt Imaging Inc.
    Inventors: Tien-Chia Liu, Hung-Ching Lai, Hui-Hsuan Chen
  • Patent number: 7697178
    Abstract: A recording medium records therein image data for distributing contents as element holograms with interference fringes generated by interference between an object beam representing the image data and a reference beam. The image data to be distributed which are recorded as the element holograms in the recording medium are reproduced by applying reference beams to the recording medium.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: April 13, 2010
    Assignee: Sony Corporation
    Inventor: Yoshiyuki Teraoka
  • Patent number: 7675664
    Abstract: A recording medium records therein image data for distributing contents as element holograms with interference fringes generated by interference between an object beam representing the image data and a reference beam. The image data to be distributed which are recorded as the element holograms in the recording medium are reproduced by applying reference beams to the recording medium.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: March 9, 2010
    Assignee: Sony Corporation
    Inventor: Yoshiyuki Teraoka
  • Patent number: 7636171
    Abstract: A method is provided for monitoring degradation of a data storage medium. Multiple reactive elements are provided in the data storage medium. Properties of each one of these elements is determined, prior or subsequent to data being stored in the medium, to generate a baseline map of the medium. Updated properties of at least one of the elements are determined in order to generate an updated map of the medium. A determination can then be made as to whether degradation of the medium has occurred by comparing the baseline map to the updated map.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: December 22, 2009
    Assignee: Storage Technology Corporation
    Inventors: Christophe N. Sigel, Michael L. Leonhardt
  • Patent number: 7633661
    Abstract: A hologram recording apparatus includes a light source for irradiating coherent light, light separator for separating the coherent light into light for reference beam and light for signal beam, optical path changer for changing an optical path of each light separated by the light separator so that the reference beam and the signal beam may be irradiated simultaneously onto an optical recording medium, a spatial light modulator disposed in the optical path of the light for the signal beam for modulating the light for the signal beam in accordance with a supplied recording signal to create signal beam for recording a hologram, and diffused light irradiator for irradiating diffused light simultaneously with the reference beam at least onto an area of the optical recording medium where the reference beam is irradiated.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: December 15, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Shin Yasuda, Jiro Minabe, Yasuhiro Ogasawara, Kazuhiro Hayashi, Hisae Yoshizawa, Koichi Haga, Katsunori Kawano
  • Publication number: 20090185247
    Abstract: A holographic data storage medium, and a method and an apparatus for recording/reproducing holographic data by using the medium includes a substrate; manifold reflective layer between which a part of a signal beam is capable of being reflected at least one time and then being emitted from the manifold reflective layer; and a holographic recording layer in which a plurality of information layers are capable of being formed in a depth direction of the holographic recording layer, wherein interference patterns of a rest of the signal beam and a reference beam constitute each of the plurality of information layers.
    Type: Application
    Filed: September 5, 2008
    Publication date: July 23, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Taek-seong Jeong, Jae-cheol Bae
  • Patent number: 7557970
    Abstract: A hologram recording method, which records signal light onto an optical recording medium as a hologram, includes: placing a signal light region, which generates signal light, and a reference light region, which generates reference light, symmetrically with respect to an optical axis of coherent light by displaying, on a spatial light modulator which spatially modulates the incident coherent light, a pattern which divides a modulating region into a plurality of regions; generating signal light and reference light by modulating the incident coherent light by the spatial light modulator; simultaneously and coaxially illuminating, onto a reflecting-type optical recording medium, the signal light and the reference light generated from the signal light region and the reference light region disposed symmetrically to one another; and recording the signal light on the optical recording medium as a hologram.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: July 7, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Makoto Furuki, Katsunori Kawano, Shin Yasuda, Jiro Minabe, Koichi Haga, Yasuhiro Ogasawara, Kazuhiro Hayashi, Hisae Yoshizawa
  • Patent number: 7545279
    Abstract: A condition analysis apparatus capable of grasping the condition of an object easily and accurately is provided. The condition analysis apparatus 1 includes a three-dimensional sensor 10 for measuring sampling-point-moves in the height direction of an object 2 existing in a target area at a plurality of sampling points, and area definition means 22 for defining an area where a plurality of the sampling-point-moves are in the generally same phase. The thus constructed condition analysis apparatus 1 can grasp the condition of the object 2 easily and accurately. Preferably, the condition analysis apparatus 1 includes information output means 40 for outputting information of an area including the area defined by the area definition means 22.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: June 9, 2009
    Assignees: Sumitomo Osaka Cement Co., Ltd., Keio University
    Inventors: Isao Sato, Tomofumi Nishiura, Masato Nakajima, Kazuhiro Mimura, Yasuhiro Takemura, Kei Katou, Toshiharu Takesue
  • Publication number: 20090128875
    Abstract: A method of retrieving phase information from input intensity information, representative of a target image, in which a Fourier transform is performed on data and the result used in forming a phase estimate, the phase estimate being inverse Fourier transformed, thereby producing magnitude and phase replay, and wherein not only is the phase reply component but also data derived from the magnitude replay component, iteratively fed back.
    Type: Application
    Filed: November 5, 2008
    Publication date: May 21, 2009
    Applicant: Cambridge Enterprise Limited
    Inventors: Jamieson Christmas, William Alden Crossland
  • Patent number: 7483189
    Abstract: Even when a tilt error is caused in a holographic memory in a direction perpendicular to a surface including optical axes of a signal beam and a reference beam, the signal beam and the reference beam are allowed to enter the holographic memory at adequate angles relative thereto at all times by suppression of the tilt error. During recording and reproducing operations, the reference incident angle of the reference beam in the radial tilt direction is detected based on a received light state. A tilt actuator for displacing the holographic memory medium in the radial tilt direction is driven to adjust an incident angle of the reference beam in the radial tilt direction to the reference angle Sr. Then, the signal beam and the reference beam are emitted to the holographic memory medium to execute the recording and reproducing operations.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: January 27, 2009
    Assignees: Sanyo Electric Co., Ltd., Inphase Technologies
    Inventors: Yoshiyuki Matsumura, Ian Russell Redmond, Keith Malang
  • Patent number: 7477433
    Abstract: A hologram-recording method including recording a reflection-type volume hologram onto an optical recording medium by irradiating the optical recording medium with a modulated beam obtained by spatially modulating a laser beam and a diffused beam obtained by diffusing the modulated beam, coaxially but from different sides of the optical recording medium, respectively. The invention provides a hologram-recording method, an optical recording medium, and a hologram-recording device that enables on-demand recording of a reflection-type volume hologram which reliably prohibits forgery or alteration with a simple device configuration.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: January 13, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Shin Yasuda, Yasuhiro Ogasawara, Jiro Minabe, Katsunori Kawano, Kazuhiro Hayashi, Hisae Yoshizawa, Koichi Haga
  • Patent number: 7416306
    Abstract: A reflection-type laser projector (100) projects modulated laser beams outputted from a laser projection unit (40), on a screen, wherein a reflector (112) as a constituent of the screen (110) has reflection characteristics of reflecting, among the incident light, only laser beams of three colors of red, blue, and green, which are projected from the laser projection unit (40) and light in the neighboring wavelength band, and transmitting light in other wavelength bands, thereby preventing pictures on the screen (110) from becoming hard to be seen due to effects of indoor illumination or light from outdoors.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: August 26, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuhisa Yamamoto, Kiminori Mizuuchi, Yasuo Kitaoka, Ken'ichi Kasazumi
  • Patent number: 7364300
    Abstract: A 3-D display may comprise a rotating optical diffuser for displaying 3-D parallax images in specific substantially unidirectional viewing zones as the rotating optical diffuser rotates; and a projector for projecting images through the rotating optical diffuser.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: April 29, 2008
    Assignee: Actuality Systems, Inc.
    Inventors: Gregg E. Favalora, Oliver S. Cossairt
  • Publication number: 20070206114
    Abstract: An image capturing apparatus illuminate and captures an image of an object using reflected light from the object. In the apparatus, a plurality of light-emitting devices are mounted in the periphery of an image sensor, and the light of the plurality of light-emitting devices is guided to an image capturing region by a light guide member for illumination. On the image capturing apparatus having the image capturing system disposed close to the illumination system, a hood is provided for optically intercepting the image capturing system from the illumination system, with a flange disposed thereon. The light reflected on the upper face of a filter can be intercepted from being incident on an image capturing system unit. Accordingly, output light not irradiating the object and causing an image capturing noise can be intercepted, which is effective for a clear photographed image.
    Type: Application
    Filed: November 2, 2006
    Publication date: September 6, 2007
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Hiroyuki Tanaka, Yoshio Yoshizu, Takashi Yoshida, Kouichi Matsuo, Isao Iwaguchi
  • Patent number: 7218597
    Abstract: In the disclosed holographic recording method, when multiplex recording of data of a plurality of pages is performed, exposure time of a hologram of a final page to be recorded is fixed irrespective of a degree of multiplicity while an exposure time of each page is changed and diffraction efficiencies of the holograms of the plurality of pages becomes equal.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: May 15, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Shin Yasuda, Katsunori Kawano, Jiro Minabe, Tatsuya Maruyama, Norie Matsui
  • Patent number: 7187481
    Abstract: 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 information bearing light beams in an information bearing light beam arm of a data recording system and a plurality of reference light beams in a reference light beam arm of the data recording system are mutually interfered to store a plurality of spatially separate, spatially modulated light intensity patterns in a holographic data storage medium in a data recording operation. During the data recording operation, the plurality of information bearing light beams are repeatedly circulated through the holographic data storage medium using a resonant cavity formed along the information bearing light beam arm of the holographic recording system.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: March 6, 2007
    Assignee: Storage Technology Corporation
    Inventors: Christophe Sigel, Michael L. Leonhardt
  • Patent number: 7099058
    Abstract: In the method for producing holograms, a plurality of images displayed on a spatial optical modulating element 6 is used as the object light. Through a lens array 7 composed of a plurality of lenses disposed corresponding to each of the images, which are included in the object light, and a reducing optical system 9 and 10 for reducing the object light emitted from the lens array 7, the object light is made to irradiate a recording surface 11 along with a reference light; thereby interference light between the object light and the reference light is recorded on the recording surface 11. Between the spatial optical modulating element 6 and the lens array 7, partitions 15 for separating the respective images are provided; thereby noise is reduced.
    Type: Grant
    Filed: November 29, 2002
    Date of Patent: August 29, 2006
    Assignees: Hamamatsu Photonics K.K., Artnow Ltd.
    Inventors: Tamiki Takemori, Kenji Kon
  • Patent number: 7088488
    Abstract: The invention is directed to a spatial light modulator device that can improve holographic data recording systems, and various methods and systems incorporating the device. The spatial light modulator device includes a diffusive element to diffuse or scatter a data encoded object beam. For example, the diffusive element may comprise a two-layer diffusive laminate formed, a polymer dispersed liquid crystal material, or another diffusive material. The diffusive element can be formed over the output window, or may comprise the output window of the spatial light modulator device. In any case, the diffusive element can slightly scatter the data encoded object beam, which can significantly reduce undesirable zero-order burning effects in a holographic medium positioned in proximity to a Fourier transform plane.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: August 8, 2006
    Assignee: Imation Corp.
    Inventor: Jathan D. Edwards