Inorganic Luminescent Compositions With Organic Nonluminescent Material Patents (Class 252/301.36)
-
Publication number: 20140291528Abstract: A storage phosphor panel can include an extruded inorganic storage phosphor layer including a thermoplastic polyolefin and an inorganic storage phosphor material, where the extruded inorganic storage phosphor panel has a DQE comparable to that of a traditional extruded inorganic solvent coated inorganic storage phosphor screen. Also disclosed is an inorganic storage phosphor detection system including an extruded inorganic storage phosphor panel that can include an extruded inorganic storage phosphor layer including a thermoplastic olefin and an inorganic storage phosphor material; and photodetector(s) coupled to the extruded inorganic storage phosphor panel to detect photons generated from the extruded inorganic storage phosphor panel.Type: ApplicationFiled: May 29, 2014Publication date: October 2, 2014Inventors: Seshadri Jagannathan, Chang-Ying Joseph Yang, Kevin L. Bishop, Mark S. Purdum
-
Patent number: 8846184Abstract: A chromic luminescent object comprising one or more chromic luminescent compositions incorporated into or onto one or more portions of the object, in which the one or more chromic luminescent compositions are selected such that, when subsequently exposed to incident electromagnetic radiation, at least brightness of the one or more portions of the object is substantially modulated through absorption and emission as a function of incident electromagnetic radiation is disclosed. Also disclosed are methods for fabricating the chromic luminescent object.Type: GrantFiled: March 14, 2013Date of Patent: September 30, 2014Assignee: Performance IndicatorInventors: Satish Agrawal, Louis Cincotta, Edward D. Kingsley, Nancy Lane
-
Publication number: 20140264079Abstract: A component of a motor vehicle comprising a photoluminescent interior member formed of a plastic composition, wherein the plastic composition comprises at least one polymer and a plurality of additives comprising at least one photoluminescent material and at least a first ultraviolet protector, wherein the at least one photoluminescent material absorbs electromagnetic radiation in a first ultraviolet range of an electromagnetic spectrum, and thereafter emits electromagnetic radiation in a visible radiation range of the electromagnetic spectrum, and wherein the first ultraviolet protector is an ultraviolet absorber, wherein the ultraviolet absorber absorbs electromagnetic radiation in a second ultraviolet range of the electromagnetic spectrum and does not absorb electromagnetic radiation in the first ultraviolet range of the electromagnetic spectrum.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Inventor: International Automotive Components Group North America, Inc.
-
Publication number: 20140252274Abstract: Quantum dot delivery methods are described. In a first example, a method of delivering or storing a plurality of nano-particles involves providing a plurality of nano-particles. The method also involves forming a dispersion of the plurality of nano-particles in a medium for delivery or storage, wherein the medium is free of organic solvent. In a second example, a method of delivering or storing a plurality of nano-particles involves providing a plurality of nano-particles in an organic solvent. The method also involves drying the plurality of nano-particles for delivery or storage, the drying removing entirely all of the organic solvent.Type: ApplicationFiled: March 4, 2014Publication date: September 11, 2014Inventors: Georgeta Masson, Kari N. Haley, Brian Theobald, Benjamin Daniel Mangum, Juanita N. Kurtin
-
Patent number: 8822955Abstract: The present application relates to polymer-conjugated quantum dots. The quantum dots can include, for example, an inorganic core conjugated to a polymer. The quantum dots may, in some embodiments, be water-soluble and exhibit superior photoluminescence. Also disclosed are methods of making and using the quantum dots.Type: GrantFiled: March 21, 2011Date of Patent: September 2, 2014Assignee: East China University of Science and TechnologyInventors: Xinhua Zhong, Yan Li, Hua Zhang, Lu Liu
-
Publication number: 20140239335Abstract: Formation of an interlayer is realized for a light-emitting device, the interlayer having properties of anticorrosion and adhesion to a silicone layer, thus preventing incidence of cracking during a baking process. The light-emitting device comprises a light-emitting element covered with the silicone layer, and the interlayer is provided between the light-emitting element and the silicone layer. The interlayer is formed of a mixture of a tri-functional polysiloxane and a tetra-functional polysiloxane.Type: ApplicationFiled: September 24, 2012Publication date: August 28, 2014Inventor: Kenji Goto
-
Patent number: 8801967Abstract: A granulate made of a cured mixture comprising a transparent true light matrix in which at least one photoluminescent luminous pigment and a transparent filler material are present, wherein the filler material comprises a grain size of less than 30? and/or a grain size between 70? and 1.2 mm. The granulate may be produced by producing a hardenable binder mixture, introducing and mixing a photoluminescent luminous pigment into the hardenable binder mixture, dispersing a filler in the mixture, and milling the hardened mixture to form the granulate.Type: GrantFiled: August 4, 2010Date of Patent: August 12, 2014Assignee: Nightec GmbH & Co. KGInventors: Henning Mack, Klaus Hock
-
Patent number: 8801968Abstract: The invention relates to surface-modified phosphor particles based on luminescent particles which comprise at least one luminescent compound, where (Ca,Sr,Ba)2SiO4 and other silicates having one or more activator ions, such as Eu, Ce and Mn, are excluded as luminescent compounds, and where at least one inorganic layer comprising oxides/hydroxides of Si, Al, Zr, Zn, Ti and/or mixtures thereof and an organic coating of organosilanes or polyorganosiloxanes (silicones) and/or mixtures thereof are applied to the luminescent particles, and to a production process.Type: GrantFiled: October 29, 2008Date of Patent: August 12, 2014Assignee: Merck Patent GmbHInventors: Ralf Petry, Reinhold Rueger, Tim Vosgroene, Holger Winkler
-
Publication number: 20140217445Abstract: The invention relates to a method for producing a polymer product having integrated luminescent material particles, the polymer product being produced from at least one monomer in liquid phase and at least one kind of powder of luminescent material particles. The method is characterized by adding the luminescent material to the liquid monomer before polymerisation. The invention further relates to a plastic component for light conversion made of the polymer produced according to said method; a Light-emitting device comprising said plastic component; and the use of a polymer produced according to said method.Type: ApplicationFiled: July 12, 2012Publication date: August 7, 2014Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Johannes Martinus Jansen, René Theodorus Wegh
-
Publication number: 20140222117Abstract: A method and a system for producing a change in a medium disposed in an artificial container. The method places in a vicinity of the medium at least one of a plasmonics agent and an energy modulation agent. The method applies an initiation energy through the artificial container to the medium. The initiation energy interacts with the plasmonics agent or the energy modulation agent to directly or indirectly produce the change in the medium. The system includes an initiation energy source configured to apply an initiation energy to the medium to activate the plasmonics agent or the energy modulation agent.Type: ApplicationFiled: April 4, 2014Publication date: August 7, 2014Applicants: DUKE UNIVERSITY, IMMUNOLIGHT, LLC.Inventors: Frederic Avery Bourke, JR., Tuan Vo-Dinh
-
Publication number: 20140209951Abstract: Oxetane-containing compounds, and compositions of oxetane-containing compounds together with carboxylic acids, latent carboxylic acids, and/or compounds having carboxylic acid and latent carboxylic acid functionality are provided. The oxetane-containing compounds and compositions thereof are useful as adhesives, sealants and encapsulants, particularly for components, and in the assembly, of LED devices.Type: ApplicationFiled: March 28, 2014Publication date: July 31, 2014Applicants: HENKEL IP & HOLDING GMBH, HENKEL AG & CO. KGAAInventors: Shengqian Kong, Puwei Liu, Stijn Gillissen, Donghang Xie, Lirong Bao, Daniel J. Duffy, Allison Yue Xiao, Emilie Barriau
-
Publication number: 20140210338Abstract: A phosphor-containing sheet having a storage modulus of 0.1 MPa or more at 25° C. and a storage modulus of less than 0.1 MPa at 100° C., wherein a resin main component of the phosphor-containing sheet is a crosslinked product formed by subjecting a crosslinkable silicone composition containing a specific composition to a hydrosilylation reaction. This phosphor-containing sheet provides a phosphor sheet having good shapability and high adhesive power as a phosphor sheet bonded to an LED chip as a wavelength conversion layer.Type: ApplicationFiled: May 14, 2012Publication date: July 31, 2014Applicant: Toray Industries, Inc.Inventors: Nobuo Matsumura, Takejiro Inoue, Hironobu Sadakuni, Yutake Ishida, Kazunari Kawamoto, Masahiro Yoshioka, Tetsuya Goto
-
Patent number: 8789761Abstract: This invention relates to a transparent or translucent transaction card having a base comprising a core of substantially transparent or translucent material with a plurality of coats, including optically recognizable ink comprising one or more infrared blocking dyes and other nanoparticles, such as rare earth nanophosphors and other metal nanoparticles, and/or optically recognizable film comprising nanoparticles, such as rare earth nanophosphors, and other metal oxide and/or non-oxide complexes, and methods for their preparation.Type: GrantFiled: October 5, 2012Date of Patent: July 29, 2014Assignee: Intelligent Material Solutions, Inc.Inventors: Joshua E. Collins, Howard Y. Bell
-
Publication number: 20140203213Abstract: Methods for the synthesis of metal quantum clusters within the framework of a porous gel matrix are described. For example, Ag25(glutathione)18 quantum clusters are synthesized in a cross-linked polyacrylamide gel matrix. The methods can be performed on large-scale and yields monodispersed metal quantum clusters.Type: ApplicationFiled: December 22, 2011Publication date: July 24, 2014Applicant: INDIAN INSTITUTE OF TECHNOLOGY MADRASInventors: Pradeep Thalappil, Udayabhaskararao Thumu
-
Publication number: 20140203316Abstract: LED dies, emitting blue light, are provided on a first support substrate to form a light emitting layer. A mixture of a transparent binder, yellow phosphor powder, magenta-colored glass beads, and cyan-colored glass beads is printed over the light emitting surface. The mixture forms a wavelength conversion layer when cured. The beads are sized so that the tops of the beads protrude completely through the conversion layer. When the LED dies are on, the combination of the yellow phosphor light and the blue LED light creates white light. When the LEDs are off, white ambient light, such as sunlight, causes the conversion layer to appear to be a mixture of yellow light, magenta light, and cyan light. The percentage of the magenta and cyan beads in the mixture is selected to create a desired off-state color, such as a neutral color, of the conversion layer for aesthetic purposes.Type: ApplicationFiled: December 18, 2013Publication date: July 24, 2014Applicant: Nthdegree Technologies Worldwide Inc.Inventor: William J. Ray
-
Patent number: 8785222Abstract: The present invention provides phosphor inks configured to achieve high efficiency in converting LED light from one wavelength to another. The phosphor ink composition for deposition on an LED device comprises a phosphor component having nano-phosphor particles on the order of 100 to 1000 nanometers, and a curable resin component. In particular, the nano-phosphor particles are uniformly dispersed throughout the ink composition. The nano-phosphor particles may be formed by a size reduction process carried out on larger phosphor particles on the order of 1 to 50 micrometers. Preferably, the size reduction process is based on solvent wet milling. Methods for preparing the phosphor inks based on forming the nano-phosphor particles from larger particles by solvent wet milling are also provided.Type: GrantFiled: July 30, 2012Date of Patent: July 22, 2014Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Dennis McKean, Pan Man Wong, Wenbo Ma
-
Publication number: 20140191161Abstract: A hydrosilylation curable silicone composition that forms a cured product with a high refractive index, high transparency, excellent heat resistance, and excellent flexibility, the hydrosilylation curable silicone composition comprising, as a main component, an organopolysiloxane represented by the following average unit formula: (R13SiO1/2)a(R12SiO2/2)b(R2SiO3/2)c(SiO4/2)d wherein, R1 are alkyl groups, alkenyl groups, phenyl groups, or hydrogen atoms; R2 is a group recited for R1, a condensed polycyclic aromatic group, or a group containing a condensed polycyclic aromatic group, provided that at least one of R1 or R2 in a molecule is an alkenyl group or hydrogen atom, and at least one R2 in a molecule is a condensed polycyclic aromatic group or a group containing a condensed polycyclic aromatic group; and a, b, c, and d are numbers satisfying: 0.01?a?0.8, 0?b?0.5, 0.2?c?0.9, 0?d<0.2, and a+b+c+d=1.Type: ApplicationFiled: July 4, 2012Publication date: July 10, 2014Inventors: Masaaki Amako, Tadashi Okawa, Tomohiro Iimura, Kazuhiro Nishijima, Maki Itoh, Yoshitsugu Morita
-
Patent number: 8765014Abstract: Disclosed herein is a quantum dot ink composition for inkjet printing. The quantum dot ink composition comprises a highly viscous polymeric additive. Quantum dots can be ejected by inkjet printing and the concentration of the quantum dots in the quantum dot ink composition can be freely controlled. In addition, the loading amount of the quantum dots can be reduced. Based on these advantages, the quantum dot ink composition can be used as a material for light-emitting layers of a variety of electronic devices. Also disclosed herein is an electronic device fabricated using the quantum dot ink composition.Type: GrantFiled: April 25, 2008Date of Patent: July 1, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Kyung Sang Cho, Tae Woon Cha
-
Patent number: 8759112Abstract: The present invention concerns a system and method for the luminescence detection of an analyte in a liquid sample. The system comprises a support on which an analyte-specific substance and a reference substance are located. The analyte-specific substance is able to emit a first luminescence signal on contact with the analyte and the reference substance is able to emit a second luminescence signal which is substantially quenched by contact with the liquid sample.Type: GrantFiled: October 25, 2005Date of Patent: June 24, 2014Assignee: Roche Diagnostics Operations, Inc.Inventor: Carina Horn
-
Patent number: 8758646Abstract: Compositions, methods of making compositions, materials including compositions, crayons including compositions, paint including compositions, ink including compositions, waxes including compositions, polymers including compositions, vesicles including the compositions, methods of making each, and the like are disclosed.Type: GrantFiled: February 9, 2009Date of Patent: June 24, 2014Assignees: Georgia Southern University Research and Service Foundation, Inc., Lock Haven University of PennsylvaniaInventors: Weiyi Jia, Xiaojun Wang, George D. Jia, Linda Lewis, Laurel C. Yen
-
Publication number: 20140158937Abstract: A process of synthesizing nanocrystals, the process including contacting a first precursor, a ligand compound, and a second precursor in a solvent having a boiling point of less than or equal to about 150° C. and a polarity index of less than or equal to 5, and performing a thermal decomposition reaction between the first precursor and the second precursor at a higher pressure than atmospheric pressure and at a higher temperature than a boiling point of the solvent, wherein at least one of the first precursor and the second precursor is a metal-containing precursor.Type: ApplicationFiled: May 29, 2013Publication date: June 12, 2014Inventors: Eun Joo JANG, Hyo Sook JANG, Won Joo LEE
-
Publication number: 20140158938Abstract: Disclosed herein is a quantum dot phosphor for light emitting diodes, which includes quantum dots and a solid substrate on which the quantum dots are supported. Also, a method of preparing the quantum dot phosphor is provided. Since the quantum dot phosphor of the current invention is composed of the quantum dots supported on the solid substrate, the quantum dots do not aggregate when dispensing a paste obtained by mixing the quantum dots with a paste resin for use in packaging of a light emitting diode. Thereby, a light emitting diode able to maintain excellent light emitting efficiency can be manufactured.Type: ApplicationFiled: February 14, 2014Publication date: June 12, 2014Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Eun Joo JANG, Mi Yang KIM, Hyung Kun KIM, Shin Ae JUN, Yong Wan JIN, Seong Jae CHOI
-
Patent number: 8749130Abstract: The present invention provides matrixes doped with semiconductor nanocrystals. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. The present invention also provides processes for producing matrixes comprising semiconductor nanocrystals.Type: GrantFiled: February 28, 2008Date of Patent: June 10, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: J. Wallace Parce, Jian Chen, Robert S. Dubrow, William P. Freeman, Erik C. Scher, Jeffery A. Whiteford
-
Patent number: 8747517Abstract: A method for isolating a nanoparticle is disclosed. A medium containing a nanoparticle is provided. The medium is acidified with a weak acid. An alcoholic solvent is added to induce the nanoparticle to precipitate from the medium. The precipitated nanoparticles are separated from the medium.Type: GrantFiled: June 30, 2009Date of Patent: June 10, 2014Assignee: Life Technologies CorporationInventors: Joseph Bartel, Kari Haley, Berhane Measho
-
Publication number: 20140151600Abstract: Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes are optionally formed from the ligands. The matrixes of the present invention can be used as refractive index matching components, filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided. Nanostructures having high quantum efficiency, small size, and/or a narrow size distribution are also described, as are methods of producing indium phosphide nanostructures and core-shell nanostructures with Group II-VI shells.Type: ApplicationFiled: November 18, 2013Publication date: June 5, 2014Applicant: Nanosys, Inc.Inventors: Mingjun Liu, Robert S. Dubrow, William P. Freeman, Adrienne D. Kucma, J. Wallace Parce
-
Publication number: 20140151997Abstract: Luminescent borates, luminescent materials, and articles incorporating such borates are provided herein. An embodiment of a luminescent borate includes a host borate that has a B9O16-comprising crystal lattice. Neodymium and/or ytterbium are present within the host borate, and one or more substitutable elements are optionally present along with the neodymium and/or ytterbium within the host borate. The one or more substitutable elements are different from neodymium and ytterbium.Type: ApplicationFiled: March 14, 2013Publication date: June 5, 2014Applicant: HONEYWELL INTERNATIONAL INC.Inventors: James Kane, Carsten Lau, William Ross Rapoport
-
Publication number: 20140153217Abstract: Disclosed are an optical member, a display device including the same, and a method of fabricating the same. The optical member includes a host layer; a plurality of first wavelength conversion particles in the host layer; and a plurality of second wavelength conversion particles in the host layer, wherein the first wavelength conversion particles include compound semiconductors, and the second wavelength conversion particles include phosphors.Type: ApplicationFiled: June 8, 2012Publication date: June 5, 2014Applicant: LG INNOTEK CO., LTD.Inventor: Mun Suk Kang
-
Patent number: 8741156Abstract: The subject of the invention is a hybrid photocatalyst which is a layered aluminosilicate, possibly organically modified, containing compounds introduced into the aluminosilicate galleries bearing groups such as porphyrin, rose bengal, anthracene, pyrene, perylene, tetracene, rubrene, naphthalene, phthalocyanines, coumarins, and methylene blue, which are organic chromophores able to absorb visible and/or ultraviolet light and sensitize photochemical reactions. The invention includes also the methods of synthesis and application of the photocatalysts for the photocatalytical degradation of water pollutants.Type: GrantFiled: August 25, 2011Date of Patent: June 3, 2014Assignee: Uniwersytet JagiellonskiInventors: Maria Nowakowska, Krzysztof Szczubialka, Dominik Drozd
-
Publication number: 20140132892Abstract: A curable composition and use thereof are provided. The composition can be useful in exhibiting excellent processability and workability, and providing a cured product which exhibits superior light extraction efficiency, crack resistance, hardness, thermal shock resistance, and adhesive properties, has superior reliability under severe conditions for a long period of time and prevents opacity and stickiness onto a surface thereof when cured. Also, the curable composition capable of preventing precipitation of an additive such as a fluorescent material or a photoconversion material and being formed into a cured product having excellent transparency even when the additive is added to the curable composition can be provided.Type: ApplicationFiled: January 22, 2014Publication date: May 15, 2014Applicant: LG CHEM, LTD.Inventors: Min JIN KO, Myung Sun MOON, Jae Ho JUNG, Bum Gyu CHOI, Dae Ho KANG, Min Kyoun KIM, Byung Kyu CHO
-
Patent number: 8722777Abstract: A highly loaded concentrate pellet composition includes an active ingredient in a concentration of at least about 60% by weight, and a low molecular weight binder in a concentration of up to about 35% by weight. The active ingredient is substantially evenly dispersed in the binder. The binder has a melting point that permits the composition to melt under shear in an extruder. The binder is non-metallocene and non-stearic.Type: GrantFiled: October 7, 2011Date of Patent: May 13, 2014Assignee: Thermocolor LLCInventor: Glen Alan Hirschfeld
-
Publication number: 20140127490Abstract: An aerogel fabricated by forming an aqueous suspension including carbon nanotubes and a surfactant, agitating the aqueous suspension, and centrifuging the agitated suspension to form a supernatant including the carbon nanotubes. The supernatant is concentrated to form a concentrated suspension including the carbon nanotubes, and a hydrogel is formed from the concentrated suspension. The hydrogen is contacted with a strong acid to form an acidic hydrogel and to remove surfactant from the hydrogel, and then neutralized. An aerogel is formed from the hydrogel. The aerogel may consist essentially of carbon nanotubes. A composite may be formed from the hydrogel or the aerogel by infiltrating the hydrogel or the aerogel with a polymeric material and curing or pyrolyzing the polymeric material. The composite may be electrically conductive, transparent, flexible, superelastic, or any combination thereof. A device, such as a flexible conductor, sensor, or electrode may include the aerogel or the composite.Type: ApplicationFiled: April 4, 2012Publication date: May 8, 2014Applicant: CARNEGIE MELLON UNIVERSITYInventors: Mohammad F. Islam, Kyu Hun Kim, Youngseok Oh, Ilha Lee
-
Publication number: 20140124813Abstract: A phosphor sheet-forming resin composition uses a low-cost resin material having high light fastness and low visible light absorption and is capable of providing a phosphor sheet at low cost with deterioration of a phosphor due to moisture being suppressed. The resin composition contains a film-forming resin composition and a powdery phosphor that emits fluorescence when irradiated with excitation light. The film-forming resin composition used contains a polyolefin copolymer component and a maleic anhydride component. A sulfurized phosphor, an oxide-based phosphor, or a phosphor mixture thereof is preferably used as the phosphor.Type: ApplicationFiled: July 5, 2012Publication date: May 8, 2014Applicant: DEXERIALS CORPORATIONInventors: Yasushi Ito, Yoshifumi Ueno, Hirofumi Tani
-
Patent number: 8715530Abstract: A fluorescent paste that can form a fluorescent film and can be manufactured without a binder resin and has a high recording density and peel resistance Fluorescent fine particles each coated with a film formed of a film compound having a reactive group and a curing agent having a plurality of crosslinking reaction groups each reacting with the reactive group to form bonds are blended with a solvent to manufacture fluorescent paste. The fluorescent paste is applied to a substrate coated with a film formed of a second film compound having a second reactive group and is cured by crosslinking reactions between the reactive group and the second reactive group, and the crosslinking reaction groups to form a fluorescent film.Type: GrantFiled: June 5, 2008Date of Patent: May 6, 2014Assignee: Empire Technology Development LLCInventor: Kazufumi Ogawa
-
Publication number: 20140117387Abstract: LED dies are suspended in an ink and printed on a first support substrate to form a light emitting layer having a light emitting surface emitting primary light, such as blue light. A mixture of a transparent binder, phosphor powder, and transparent glass beads is formed as an ink and printed over the light emitting surface. The mixture forms a wavelength conversion layer when cured. The beads are preferably sized so that the tops of the beads protrude completely through the conversion layer. Some of the primary light passes through the beads with virtually no attenuation or backscattering, and some of the primary light is converted by the phosphor to secondary light. The combination of the secondary light and the primary light passing though the beads may form white light. The overall color is highly controllable by controlling the percentage weight of the beads.Type: ApplicationFiled: May 31, 2013Publication date: May 1, 2014Inventors: William J. Ray, Reuben Rettke, Mark D. Lowenthal, Alexander Ray
-
Publication number: 20140117841Abstract: A conversion element for the wavelength conversion of electromagnetic radiation from a first wavelength range to electromagnetic radiation from a second wavelength range, which includes longer wavelengths than the first wavelength range, the conversion element includes: a matrix material, the optical refractive index of which is temperature-dependent, and at least two different types of luminophore particles wherein a multiplicity of luminophore particles of each of the types are distributed in the matrix material, luminophore particles of different types differ from one another in terms of average particle size and/or material, the conversion element, upon excitation by electromagnetic radiation from the first wavelength range emits mixed radiation including electromagnetic radiation from the first and the second wavelength range, and the correlated color temperature and/or the color locus of the mixed radiation remain(s) substantially the same when the matrix material is at a temperature of between 25° C.Type: ApplicationFiled: May 9, 2012Publication date: May 1, 2014Applicant: OSRAM GMBHInventor: Reiner Windisch
-
Patent number: 8709795Abstract: A light transformation particle is provided. The light transformation particle of the invention includes a light-shifting layer containing at least one light-emitting material, wherein the light-emitting layer transforms ultraviolet light, yellow-green light, or infrared light to red-orange light or blue-violet light. The light transformation particle further includes a core layer and/or a shell layer. The present invention further provides a photobioreactor containing the light transformation particle of the invention.Type: GrantFiled: February 4, 2010Date of Patent: April 29, 2014Assignee: Industrial Technology Research InstituteInventors: Wen-Chang Lu, Chung-Cheng Han, Yun-Huin Lin, Hom-Ti Lee
-
Publication number: 20140103226Abstract: The present invention relates to the use of nanosystems as non deactivable security markers comprising metal atomic quantum clusters (AQCs) of at least two different size distributions encapsulated in a cavity with an inner diameter less than or equal to approximately 10 nm. These nanosystems are luminescence, particularly fluorescence after external excitation. The invention also relates to security documents, articles or elements incorporating these markers as well as to a method and a system for detecting the same.Type: ApplicationFiled: June 14, 2012Publication date: April 17, 2014Applicants: NANOGAP SUB-NM POWDER, SOCIEDAD ANONIMA, Fabrica Nacional De Moneda Y Timbre-Reeal Casa De La MonedaInventors: Manuel Arturo Lopez Quintela, Vicente Garcia Juez
-
Patent number: 8697179Abstract: A method of evaluating a coating applied to a surface comprises the step of applying the coating to the surface. The coating including a conversion gel to chemically bind the surface and an indicator substantially uniformly distributed throughout the coating wherein the indicator modifies an appearance of the coating. The method further comprising the step of determining whether the indicator is present on the surface at a substantially uniform concentration.Type: GrantFiled: September 3, 2010Date of Patent: April 15, 2014Assignee: The Boeing CompanyInventors: Joseph H. Osborne, Ronald R. Stephenson, Kenneth A. Krienke, Larry K. Olli
-
Publication number: 20140097461Abstract: A phosphor sheet-forming resin composition uses a low-cost resin material having high light fastness and low visible light absorption and is capable of providing a phosphor sheet at low cost with deterioration of a phosphor due to moisture being suppressed. The phosphor sheet-forming resin composition contains a film-forming resin composition and a powdery phosphor that emits fluorescence when irradiated with excitation light. The film-forming resin composition contains a hydrogenated styrene-based copolymer, and uses a sulfide-based phosphor as the phosphor. Examples of the hydrogenated styrene-based copolymer include hydrogenated products of styrene-ethylene-butylene-styrene block copolymers. CaS:Eu is used as a preferred sulfide-based phosphor.Type: ApplicationFiled: July 5, 2012Publication date: April 10, 2014Applicant: DEXERIALS CORPORATIONInventors: Yasushi Ito, Yoshifumi Ueno, Hirofumi Tani
-
Patent number: 8693627Abstract: In an embodiment, an X-ray detector has a transmissive fluorescence generating portion, and a reflective fluorescence generating portion. The transmissive and reflective fluorescence generating portions have at least one of an intensifying screen having a phosphor layer that contains praseodymium-activated gadolinium oxysulfide phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 60% by volume or more, and an intensifying screen having a phosphor layer that contains europium-activated barium fluorochloride phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 45% by volume or more.Type: GrantFiled: May 22, 2012Date of Patent: April 8, 2014Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.Inventors: Eiji Oyaizu, Akihisa Saito, Yoshitaka Adachi, Kazumitsu Morimoto
-
Publication number: 20140077132Abstract: Provided is a hollow particle aggregate formed by aggregating a plurality of self-organizable particles, wherein a metal core is modified by a surface modifier for a metal core comprising a first segment comprising an optionally branched fluorinated alkylene glycol group, an optionally branched fluorinated alkylene group, or an optionally branched fluorinated azaalkylene group; a second segment comprising at least one hydrophilic group and bonding to one of the ends of a main chain of the first segment; and a functional group that bonds directly or indirectly to the another end of the main chain of the first segment and is able to bond to the metal core.Type: ApplicationFiled: February 22, 2012Publication date: March 20, 2014Applicant: National University Corporation,HokkaidoUniversityInventors: Kuniharu Ijiro, Kenichi Niikura, Naoki Iyo, Takashi Nishio
-
Patent number: 8663820Abstract: The invention relates to a printed document of value having at least one authenticity feature in the form of a luminescent substance based on doped host lattices. The host lattice has a strong crystal field and is doped with at least one chromophore with the electron configuration (3d)2.Type: GrantFiled: March 5, 2002Date of Patent: March 4, 2014Assignee: Giesecke & Devrient GmbHInventors: Thomas Giering, Rainer Hoppe, Fritz Stahr
-
Publication number: 20140054501Abstract: A buoyant article comprising a polymer containing particles of a photoluminescent material having a particle size of between 10 ?m and 250 ?m distributed throughout the polymer.Type: ApplicationFiled: August 7, 2009Publication date: February 27, 2014Applicant: Visual Signals Ltd.Inventor: Matthew Jess
-
Patent number: 8652355Abstract: Self-adhesive polymer having a relative permittivity of more than 4.5 useful as a matrix of a self-adhesive electroluminescence mass.Type: GrantFiled: December 3, 2009Date of Patent: February 18, 2014Assignee: tesa SEInventors: Daniel Klier, Berit Guse
-
Publication number: 20140043790Abstract: Disclosed are a light conversion member, a display device including the same, and a method for fabricating the same. The light conversion member includes a host, a plurality of light conversion particles in the host, and a ferroelectric material in the host.Type: ApplicationFiled: March 21, 2012Publication date: February 13, 2014Applicant: LG INNOTEK CO., LTD.Inventors: Soon Young Hyun, June Roh, Kyung Jin Kim, Jae Hong Lee, Ja Ram Kim
-
Patent number: 8643038Abstract: Light emitting devices include a solid state lighting source and a recipient luminophoric medium for down-converting at least some of the radiation emitted by the solid state lighting source. The recipient luminophoric medium includes a first material that down-converts the radiation emitted by the solid state lighting source to radiation having a peak wavelength in the green color range that has a full width half maximum emission bandwidth that extends into the cyan color range, and at least one additional material that down-converts the radiation emitted by the solid state lighting source to radiation having a peak wavelength in another color range.Type: GrantFiled: March 9, 2010Date of Patent: February 4, 2014Assignee: Cree, Inc.Inventors: Brian Thomas Collins, Jasper Cabalu
-
Publication number: 20140030507Abstract: A fluorescent film according to the present invention includes a transparent resin layer which dispersively holds semiconductor nanocrystals. The semiconductor nanocrystals are quantum dot phosphors having fluorescence excitation spectra that differ depending on particle size of the quantum dot phosphors. The transparent resin layer is either water soluble or water dispersible. This makes it possible to uniformly disperse the semiconductor nanocrystals in a highly dense and highly uniform state, which contributes to implementing a thin fluorescent film having high reliability, high efficiency, and high color rendering properties.Type: ApplicationFiled: September 26, 2013Publication date: January 30, 2014Applicant: PANASONIC CORPORATIONInventors: Shinji YOSHIDA, Tsuyoshi TANAKA, Takuma KATAYAMA, Kazuhiko YAMANAKA
-
Publication number: 20140027674Abstract: Intended is a phosphor of the formula: (A1-xBx)3C5O12 wherein A is Y, Gd, and/or Lu, B is Ce and/or Tb, C is Al and/or Ga, and 0.002?x?0.2. A phosphor precursor is prepared by suspending gamma-alumina particles having a specific surface area of at least 50 m2/g and dissolving a rare earth element salt in water to form a suspended aqueous to solution, adding urea thereto, heating the solution to form mixed fine particles of gamma-alumina and rare earth element salt, separating, and firing the mixed fine particles at 600-1,000° C. to form mixed oxide fine particles of rare earth oxide and alumina.Type: ApplicationFiled: July 23, 2013Publication date: January 30, 2014Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Hirofumi KAWAZOE, Kazuhiro WATAYA
-
Publication number: 20140008690Abstract: A phosphor for light emitting device of an embodiment includes: a phosphor particle composed of at least one selected from an alkaline earth silicate phosphor, a lanthanum oxysulfide phosphor, and a zinc sulfide phosphor; and a surface treatment agent, provided to cover a surface of the phosphor particle, of at least one selected from a silane coupling agent and an acrylic emulsion. A luminance maintenance ratio of the phosphor represented by a formula: luminance B/luminance A×100(%) , is 98% or more, wherein the luminance A is a luminance of the phosphor made to emit under a condition of temperature: 23° C., humidity: 40%, and the luminance B is a luminance of the phosphor made to emit under a condition of temperature: 23° C., humidity: 40% after leaving the phosphor under a condition of temperature: 60° C., humidity: 90% for 12 hours.Type: ApplicationFiled: September 13, 2013Publication date: January 9, 2014Applicants: TOSHIBA MATERIALS CO., LTD., KABUSHIKI KAISHA TOSHIBAInventors: Yoshitaka FUNAYAMA, Hirofumi TAKEMURA
-
Publication number: 20140003074Abstract: A headlamp (1) includes a laser diode (2) for emitting a laser beam and a light-emitting section (5), which contains a fluorescent substance for emitting fluorescence upon receiving the laser beam emitted from the laser diode (2) and diffusing particles (15) for diffusing the laser beam.Type: ApplicationFiled: March 8, 2012Publication date: January 2, 2014Inventor: Katsuhiko Kishimoto