Composition Or Product Or Process Of Making The Same Patents (Class 430/2)
  • Patent number: 9760060
    Abstract: The invention relates to a photopolymer formulation comprising a polyol component, a polyisocyanate component, a writing monomer, and a photoinitiator, containing a coinitiator and a dye having the formula F An, where F stands for a cationic dye and An? stands for an anion, wherein the dye having the formula F An comprises a water absorption of =5%. The invention further relates to a holographic medium, in particular in the form of a film, containing a photopolymer formulation according to the invention, to the use of such a medium for recording holograms, and to a special dye that can be used in the photopolymer formulation according to the invention.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: September 12, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Horst Berneth, Thomas Roelle, Friedrich-Karl Bruder, Thomas Fäcke, Marc-Stephan Weiser, Dennis Hönel
  • Patent number: 9708465
    Abstract: A thermoplastic composition is disclosed that includes a polyaryl ester polymer or copolymer and a phthalone compound according to the formula wherein Z1 represents the atoms necessary to complete a 9- to 13-membered single or fused aromatic ring structure, Z2 represents the atoms necessary to complete a pyridine or quinoline ring, each R1 and each R2 can independently be halogen, an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, an aryloxy group, an aromatic or aliphatic thioether group, an aromatic or aliphatic carboxylic acid ester group, or an aromatic or aliphatic amide group, a is an integer from 0 to 6, b is an integer from 0 to 4, n is 1 or 2, and X is present only if n=2 and is a single bond or a divalent organic radical bonded to the Z1 ring structure through an ether, ketone, or thio linkage.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: July 18, 2017
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Yogesh Omprakash Sharma, Vinodkumar Vasudevan, Meerakani Mohamed Ali Sait, Paul Dean Sybert, Olga Kuvshinnikova
  • Patent number: 9202600
    Abstract: The present invention relates to an universal method for the large scale production of high-purity carrier free or non carrier added radioisotopes by applying a number of “unit operations” which are derived from physics and material science and hitherto not used for isotope production. A required number of said unit operations is combined, selected and optimized individually for each radioisotope production scheme. The use of said unit operations allows a batch wise operation or a fully automated continuous production scheme. The radioisotopes produced by the inventive method are especially suitable for producing radioisotope-labelled bioconjugates as well as particles, in particular nanoparticles and microparticles.
    Type: Grant
    Filed: January 16, 2006
    Date of Patent: December 1, 2015
    Assignees: PAUL SCHERRER INSTITUT, CERN
    Inventors: Helge Leif Ravn, Gerd Juergen Beyer, Ulli Koester, Jacques Lettry, Richard Catherall, Alexander Hohn, Joerg Neuhausen, Luca Zanini, Andreas Tuerler
  • Publication number: 20150147685
    Abstract: A system and method may utilize holography to facilitate fabrication techniques such as 3D printing and lithography. The system may include a light source, a hologram of an original object or lithographic pattern recorded in a holographic medium, and a target such as a reservoir of photosensitive material or a photosensitive material attached to a substrate. Illuminating the hologram with the appropriate light source may cause a holographic image of the original object or lithographic pattern to form on the photosensitive material within the reservoir or on the substrate. Formation of the holographic image may result in the formation of a new object from the photosensitive material, or may facilitate removal or retention of photosensitive material as part of a lithographic process.
    Type: Application
    Filed: November 22, 2014
    Publication date: May 28, 2015
    Inventor: Gerald L. Heidt
  • Publication number: 20150147684
    Abstract: A system and method may utilize holography to facilitate fabrication techniques such as 3D printing and lithography. The system may include a light source, a hologram of an original object or lithographic pattern recorded in a holographic medium, and a target such as a reservoir of photosensitive material or a photosensitive material attached to a substrate. Illuminating the hologram with the appropriate light source may cause a holographic image of the original object or lithographic pattern to form on the photosensitive material within the reservoir or on the substrate. Formation of the holographic image may result in the formation of a new object from the photosensitive material, or may facilitate removal or retention of photosensitive material as part of a lithographic process.
    Type: Application
    Filed: November 22, 2014
    Publication date: May 28, 2015
    Inventor: Gerald L. Heidt
  • Publication number: 20150130896
    Abstract: This disclosure provides systems, methods and apparatus for enhancing the brightness and/or contrast ratio of display devices. In one aspect, the display devices can include a light redirector that is optically coupled with a diffuser. The light redirector includes a plurality of holographic features that can receive near-collimated light at non-normal angles with respect to a normal to a surface of the light redirector and redirects the received light along a direction that is substantially normal to the surface.
    Type: Application
    Filed: May 8, 2014
    Publication date: May 14, 2015
    Applicant: QUALCOMM MEMS Technologies, Inc.
    Inventors: Jian Ma, Kebin Li, John Hyunchul Hong, Tallis Young Chang
  • Publication number: 20150125784
    Abstract: The subject matter of the invention is a method for producing illuminated, holographic media comprising a photopolymer formulation having the adjustable mechanical modulus GUV. A further subject matter of the invention is an illuminated, holographic medium that can be obtained by means of the method according to the invention.
    Type: Application
    Filed: November 18, 2014
    Publication date: May 7, 2015
    Inventors: Marc-Stephan WEISER, Thomas ROELLE, Friedrich-Karl BRUDER, Thomas FÄCKE, Dennis HÖNEL
  • Patent number: 9025226
    Abstract: A holographic structure, system and method project a grey-scale image in a narrow IR spectral band that is related to a broadband thermal signature of an object. The projected grey-scale image, when integrated over the broadband, forms either a decoy that approximates the thermal signature of the object or a mask that obscures the thermal signature of the object. The projected image is a tuned phase recording of a desired far field projection. In different embodiments, the projected image is a “positive” or a “negative” image of the object's thermal signature, a difference image between the thermal signatures of a false object and the object or a camouflage image of random features having approximately the same spatial frequency as the object's thermal signature. The goal being to confuse or fool, even for a short period of time, the warfighting or surveillance system or human observer that uses a broadband IR sensor to acquire and view thermal images of the scene.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: May 5, 2015
    Assignee: Raytheon Company
    Inventors: Rigel Quinn Woida-O'Brien, Stephanie Barnes
  • Publication number: 20150118601
    Abstract: The present invention relates to novel photopolymer formulation comprising a polyol component, a polyisocyanate component, a writing monomer and a photoinitiator comprising a dye of formula (I). The present invention further relates to a holographic medium which contains a photopolymer formulation of the present invention or is obtainable by using same, to the use of a photopolymer formulation of the present invention for producing holographic media and also to a process for producing a holographic medium by using a photopolymer formulation of the present invention.
    Type: Application
    Filed: April 29, 2013
    Publication date: April 30, 2015
    Applicant: Bayer MaterialScience AG
    Inventors: Thomas Rölle, Horst Berneth, Friedrich-Karl Bruder, Thomas Fäcke, Marc-Stephan Weiser, Dennis Hönel
  • Patent number: 9012110
    Abstract: A method for the production of a holographic sensor which comprises a support medium supporting a reflection hologram wherein the support medium interacts with its physical or chemical environment to create an optical response which is a change in one or more optical properties of the hologram, the method comprising the steps of: a) introducing a colloidal dispersion of a recording material into the support medium; and b) ablating the colloidal particles of the recording material using a pulsed laser to form the holographic element in the support medium. The method of production can be used to introduce a reflection holographic grating into a hydrophobic support medium, in particular, polydimethylsiloxane (PDMS), which possesses an extraordinary ability to swell in the presence of both liquid and/or gaseous low molecular weight hydrocarbons and organic solvents and thus has many applications as a holographic sensor.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: April 21, 2015
    Assignee: Cambridge Enterprise Limited
    Inventors: Christopher Robin Lowe, Colin Alexander Bennett Davidson, Jeffrey Blyth
  • Patent number: 8999608
    Abstract: The invention relates to a photopolymer formulation comprising matrix polymers, writing monomers, and photoinitiators, to the use of the photopolymer formulation for producing optical elements, in particular for producing holographic elements and images, to a method for illuminating holographic media made of the photopolymer formulation, and to special fluorourethanes.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: April 7, 2015
    Assignee: Bayer MaterialScience AG
    Inventors: Thomas Rölle, Friedrich-Karl Bruder, Thomas Fäcke, Marc-Stephan Weiser, Dennis Honel
  • Patent number: 8993219
    Abstract: A method and an apparatus for forming a surface relief microstructure, especially an optically variable image on a paper substrate are provided, the method comprising the steps of: A) applying a curable composition to at least a portion of the frontside of the paper substrate; B) contacting at least a portion of the curable composition with surface relief microstructure, especially optically variable image forming means; C) curing the composition by using at least one UV lamp (1, 2, 3) which is arranged on the backside of the paper substrate; D) optionally depositing a layer of a transparent high refractive index material and/or a metallic layer on at least a portion of the cured composition, wherein the lamp (1, 2, 3) having emission peak(s) in the UV-A and near VIS range and the curable composition comprises at least a photoinitiator which absorbs in the UV-A region and preferably in the near VIS range.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: March 31, 2015
    Assignee: BASF SE
    Inventors: Michelle Richert, Thomas Bolle, Roland Fleury
  • Publication number: 20150086907
    Abstract: Provided is a photosensitive composition for volume hologram recording capable of forming a volume hologram recording medium that less shrinks upon curing in hologram recording (in hologram formation) and resists cracking. The photosensitive composition for volume hologram recording contains an alicyclic epoxy compound (A) represented by Formula (I); a thermal acid generator (B); a radically polymerizable compound (C); a radical polymerization initiator (D); and at least one epoxy compound (E) selected from the group consisting of compounds represented by Formula (1), epoxidized fatty acid esters, and epoxidized conjugated diene polymers.
    Type: Application
    Filed: April 2, 2013
    Publication date: March 26, 2015
    Applicant: DAICEL CORPORATION
    Inventors: Tomoya Mizuta, Hiroto Miyake
  • Patent number: 8982437
    Abstract: A hologram recording film manufacturing method includes the steps of obtaining a laminated structure by alternately laminating M (where M?2) photosensitive material precursor layers including a photosensitive material and at least one (M?1) resin layer on one another, obtaining M photosensitive material layers, where at least two interference fringes with a desired pitch and a desired slant angle are formed on each of the M photosensitive material layers, from the M photosensitive material precursor layers by irradiating the laminated structure with a reference laser light beam and an object laser light beam, and making the slant angles of the M photosensitive material layers different from each other while retaining the pitch value, which is defined on a face of the photosensitive material layer, by irradiating the laminated structure with an energy ray from the laminated structure's one face side, and heating the laminated structure.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: March 17, 2015
    Assignee: Sony Corporation
    Inventors: Mieko Kuwahara, Takuji Yoshida, Katsuyuki Akutsu
  • Publication number: 20150056538
    Abstract: Disclosed are a device for protecting crops from wildlife, comprising an optical base film on both sides of which fluorescent holograms of natural enemies with both eyes and optionally claws or talons are laser printed while a composition containing a phosphorescent material and a repellent is applied to both eyes, and optionally to the claws or talons, and a method for fabricating the same. Oils and extracts from herbs are used selectively as ingredients in the repellent depending on repelling targets, that is, mammals, rodents and birds. In addition, the use of phosphorescent material exerts a repellent effect on nocturnal animals. Thus, the device exhibits high durability and can be used for protection from wildlife damage in various targets.
    Type: Application
    Filed: August 28, 2013
    Publication date: February 26, 2015
    Applicant: BIO DEFENSE
    Inventor: Sung Sub HA
  • 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: 8927178
    Abstract: The present invention relates to a process for the preparation of a polymeric relief structure by a) coating a substrate with a first coating composition comprising one or more radiation-sensitive ingredients, d) locally treating the coated substrate with electromagnetic radiation having a periodic or random radiation-intensity pattern, forming a latent image, e) polymerizing and/or crosslinking the resulting coated substrate to a first coating. This process is improved by applying a second coating composition on top of the first coating composition, said second coating composition comprising either an organic compound (Co) of a monomeric nature and wherein Co is also polymerized during the process, or wherein said second coating comprises a dissolved polymer (Cp). As a result a polymeric relief structure is obtained, where a substrate is coated with a functional, stacked, bi-layer, in which each layer exhibits a specific, and from each other differing function.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: January 6, 2015
    Assignee: Stichting Dutch Polymer Institute
    Inventors: Cees C. Bastiaansen, Dirk Jan Broer, Carlos C. Sanchez
  • Patent number: 8921011
    Abstract: A method is provided for mastering optically variable devices (OVDs) used to authenticate optical discs. The method generally includes the steps of providing a laser beam recorder (LBR), introducing a substrate to the LBR, and exposing a portion of the substrate to the LBR. The mastering system thus includes the LBR, which has a laser that emits a beam, a processor or computer for programming or otherwise controlling the beam in order to expose the substrate and create the desired optical effect. Depending on the material used for the substrate, the exposure is then developed, if necessary, and processed to generate a master for the OVD. The OVD can then be replicated in order to provide authentic resultant products or articles, such as optical discs.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: December 30, 2014
    Assignee: 3dcd, LLC
    Inventors: Nigel C. Abraham, Holger Hofmann, Raymond L. Keating
  • Patent number: 8921012
    Abstract: The subject matter of the invention is a method for producing illuminated, holographic media comprising a photopolymer formulation having the adjustable mechanical modulus GUV. A further subject matter of the invention is an illuminated, holographic medium that can be obtained by means of the method according to the invention.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: December 30, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Marc-Stephan Weiser, Thomas Rölle, Friedrich-Karl Bruder, Thomas Fäcke, Dennis Hönel
  • Patent number: 8900775
    Abstract: A hologram recording material includes a polymerizable monomer (A) that is active in radical polymerization but is substantially inactive in cationic polymerization, a polymerizable monomer (B) that is active in cationic polymerization but is substantially inactive in radical polymerization, and an initiator system (C) that polymerizes at least one of the polymerizable monomer (A) and the polymerizable monomer (B) through irradiation with light. The polymerizable monomer (A) and the polymerizable monomer (B) each have, in its structure, a moiety selected from the group consisting of aromatic rings, halogen atoms other than a fluorine atom, and sulfur atoms not derived from a cyclic sulfide or a mercapto group. A hologram recording medium includes a recording layer composed of the hologram recording material.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: December 2, 2014
    Assignee: TDK Corporation
    Inventors: Naoki Hayashida, Shohei Fujii, Jiro Yoshinari
  • Publication number: 20140349218
    Abstract: A photosensitive material includes: a polymer matrix, a radical polymerization monomer and photo-radical polymerization initiator, wherein the polymer matrix has stable nitroxy radical at side chain thereof, wherein a molar ratio of the stable nitroxy radical to the radical polymerization monomer is set within a range of 0.03 to 0.25.
    Type: Application
    Filed: November 12, 2012
    Publication date: November 27, 2014
    Applicant: NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD
    Inventors: Takehiro Shimizu, Toshio Ando, Kazuyoshi Masaki
  • Patent number: 8889321
    Abstract: The invention relates to a method for producing a holographic film, wherein a photopolymer formulation comprising matrix polymers, writing monomers, photoinitiator system, and optionally auxiliary materials and additives is provided, the photopolymer formulation is applied as a film to the surface of a substrate, and the film is dried, wherein a photopolymer formulation having a plateau module G0 of =0.03 MPa is used. The invention further relates to a holographic medium that can be obtained by means of the method according to the invention.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: November 18, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Friedrich-Karl Bruder, Dennis Hönel, Marc-Stephan Weiser, Thomas Rölle, Thomas Fäcke
  • Patent number: 8889322
    Abstract: The invention relates to a photopolymer formulation comprising matrix polymers, writing monomers, and photo initiators, comprising a combination of at least two different writing monomers. The invention further relates to the use of the photopolymer formulation for producing optical elements, in particular for producing holographic elements and images, to a method for producing the photopolymer formulation and to a method for illuminating holographic media made of the photopolymer formulation.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: November 18, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Marc-Stephan Weiser, Friedrich-Karl Bruder, Thomas Rölle, Thomas Fäcke, Dennis Hönel, Jörg Hofmann
  • Publication number: 20140329172
    Abstract: A method for producing a material with anisotropic optical properties, the method comprising: fabricating a patterned mask with alternating opaque and transparent regions; assembling a stack containing one or more layers of photosensitive material; and exposing the photosensitive material through the mask to photographically reproduce the pattern or its inverse. This photographic copying process yields a reproduction which is inherently well-registered to the mask's pattern, and the resulting registered patterns allow transmission in some directions whilst blocking transmission in other directions.
    Type: Application
    Filed: June 12, 2014
    Publication date: November 6, 2014
    Inventors: Stephen John Hart, Daniel Louis Burman, Dinesh Devanna Padiyar, Joyce Ann Padiyar
  • Patent number: 8877408
    Abstract: The invention relates to a photopolymer formulation comprising matrix polymers, writing monomers and photo initiators, to a method for producing said photopolymer formulation, a photopolymer formulation obtained according to said method, a sheeting, a film, a layer, a layer structure or a moulded body made from said photopolymer formulation and to the use of said photopolymer formulation for producing optical elements, in particular for producing holographic elements and images.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: November 4, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Thomas Rölle, Friedrich-Karl Bruder, Thomas Fäcke, Marc-Stephan Weiser, Dennis Hönel
  • Publication number: 20140322081
    Abstract: Techniques, apparatus, material and systems are described for implementing a three-dimensional composite mushroom-like metallodielectric nanostructure. In one aspect, a surface plasmon based sensing device includes a substrate and a layer of an anti-reflective coating over the substrate. The surface Plasmon based sensing device includes a dielectric material on the anti-reflective coating shaped to form a 2-dimensional array of nanoholes spaced from one another. Also, the surface Plasmon based sensing device includes a layer of a metallic film formed on the 2-dimensional array of nanoholes to include openings over the nanoholes, respectively, wherein the sensing device is structured to support both propagating surface plasmon polariton (SPP) waves and localized surface plasmon resonant (LSPR) modes.
    Type: Application
    Filed: August 19, 2013
    Publication date: October 30, 2014
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Lin Pang, Haiping Matthew Chen, Yeshaiahu Fainman
  • Patent number: 8865374
    Abstract: A package that has at least one hologram on its exterior surface is formed from a paper, paperboard or thermoplastic substrate material that has an inner surface and an outer surface. The outer surface has a radiation curable particulate metal containing coating. This coating is cured and zero to one or more ink containing coatings are applied to the radiation curable particulate metal containing coating in areas that are not to have a hologram. Each of these ink containing coatings are cured, and a substantially transparent radiation curable coating is applied to the areas deficient in the zero to one or more ink coatings. This substantially transparent radiation curable coating is contacted with a substantially transparent holographic shim in an area not having thereon ink containing coatings while curing radiation is applied to the substantially transparent radiation curable coating and the substantially transparent shim.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: October 21, 2014
    Assignee: Colgate-Palmolive Company
    Inventor: John A. Sarnataro
  • Publication number: 20140302425
    Abstract: The invention relates to a method for producing holographic media, wherein a photopolymer formulation comprising matrix polymers, writing monomers, a photoinitiator system, and optionally auxiliary materials and additives as components is provided, the photopolymer formulation is applied as a coating on the surface of a carrier film and the photopolymer formulation is dried on the carrier film at a temperature XX<T>YY DEG C., wherein only those compounds having TGA 95 values >100 DEG C. and at least 30 DEG C. above the temperature T are selected as components for the photopolymer formulation. The invention further relates to a holographic medium that can be obtained by means of the method according to the invention.
    Type: Application
    Filed: May 22, 2014
    Publication date: October 9, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Marc-Stephan Weiser, Thomas Rölle, Dennis Hönel, Friedrich-Karl Bruder, Thomas Fäcke
  • Publication number: 20140302426
    Abstract: The invention relates to a method for producing holographic films, in which a photopolymer formulation is provided which comprises as constituents matrix polymers, writing monomers, a photoinitiator system, optionally a non-photopolymerizable component and optionally catalysts, radical stabilizers, solvents, additives and other auxiliaries and/or additives. The photopolymer formulation is applied in a planar manner and in the form of a film on a support film and the photopolymer formulation is dried on the support film at a temperature 60<T<120 DEG C., wherein only compounds are selected as components for the photopolymer formulation, the TGA 95 values of which are >100 DEG C. and are above the temperature T by at least 30 DEG C., and a photopolymer formulation having a plateau module of =0.030 MPa is used.
    Type: Application
    Filed: May 22, 2014
    Publication date: October 9, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Dennis Hönel, Marc-Stephan Weiser, Friedrich-Karl Bruder, Thomas Rölle, Thomas Fäcke
  • Patent number: 8852828
    Abstract: This invention provides a volume hologram photosensitive composition, which can realize a hologram having an excellent brightness and, at the same time, having excellent heat resistance and mechanical strength, and a photosensitive medium for volume hologram recording using the volume hologram photosensitive composition. The volume hologram photosensitive composition comprises at least a photopolymerizable monomer, a photopolymerization initiator, a sensitizing dye for sensitizing the initiator, and a binder resin. The binder resin comprises a heat curing resin, and optionally a thermoplastic resin, and the thermoplastic resin is contained in an amount of 0 to 25% by weight based on the total solid content of the photosensitive composition.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: October 7, 2014
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Minoru Azakami, Yoshihito Maeno, Hiroyuki Ohtaki
  • Patent number: 8852829
    Abstract: The present invention relates to a polyurethane composition comprising A) a polyisocyanate component comprising an exclusively diol-based NCO-terminated polyurethane prepolymer, wherein the NCO groups are bonded in a primary manner, B) an isocyanate-reactive polymer, C) a compound having groups which react by polymerizing with an ethylenically unsaturated compound under the action of actinic radiation (radiation-curing groups) wherein the compound is free of NCO groups, D) a free-radical stabilizer, E) a photoinitiator, F) optionally a catalyst, G) optionally assistants and additives.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: October 7, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Marc-Stephan Weiser, Thomas Rölle, Friedrich-Karl Bruder, Thomas Fäcke, Dennis Hönel, Sebastian Dörr, Nicolas Stöckel
  • Publication number: 20140295329
    Abstract: This invention relates to a holographic medium comprising a protective layer and a photopolymer film which is bonded to the protective layer and contains polyurethane matrix polymers, acrylate writing monomers and photoinitiators, wherein the protective layer is impermeable to the constituents of the photopolymer film, is optically clear and is transparent to electromagnetic radiation having a wavelength in the range of from 350 to 800 nm. The invention further provides the use of a holographic medium according to the invention in the production of holograms, and a process for the production of a holographic medium according to the invention.
    Type: Application
    Filed: November 11, 2012
    Publication date: October 2, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Marc-Stephan Weiser, Daniel Hentschel, Joachim Petzoldt, Pantea Nazaran, Sebastian Dörr, Dirk Dijkstra, Ute Flemm, Dennis Hönel, Friedrich-Karl Bruder, Thomas Fäcke, Thomas Rölle
  • Publication number: 20140295328
    Abstract: The present invention relates to photopolymer formulations comprising: matrix polymers (A), obtainable by reacting at least one polyisocyanate component (a) and one isocyanate-reactive component (b); a writing monomer (B); a photoinitiator (C); a catalyst (D); and a chain transfer reagent (E). A holographic medium that contains a photopolymer formulation according to the invention or can be obtained by using it, the use of a photopolymer formulation according to the invention for manufacturing holographic media, and a method for producing a holographic medium by using a photopolymer formulation according to the invention are also subject matter of the invention.
    Type: Application
    Filed: October 11, 2012
    Publication date: October 2, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Marc-Stephan Weiser, Friedrich-Karl Bruder, Thomas Rölle, Thomas Fäcke, Dennis Hönel, Horst Berneth
  • Patent number: 8841046
    Abstract: A system for generating periodic or quasi-periodic patterns on a sample by means of an interference lithography technique includes a photon source, a mask and a sample holder. The mask has a grating for generating a predetermined pattern, wherein the mask is positioned at a first distance from the photon source. The sample holder is disposed at a second distance from the mask on a side facing away from the photon source. The second distance is selected to be where an intensity distribution is substantially stationary and distance-invariant, or the second distance is varied to obtain a desired average intensity distribution on the sample surface.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: September 23, 2014
    Assignee: Eulitha AG
    Inventor: Harun H. Solak
  • Publication number: 20140255824
    Abstract: The present invention relates to photopolymer formulations comprising: matrix polymers (A), obtainable by reacting at least one polyisocyanate component (a) and one isocyanate-reactive component (b); a writing monomer (B); a photoinitiator (C) a catalyst (D); and a sulphur-containing chain transfer reagent (E). A holographic medium that contains a photopolymer formulation according to the invention or can be obtained by using it, the use of a photopolymer formulation according to the invention for manufacturing holographic media, and a method for producing a holographic medium by using a photopolymer formulation according to the invention are also subject matter of the invention.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 11, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Marc-Stephan Weiser, Friedrich-Karl Bruder, Thoms Rölle, Thomas Fäcke, Dennis Hönel, Horst Berneth
  • Patent number: 8828624
    Abstract: A system for recording multiple volume Bragg gratings (VBGs) in a photo thermo-refractive material is configured to implement a method which provides for irradiating the material by a coherent light through a phase mask. The system has a plurality of actuators operative to displace the light source, phase mask and material relative to one another so as to mass produce multiple units of the material each having one or more uniformly configured VBGs.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: September 9, 2014
    Assignee: IPG Photonics Corporation
    Inventors: Valentin P Gapontsev, Alex Ovtchinnikov, Dmitry Starodubov, Alexey Komissarov
  • Patent number: 8815472
    Abstract: This invention provides, for example, a highly stable and reliable volume hologram optical recording medium which can suppress an intensity variation, for example, in diffraction efficiency after signal recording and can stably develop a high S/N ratio. The volume hologram optical recording medium includes a recording layer containing at least one compound selected from compounds (A1) having a terpenoid structure, compounds (A2) represented by a formula (I), and cyclic or noncyclic compounds (A3) having at least two double bonds two of these double bonds are located at 1,4-position relatively, wherein R1 and R2 each independently represent an organic group having 1 to 20 carbon atoms, and R1 and R2 may combine to form a cyclic structure.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: August 26, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yasuaki Miki, Naomi Fujimori
  • Patent number: 8808944
    Abstract: A method for storing holographic data, said method comprising: step (A) providing an optically transparent substrate comprising a polymer composition and a light absorbing chromophore, said polymer composition comprising a continuous phase and a dispersed phase, said dispersed phase being less than about 200 nm in size; and step (B) irradiating a volume element of the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to cause a phase change in at least a portion of the dispersed phase within the volume element of the substrate to produce within the irradiated volume element refractive index variations corresponding to the holographic interference pattern, thereby producing an optically readable datum corresponding to the volume element.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: August 19, 2014
    Assignee: General Electric Company
    Inventors: Brian Lee Lawrence, Marc Dubois, Eugene Pauling Boden, William David Richards, Patrick Joseph McCloskey, Azar Alizadeh, Xiaolei Shi
  • Patent number: 8808945
    Abstract: A volume hologram layer (2) is formed on a substrate (1), and a cholesteric liquid crystal layer (3) is then formed on the hologram layer (2). After the substrate (1) is peeled off the volume hologram layer (2), an adhesive layer (4) is formed on the surface of the volume hologram layer (2) with the substrate (1) peeled off, and another substrate (5) is then formed on the adhesive layer (4). Finally, a label form of cholesteric liquid crystal medium having a volume hologram is shaped out of the resulting multilayer structure; it is thus possible to fabricate cholesteric liquid crystal media having a volume hologram with efficiency yet without recourse to any complicated steps such as an alignment step.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: August 19, 2014
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Masachika Watanabe, Masanori Umeya, Koji Eto, Tsuyoshi Yamauchi
  • Patent number: 8808946
    Abstract: The invention relates to novel specially substituted urethane acrylates based on tris(p-isocyanatophenyl)thiophosphate having a high refractive index and reduced double bond density, and to a method for the production and use thereof.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: August 19, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Thomas Rölle, Friedrich-Karl Bruder, Thomas Fäcke, Marc-Stephan Weiser, Dennis Hönel
  • Publication number: 20140212792
    Abstract: Articles for recording a holographic image are described. The articles include a holographic recording medium having a plurality of surfaces, having a transparent polymeric binder and a photochemically active dye, the holographic recording medium having a holographic image recorded therein formed by exposed areas of the photochemically active dye and unexposed areas of the photochemically active dye; and a first light-blocking layer or material over a first surface of the holographic recording medium from which surface the holographic image is viewed, the light blocking layer or material absorbing light in the wavelength range to which the photochemically active dye is sensitive and allowing transmission of light in a different wavelength range for viewing the holographic image.
    Type: Application
    Filed: April 3, 2014
    Publication date: July 31, 2014
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V.
    Inventors: Andrew A. Burns, Sumeet Jain, Pradeep Jeevaji Nadkarni, Shantaram Narayan Naik, Arunkumar Natarajan, Kiran Arunkumar Puthamane, Michael T. Takemori, Vinodkumar Vasudevan
  • Patent number: 8778568
    Abstract: An optical data storage medium is provided. The optical data storage medium includes a polymer matrix; a reactant capable of undergoing a change upon triplet excitation, thereby causing a refractive index change; and a non-linear sensitizer capable of absorbing actinic radiation to cause upper triplet energy transfer to said reactant. The refractive index change capacity of the medium is at least about 0.005. The non-linear sensitizer comprises a triarylmethane dye.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: July 15, 2014
    Assignee: General Electric Company
    Inventors: Arunkumar Natarajan, Patrick Joseph McCloskey, Eugene Pauling Boden, Kwok Pong Chan, Matthew Jeremiah Misner, Evgenia Mikhailovna Kim
  • Publication number: 20140193748
    Abstract: The present invention provides a visible light photoinitiating system for preparing a holographic photopolymer material with high-diffraction efficiency. The photoinitiating system comprises a photosensitizer and a co-initiator, and its mechanism is that the photosensitizer transforms from ground state to excited state after absorbing photons, and then interacts with the co-initiator through transfer of electrons and protons, which produces an alkyl (or aryl) free radical R and a ketyl radical K; wherein the free radical R initiates the addition polymerization of monomers that are capable of free radical polymerization, whereas the radical K inhibits the chain propagation of the macromolecular free radicals to a certain degree due to the steric hindrance effect, and thus delays the gelation time of the photopolymerization, which helps to increase the phase separation between the polymer and the functional components.
    Type: Application
    Filed: May 25, 2012
    Publication date: July 10, 2014
    Inventors: Xiaolin Xie, Haiyan Peng, Xingping Zhou, Chengfu Zheng, Hongwei Ge
  • Patent number: 8771904
    Abstract: The invention relates to a method for producing holographic media, wherein a photopolymer formulation comprising matrix polymers, writing monomers, a photoinitiator system, and optionally auxiliary materials and additives as components is provided, the photopolymer formulation is applied as a coating on the surface of a carrier film and the photopolymer formulation is dried on the carrier film at a temperature XX<T>YY DEG C, wherein only those compounds having TGA 95 values >100 DEG C. and at least 30 DEG C. above the temperature T are selected as components for the photopolymer formulation. The invention further relates to a holographic medium that can be obtained by means of the method according to the invention.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: July 8, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Marc-Stephan Weiser, Thomas Rölle, Dennis Hönel, Friedrich-Karl Bruder, Thomas Fäcke
  • Patent number: 8771903
    Abstract: The invention relates to a method for producing holographic films, in which a photopolymer formulation is provided which comprises as constituents matrix polymers, writing monomers, a photoinitiatior system, optionally a non-photopolymerizable component and optionally catalysts, radical stabilizers, solvents, additives and other auxiliaries and/or additives. The photopolymer formulation is applied in a planar manner and in the form of a film on a support film and the photopolymer formulation is dried on the support film at a temperature 60<T<120 DEG C, wherein only compounds are selected as components for the photopolymer formulation, the TGA 95 values of which are >100 DEG C and are above the temperature T by at least 30 DEG C, and a photopolymer formulation having a plateau module of =0.030 MPa is used.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: July 8, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Dennis Hönel, Marc-Stephan Weiser, Friedrich-Karl Bruder, Thomas Rölle, Thomas Fäcke
  • Patent number: 8758960
    Abstract: A novel polymerizable high-refractive index compound which is useful as an optical material, and a holographic recording medium using the same, which has high diffraction efficiency, high light transmittance and small rate of shrinkage, are provided. A composition for forming a holographic recording layer containing a reactive compound represented by the following formula 1, a holograph recording material, and a holographic recording medium provided with a recording layer containing the same, are disclosed.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: June 24, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yasuaki Miki, Akiko Yabe, Jun Enda
  • Publication number: 20140154614
    Abstract: A method for preparing a colorful three-dimensional hologram based on holographic polymer dispersed liquid crystal gratings comprises: first, in a 441.
    Type: Application
    Filed: May 24, 2012
    Publication date: June 5, 2014
    Inventors: Xiaolin Xie, Haiyan Peng, Xingping Zhou, Chengfu Zheng, Hongwei Ge
  • Publication number: 20140141359
    Abstract: Fiber optic devices including volume Bragg grating (VBG) elements are disclosed. A fiber optic device may include one or more optical inputs, one or more VBG elements, and one or more optical receivers. Methods for manufacturing VBG elements and for controlling filter response are also disclosed. A VBG chip, and fiber optic devices using such a chip, are also provided. A VBG chip includes a monolithic glass structure onto which a plurality of VBGs have been recorded.
    Type: Application
    Filed: January 24, 2014
    Publication date: May 22, 2014
    Applicant: PD-LD, Inc.
    Inventors: Boris L. Volodin, Vladimir Sinisa Ban
  • Patent number: 8728685
    Abstract: Articles for recording a holographic image are described. The articles include a holographic recording medium having a plurality of surfaces, having a transparent polymeric binder and a photochemically active dye, the holographic recording medium having a holographic image recorded therein formed by exposed areas of the photochemically active dye and unexposed areas of the photochemically active dye; and a first light-blocking layer or material over a first surface of the holographic recording medium from which surface the holographic image is viewed, the light blocking layer or material absorbing light in the wavelength range to which the photochemically active dye is sensitive and allowing transmission of light in a different wavelength range for viewing the holographic image.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: May 20, 2014
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Andrew A. Burns, Sumeet Jain, Pradeep Jeevaji Nadkarni, Shantaram Narayan Naik, Arunkumar Natarajan, Kiran ArunKumar Puthamane, Michael T. Takemori, Vinodkumar Vasudevan
  • Publication number: 20140133000
    Abstract: Provided are a photorefractive polymer composite, and a photorefractive devices and hologram display device including the same. The photorefractive polymer composite includes a photoconductive polymer matrix, a nonlinear optical chromophore, a plasticizer, and a graphite-based photocharge generator.
    Type: Application
    Filed: August 20, 2013
    Publication date: May 15, 2014
    Inventors: Chil-sung CHOI, Kyoung-seok PYUN