With Plural Luminescent Material Or Plural Luminescent Containing Layers Or Areas Patents (Class 250/486.1)
  • Patent number: 10606126
    Abstract: The present disclosure provides a liquid crystal display device including a light source unit which supplies light to a liquid crystal panel, a lower polarizing plate disposed below the liquid crystal panel, an upper polarizing plate, a light absorption filter, and a fluorescent filter disposed above the liquid crystal panel. According to the present disclosure, when a laser pointer in a visible ray region illuminates after implementing a display image, light irradiated by the laser is absorbed by the fluorescent filter and the light absorption filter to convert the light into red, green, and blue light to be emitted, thereby improving visibility in accordance with illumination of a laser pointer.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: March 31, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: HyunSeung Kim, YoonJung Eo
  • Patent number: 10495766
    Abstract: An optoelectronic neutron detector and method for detecting nuclear material having a neutron capture and scatter medium receiving neutrons and producing secondary charged particles, a photodetector detecting emitted light from the secondary charged particles and outputting a detector signal, and a controller receiving the detector signal and providing an alert or quantitative indication of detected nuclear material in response to the detector signal.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: December 3, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventor: Roy Clarke
  • Patent number: 10490593
    Abstract: An active matrix image sensing device includes an image sensing substrate and a scintillator substrate. The image sensing substrate has a plurality of image sensing pixels. The scintillator substrate is disposed opposite to the image sensing substrate and includes a first substrate, a plurality of guiding members, a reflective layer and a scintillator layer. The guiding members are disposed on the first substrate and protruded from the first substrate toward the image sensing substrate. The guiding members are located corresponding to the image sensing pixels, respectively. The reflective layer is disposed on the guiding members, and the scintillator layer is disposed between the reflective layer and the image sensing substrate.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: November 26, 2019
    Assignee: Innolux Corporation
    Inventor: Chih-Hao Wu
  • Patent number: 10073333
    Abstract: A light irradiation device for emitting light of two or more components by laser light, which a laser light source emits, to an outside, includes a diffusion optical path change member configured to convert a first color component of the laser light into diffusion light and change an optical path of the first color component; a phosphor configured to generate fluorescence of a second color component different from the first color component based on the laser light, and change an optical path of the second color component; and an optical path switch member configured to switch between a first optical path for emitting the first color component to the outside and a second optical path for emitting the second color component to the outside. Light going straight at a light diffusion position of the diffusion optical path change member is not emitted to the outside.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: September 11, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takehiro Nishimori, Kazuhiro Fujita, Toshiharu Murai, Tatsuya Takahashi, Junichi Kitabayashi, Kaoru Itoh, Makoto Hirakawa
  • Patent number: 9958392
    Abstract: An optical filter system for florescence observation comprises an illumination light filter (I) and an observation light filter (O). The observation light filter has plural transmitting regions (D1O,D2O) allowing fluorescent light to traverse the observation light filter. Blocking regions (S0O,S1O) separate the transmitting regions. The illumination light filter has transmitting regions (D0I,D1I) where the observation light filter has a corresponding blocking region. The illumination light filter has blocking regions (S1I,S2I) where the observation light filter has a corresponding transmitting region. The plural transmitting regions of the illumination light filter hallow for an improved color impression in the normal light observation.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: May 1, 2018
    Assignee: CARL ZEISS MEDITEC AG
    Inventors: Christoph Hauger, Roland Guckler, Marco Wilzbach, Helge Jess, Selamawit Getachew Kelemu, Holger Matz
  • Patent number: 9814791
    Abstract: Dental contrast formulations (“fillers”) of tailorable X-Ray radiopacity and methods for their use are provided. The disclosed fillers include mixtures of solid particles suspended in a biocompatible fluid. The solid particles contain one or more X-ray radiopaque materials. The biocompatible fluid can also contain one or more soluble X-ray radiopaque components. By controlling the composition of the solid particles, the composition of the biocompatible fluid, and the loading of the solid particles in the biocompatible fluid, the X-ray radiopacity and stability of the filler can be tailored to allow for improved discrimination of the filler within periodontal pockets, relative to adjacent soft tissue and teeth, so that the 3-D shape, volume, and depth of the pocket can be precisely and rapidly determined by X-Ray imaging.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: November 14, 2017
    Assignees: Augusta University Research Institute, Inc., Georgia Tech Research Corporation
    Inventors: Christopher Cutler, Kenneth H. Sandhage
  • Patent number: 9671536
    Abstract: A multicolor electronic display is based on an array of luminescent semiconductor nanocrystals. Nanocrystals which emit tight of different colors are grouped into pixels. The nanocrystals are optically pumped to produce a multicolor display. Different sized nanocrystals are used to produce the different colors. A variety of pixel addressing systems can be used.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: June 6, 2017
    Assignee: The Regents of the University of California
    Inventors: Shimon Weiss, Michael C. Schlamp, A. Paul Alivisatos
  • Patent number: 9638396
    Abstract: A light source using a wavelength conversion member is increased in brightness. A wavelength conversion element 11 includes a plurality of wavelength conversion members 12 bundled together, each containing a dispersion medium and phosphor powder dispersed in the dispersion medium.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: May 2, 2017
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Masaaki Kadomi, Yoshimasa Yamaguchi, Takashi Nishimiya
  • Patent number: 9634270
    Abstract: A method for manufacturing a flexible display panel and the flexible display device are disclosed. The method for manufacturing the flexible display panel includes: forming a substrate, a flexible display and an overcoat layer on a support substrate in sequence; flipping over so that one side provided with the support substrate is placed upward; stripping off the support substrate; coating a curable material on a surface obtained after the support substrate is stripped off; and performing a curing process so that the coated curable material is cured to form a protective film. The method for manufacturing the flexible display panel can form the protective film without adopting laminating/bonding devices, is simple and easy, and does not require the vacuum defoamation process subsequently.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: April 25, 2017
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Lu Liu, Ming Che Hsieh, Chunyan Xie, Tao Sun
  • Patent number: 9488581
    Abstract: An arrangement for optical measurement of at least one process variable in a medium, comprising: at least one light source; at least one light receiver; an optical sensor element at least one data processing unit; and a light conductor. The light conductor connects the light source with the optical sensor element and the optical sensor element with the light receiver. The light conductor is embodied with at least three arms, wherein the first arm is arranged at the light source, the second arm is arranged at the light receiver and the third arm is arranged at the optical sensor element first arm and the second arm combine to form the third arm. The invention relates further to a measuring device comprising an above described arrangement.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: November 8, 2016
    Assignee: Endress+Hauser Conducta GmbH+Co. KG
    Inventors: Andreas Lobbert, Ronny Michael, Christian Fanselow
  • Patent number: 9339191
    Abstract: Provided is a near-infrared spectroscopy apparatus using a phosphor. [Object]: Information in a specimen is observed by using light without contacting an optical fiber and an electronic circuit with the specimen. [Means for Solution]: A small and lightweight phosphor is contacted with the specimen to measure the fluorescence intensity at a separate position.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: May 17, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Kiguchi, Tsukasa Funane, Kei Utsugi, Atsushi Suzuki
  • Patent number: 9329301
    Abstract: A radiation detection device 80 according to an embodiment of the present invention is a radiation detection device for a foreign substance inspection using a subtraction method, and includes a first radiation detector 32 that detects radiation in the first energy range transmitted through a specimen; and a second radiation detector that detects radiation in the second energy range higher than the radiation in the first energy range, and the thickness of a first scintillator layer 322 of the first radiation detector 32 is smaller than the thickness of a second scintillator layer 422 of the second radiation detector 42, and a first area S1 of each pixel 326 in a first pixel section 324 of the first radiation detector 32 is smaller than a second area S2 of each pixel 426 in a second pixel section 424 of the second radiation detector 42.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: May 3, 2016
    Assignee: HAMAMATSU PHOTONICS K. K.
    Inventor: Toshiyasu Suyama
  • Patent number: 9194963
    Abstract: A scintillating module is provided which includes a first scintillating layer including a plurality of scintillators extending in a first direction; a second scintillating layer including a plurality of scintillators extending in a second direction and stacked in a third direction with respect to the first scintillating layer, wherein the first, second and third directions are orthogonal to each other.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: November 24, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Nam Soo Myung, Moon Youn Jung, Dong-Ho Shin
  • Patent number: 9110175
    Abstract: Computed radiography imaging plates incorporating an intensifying material that is coupled to or intermixed with the phosphor layer, allowing electrons and/or low energy x-rays to impart their energy on the phosphor layer, while decreasing internal scattering and increasing resolution. The radiation needed to perform radiography can also be reduced as a result.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: August 18, 2015
    Assignee: Ciena Corporation
    Inventors: Nathaniel F. Henry, Alex K. Moses
  • Patent number: 9006685
    Abstract: A device (10) and a method for analyzing a sample (16) containing fluorophores use a light source (12) emitting light (?ex) onto the sample (16), and onto a fluorescence standard (14). The fluorophores of the sample (16), given an immission of light of a first wavelength (?ex1), have a first excitation efficiency and, given an immission of light of a second wavelength (?ex2), have a second excitation efficiency. The fluorescence standard (14), given the same immissions of light, has a third excitation efficiency and, a fourth excitation efficiency. An optical element (20) which is arranged between the light source (12) and the sample (16) and/or (12) the fluorescence standard (14) adapts, due to its optical property, a first difference between the first excitation efficiency and the second excitation efficiency and a second difference between the third excitation efficiency and the fourth excitation efficiency to each other.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: April 14, 2015
    Assignee: LRE Medical GmbH
    Inventors: Rafael Egger, Jörg Zeiner
  • Patent number: 9006667
    Abstract: A material may include a medium and carbon nanotubes dispersed in the medium. Fluorescent moieties may be attached to functional groups on a first quantity of the carbon nanotubes. The fluorescent moieties may be in a concentration in the material sufficient to make the material fluoresce in the presence of radiation. The fluorescent moieties may have an emission wavelength that is in or below the visible spectrum. The carbon nanotubes may be dispersed in the medium in a concentration sufficient to make the material electrically conductive at or above the material's electrical percolation threshold. Any suitable product may include the material. Methods for verifying the authenticity of the product may include detecting emissive radiation, testing electrical conductivity, and determining the presence of a structural characteristic of the carbon nanotubes.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: April 14, 2015
    Assignee: International Business Machines Corporation
    Inventors: Dylan J. Boday, Jason T. Wertz
  • Publication number: 20150076360
    Abstract: A radiation detector can include a solid organic/plastic scintillator that enables neutron and gamma interactions to be readily distinguished via pulse-shape discrimination. Embodiments make use of a scintillator including a polymer matrix with a dispersed scintillation material exhibiting thermally activated delayed fluorescence. The scintillation material can include an organic luminescent material that is free of heavy metals and in which excited triplet states are efficiently promoted into excited singlet states by thermal energy, the excited singlet states then generating a delayed fluorescence when decaying to ground state. As a result, the scintillation material, when exposed to ionizing radiation, can produce a combination of prompt and delayed fluorescence sufficient to enable neutron and gamma interactions to be readily distinguished via pulse-shape discrimination techniques.
    Type: Application
    Filed: September 12, 2014
    Publication date: March 19, 2015
    Inventor: Peter R. Menge
  • Patent number: 8952341
    Abstract: A low rare earth mineral photoluminescent structure for generating long-persistent luminescence that utilizes at least a phosphorescent layer comprising one or more phosphorescent materials having substantially low rare earth mineral content of less than about 2.0 weight percent, and one or more fluorescent layers is disclosed. Further disclosed are methods for fabricating and using the inventive low rare earth mineral photoluminescent structure. A low rare earth mineral photoluminescent composition for generating long-persistent luminescence that utilizes at least one or more phosphorescent materials having substantially low rare earth mineral content of less than about 2.0 weight percent and one or more fluorescent materials is also disclosed, as well as, the methods for fabricating and using the inventive low rare earth mineral photoluminescent composition.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: February 10, 2015
    Assignee: Performance Indictor, LLC
    Inventors: Edward D. Kingsley, Satish Agrawal
  • Publication number: 20140361179
    Abstract: A device designed to be used for neutron imaging, immersed in a medium containing specimens to be analyzed, comprises a first converter comprising a first material capable of converting thermal neutron radiation into remnant beta radiation and a second converter comprising a second material capable of converting a remnant beta radiation into light radiation, the second converter being in contact with the first converter. A method is also provided for neutron imaging immersed in a medium and using the device.
    Type: Application
    Filed: November 21, 2012
    Publication date: December 11, 2014
    Inventor: Eric Simon
  • Publication number: 20140301527
    Abstract: In one embodiment, a scintillator array includes a plurality of scintillator blocks, and a reflective layer part interposed between the adjacent scintillator blocks. The plurality of scintillator blocks are integrated by the reflective layer part. The reflective layer part includes reflective particles dispersed in a transparent resin. The reflective particles include at least one selected from titanium oxide particles and tantalum oxide particles, and have a mean particle diameter of 2 ?m or less. The number of the reflective particles existing per unit area of 5 ?m×5 ?m of the reflective layer part is in a range of 100 or more and 250 or less.
    Type: Application
    Filed: May 29, 2014
    Publication date: October 9, 2014
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Kazumitsu MORIMOTO, Akihisa SAITO, Yoshitaka ADACHI, Masaki TOYOSHIMA, Eiji OYAIZU
  • Publication number: 20140263991
    Abstract: Various embodiments are described herein for a radiation dosimetry apparatus and associated methods for measuring radiation dose. In some embodiments, the apparatus includes multiple scintillating elements for detecting amounts of radiation dose at multiple points within a detection region. Each of the scintillating elements generates light in response to radiation interacting within their volume. A light guide combines the light generated by all of the scintillating elements as well as radiation-induced contaminated optical energy and transmits the combined light to a spectral analysis setup. Multi or hyper-spectral calibration technique allows calculating the dose or dose rate at the positions of the different scintillating elements. The calibration technique isolates the light produced by a given scintillating element from the other scintillating elements as well as any other source of radiation-induced contaminating light.
    Type: Application
    Filed: May 24, 2012
    Publication date: September 18, 2014
    Applicants: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM, UNIVERSITE LAVAL
    Inventors: Francois Therriault-Proulx, Luc Beaulieu, Louis Archambault, Sam Beddar
  • Patent number: 8829449
    Abstract: This scintillator plate 1 is a scintillator plate which is a member of a flat plate shape to emit scintillation light according to incidence of radiation transmitted by an object A and which is used in an image acquisition device to condense and image the scintillation light, the scintillator plate comprising: a partition plate 2 of a planar shape which transmits radiation; a scintillator 3 of a flat plate shape which is arranged on one surface 2a of the partition plate 2 and which converts the radiation into scintillation light; and a scintillator 4 of a flat plate shape which is arranged on the other surface 2b of the partition plate 2 and which converts the radiation into scintillation light.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: September 9, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Toshiyasu Suyama, Mototsugu Sugiyama
  • Publication number: 20140231676
    Abstract: A scintillator can include a photosensor surface and a side surface adjacent to the photosensor surface. The photosensor surface can be adapted to provide scintillating light to a photosensor. In an embodiment, the scintillator can have grooves along the side surface, wherein the grooves have lengths extending in a direction toward the photosensor surface. In another embodiment, the scintillator can include a reflector and a clear adhesive between the scintillator and reflector. In a particular embodiment, the reflector is substantially white and has a gloss value of at least 50. The scintillator can be in the form of a scintillator element of an array or in the form of a single scintillator. The scintillator can be coupled to a photosensor within a radiation detection apparatus. For an array, a process of forming the array can include forming grooves along one or more side surfaces during a fabrication process.
    Type: Application
    Filed: September 27, 2013
    Publication date: August 21, 2014
    Inventor: Louis Perna
  • Publication number: 20140224993
    Abstract: Embodiments pertain to a method and apparatus for detection of radiation. Embodiments relate to the detection of fast and/or thermal neutrons. Embodiments are directed to detection of neutrons in high backgrounds of gamma rays. Embodiments can have high sensitivity and/or high gamma discrimination. Embodiments can include a given single material that can detect fast neutrons and simultaneously detect gamma rays with moderate energy resolution. Embodiments pertain to liquid, viscous liquid, gel, and/or solid scintillating materials. Embodiments relate to a scintillating matrix, such as a liquid, having a highly polar matrix, such as a liquid solvent, dissolved dyes, and a high concentration of a dissolved organo metallic compound. The use of a single material for a large area detector of fast neutrons and gamma rays can provide material and cost benefits.
    Type: Application
    Filed: June 29, 2012
    Publication date: August 14, 2014
    Applicant: NANOPTICS, INCORPORATED
    Inventors: Youngwook Noh, Richard T. Farley, James K. Walker
  • Publication number: 20140197321
    Abstract: The present invention provides a gamma-neutron detector based on mixtures of thermal neutron absorbers that produce heavy-particle emission following thermal capture. The detector consists of one or more thin screens embedded in transparent hydrogenous light guides, which also serve as a neutron moderator. The emitted particles interact with the scintillator screen and produce a high light output, which is collected by the light guides into a photomultiplier tube and produces a signal from which the neutrons are counted. Simultaneous gamma-ray detection is provided by replacing the light guide material with a plastic scintillator. The plastic scintillator serves as the gamma-ray detector, moderator and light guide. The neutrons and gamma-ray events are separated employing Pulse-Shape Discrimination (PSD). The detector can be used in several scanning configurations including portal, drive-through, drive-by, handheld and backpack, etc.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 17, 2014
    Inventors: Joseph Bendahan, Edward James Morton
  • Publication number: 20140166887
    Abstract: Scintillator arrays and methods of making scintillator arrays are provided. One scintillator array includes a scintillator substrate having a plurality of scintillators spaced apart by gaps within the scintillator substrate and a smoothing layer overlaying a surface of the scintillator substrate within the gaps. The smoothing layer includes an organically modified silicate. The scintillator array also includes an optical reflector layer overlaying a surface of the smoothing layer within the gaps.
    Type: Application
    Filed: December 17, 2012
    Publication date: June 19, 2014
    Applicant: General Electric Company
    Inventors: James Edward Murphy, Kevin Paul McEvoy
  • Patent number: 8746896
    Abstract: A light source unit includes an excitation light source and a luminescent wheel on which luminescent light emitting areas including, on a reflecting surface, red and green luminescent materials which respectively emit light of red and green wavelength band, when receiving excitation light, and a diffuse transmission area which diffuses and transmits excitation light, are aligned end to end in a circumferential direction. An excitation light incident surface of a luminescent material layer of the luminescent wheel has a surface with a plurality of projecting bodies. Regular quadrangular pyramids are arranged thereon in a matrix with outer boundaries of bottom portions of adjacent regular quadrangular pyramids contacting each other. The pyramids rise at a rising angle of at least 30°, and a length of one side of an outer boundary of the bottom portion of the pyramid is between 10 and 100 ?m.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: June 10, 2014
    Assignees: Casio Computer Co., Ltd., Stanley Electric Co., Ltd.
    Inventors: Naotsugu Ogura, Hideki Nakamura, Takeshi Miyazaki, Osamu Umamine, Hiroki Masuda, Yasuyuki Kawakami
  • Patent number: 8723129
    Abstract: This scintillator plate 1 is a scintillator plate which is a member of a flat plate shape to emit scintillation light according to incidence of radiation transmitted by an object A and which is used in an image acquisition device to condense and image the scintillation light, the scintillator plate comprising: a partition plate 2 of a planar shape which transmits radiation; a scintillator 3 of a flat plate shape which is arranged on one surface 2a of the partition plate 2 and which converts the radiation into scintillation light; and a scintillator 4 of a flat plate shape which is arranged on the other surface 2b of the partition plate 2 and which converts the radiation into scintillation light.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: May 13, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Toshiyasu Suyama, Mototsugu Sugiyama
  • Patent number: 8723142
    Abstract: A light source device includes: a light emitting plate that has a plurality of segment regions including a transmissive portion that transmits light and a reflective portion on which a fluorescent substance layer; a light source that irradiates the fluorescent substance layer of the light emitting plate with the excitation light; a dichroic mirror that is disposed between the light source and the light emitting plate to transmit the excitation light and reflect fluorescent light from fluorescent substances of the fluorescent substance layer; and an optical device that condenses the excitation light transmitted by the transmissive portion of the light emitting plate and the fluorescent light reflected by the dichroic mirror on a single optical path to form a condensed light and radiate the condensed light toward the same direction.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: May 13, 2014
    Assignee: Casio Computer Co., Ltd.
    Inventors: Hideyuki Kurosaki, Hideaki Inoue
  • Publication number: 20140117244
    Abstract: A scintillator has a two-dimensional array of a plurality of columnar crystals which converts radiation into light, and a covering portion covering the two-dimensional array. The covering portion includes connecting portions configured to partially connect the columnar crystals while partially forming cavities in gaps between the columnar crystals in the two-dimensional array.
    Type: Application
    Filed: October 18, 2013
    Publication date: May 1, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tomoaki Ichimura, Satoshi Okada, Yohei Ishida, Akiya Nakayama
  • Publication number: 20140103227
    Abstract: A radiation detection system can include optical fibers and a material disposed between the optical fibers. In an embodiment, the material can include a fluid, such as a gas, a liquid, or a non-Newtonian fluid. In another embodiment, the material can include an optical coupling material. In a particular embodiment, the optical coupling material can include a silicone rubber. In still another embodiment, the optical coupling material has a refractive index less than 1.50. In still another embodiment, the radiation detection system can have a greater signal:noise ratio, a light collection efficiency, or both as compared to a conventional radiation detection system. Corresponding methods of use are disclosed that can provide better discrimination between neutrons and gamma radiation.
    Type: Application
    Filed: December 17, 2013
    Publication date: April 17, 2014
    Applicant: Saint-Gobain Ceramics & Plastics, Inc.
    Inventor: Peter R. Menge
  • Publication number: 20140091227
    Abstract: A neutron sensor includes neutron-sensing particles and a scintillator coating surrounding the neutron-sensing particles. In an embodiment, the neutron-sensing particles include 6LiF particles, the scintillator coating includes ZnS, or both. In another embodiment, the scintillator coating can coat more than one neutron-sensing particle. In a further embodiment, the scintillator coating is formed on neutron-sensing particles using precipitation techniques or fluidized bed processing.
    Type: Application
    Filed: September 26, 2013
    Publication date: April 3, 2014
    Inventors: Kan Yang, Peter R. Menge, Brian C. LaCourse
  • Publication number: 20140091234
    Abstract: A method to improve light extraction from scintillators in a gamma ray detector, the method including forming a roughened layer on a light-emitting surface of the scintillators, the roughened thin layer having a pillar/column or a corn-shaped structure.
    Type: Application
    Filed: October 2, 2012
    Publication date: April 3, 2014
    Inventors: Jerry WANG, Gin Chung WANG, Huini DU
  • Publication number: 20140091223
    Abstract: The disclosure relates to a scintillation pixel array, a radiation sensing apparatus, a scintillation apparatus, and methods of making a scintillation pixel array wherein scintillation pixels have beveled surfaces and a reflective material around the beveled surfaces. The embodiments described herein can reduce the amount of cross-talk between adjacent scintillation pixels.
    Type: Application
    Filed: September 12, 2013
    Publication date: April 3, 2014
    Inventor: Peter R. Menge
  • Patent number: 8686375
    Abstract: An active detector and methods for detecting molecules, including large molecules such as proteins and oligonucleotides, at or near room temperature based on the generation of electrons via field emission (FE) and/or secondary electron emission (SEE). The detector comprises a semiconductor membrane having an external surface that is contacted by one or more molecules, and an internal surface having a thin metallic layer or other type of electron emitting layer. The kinetic energy of molecules contacting the semiconductor membrane is transferred through the membrane and induces the emission of electrons from the emitting layer. An electron detector, which optionally includes means for electron amplification, is positioned to detect the emitted electrons.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: April 1, 2014
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Robert H. Blick, Lloyd M. Smith, Michael Westphall, Hua Qin
  • Patent number: 8664612
    Abstract: A scintillator detector of high-energy radiation comprising a semiconductor slab that is composed of alternating layers of barrier and well material. The barrier and well material layers are direct bandgap semiconductors. Bandgap of the well material is smaller than the bandgap of the barrier material. The combined thickness of the well layers is substantially less than the total thickness of said slab. The thickness of the barrier layers is substantially larger than the diffusion length of minority carriers. The thickness of the well layers is sufficiently large to absorb most of the incident scintillating radiation generated in the barrier layers in response to an ionization event from interaction with an incident high-energy particle.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: March 4, 2014
    Assignee: The Research Foundation for The State University of New York
    Inventors: Serge Luryi, Arsen Subashiev
  • Patent number: 8658990
    Abstract: Radiation dosimeters containing thin KCl:Eu2+ storage phosphors for quantifying and/or verifying the dose of radiation applied during radiation therapy. Methods for measuring the amount of radiation applied from a source of radiation and methods for treating a patient having a cancerous tumor are also provided.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: February 25, 2014
    Assignee: Washington University
    Inventor: Hui Li
  • Publication number: 20140034839
    Abstract: Provided is a scintillator used for detecting radiation in an X-ray CT scanner or the like, the scintillator having a unidirectional phase separation structure having an optical waveguide function, which eliminates the need of formation of partition walls for preventing crosstalks. The scintillator has the phase separation structure including: a first crystal phase including multiple columnar crystals having unidirectionality; and a second crystal phase filling space on the side of the first crystal phase. The second crystal phase includes a material represented by Cs3Cu2[XaY1-a]5, where X and Y are elements which are different from each other and which are selected from the group consisting of I, Br, and Cl, and 0?a?1 is satisfied.
    Type: Application
    Filed: October 8, 2013
    Publication date: February 6, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ryoko Horie, Nobuhiro Yasui, Yoshihiro Ohashi, Toru Den
  • Patent number: 8610078
    Abstract: The X-ray image detection apparatus 1 includes: a scintillator panel 10 including a phosphor 200 that is formed on a support 101 and emits fluorescence by irradiation of radiation; and a photodetector 40 that detects the fluorescence emitted by the phosphor as an electric signal, wherein the phosphor 200 includes a columnar section 20 formed by growing crystals of a fluorescent material in a columnar shape, and a non-columnar section 25 provided between the columnar section 20 and the support 101 and has a porosity lower than that of the columnar section 20, and the scintillator panel 10 is disposed at the rear side of the photodetector 40 in a radiation travelling direction, and in the phosphor 200, the non-columnar section 25 is disposed at a side opposite to the photodetector side.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: December 17, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Yasuhisa Kaneko, Haruyasu Nakatsugawa, Keiichirou Sato, Makoto Kitada, Kei Miura
  • Publication number: 20130320240
    Abstract: Partially and completely curved and spherical scintillation arrays are described. These arrays can provide improved imaging of a variety of subjects and objects.
    Type: Application
    Filed: June 4, 2013
    Publication date: December 5, 2013
    Inventor: Louis Perna
  • Publication number: 20130306881
    Abstract: Sensitive charge for passive dosimeter includes a plurality of flexible photostimulable screens designed to be stacked inside a dosimeter casing and each having a radiosensitive layer of radiophotoluminescent material which can therefore be read differentially by illumination. The screens being integral with a foldable support having two configurations, namely a folded detection configuration, in which the screens are stacked on one another, and an unfolded reading configuration, in which the screens are arranged alongside one another on the same face of the support. Intercalated sheets with reinforcing/absorbing effect can also be fixed to the support, alternating with the screens, the screens being separated from the adjacent screens by two folds and the sheets are separated from the adjacent sheets by two folds.
    Type: Application
    Filed: January 30, 2012
    Publication date: November 21, 2013
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Jean-Paul Negre
  • Publication number: 20130292572
    Abstract: A radiological image conversion panel 2 provided with a support 11 and a phosphor 18 which is formed on the support and contains a fluorescent material that emits fluorescence by radiation exposure. The phosphor includes a columnar section 34 formed by a group of columnar crystals which are obtained through columnar growth of crystals of the fluorescent material, and a non-columnar section 36. The columnar section and the non-columnar section are integrally formed to overlap in a crystal growth direction of the columnar crystals, and a porosity at the columnar section side of the non-columnar section is higher than a porosity at the support side of the non-columnar section.
    Type: Application
    Filed: June 27, 2013
    Publication date: November 7, 2013
    Inventors: Yasuhisa KANEKO, Haruyasu NAKATSUGAWA, Keiichirou SATO, Makoto KITADA, Kei MIURA
  • Publication number: 20130284934
    Abstract: A radiological image conversion panel 2 is provided with a phosphor 18 containing a fluorescent material that emits fluorescence by radiation exposure, in which the phosphor includes, a columnar section 34 formed by a group of columnar crystals which are obtained through columnar growth of crystals of the fluorescent material, and a non-columnar section 36, the columnar section and the non-columnar section are integrally formed to overlap in a crystal growth direction of the columnar crystals, and a thickness of the non-columnar section along the crystal growth direction is non-uniform in a region of at least a part of the non-columnar section.
    Type: Application
    Filed: June 26, 2013
    Publication date: October 31, 2013
    Inventors: Yasuhisa KANEKO, Haruyasu NAKATSUGAWA, Keiichirou SATO, Makoto KITADA, Kei MIURA
  • Publication number: 20130240742
    Abstract: A scintillation crystal capable of emitting scintillation light can have a main body and a feature extending from the main body along a side of the scintillation crystal. The feature can have a dimension that is no greater than 2.5 times a wavelength of the scintillating light. In an embodiment, the feature and the main body can have substantially the same composition, and in a further embodiment the scintillation crystal can be interface free between the feature and the main body. The feature can be formed along the side of the scintillation crystal by removing portions of the scintillation crystal. In particular, the feature can be formed by abrading a surface of the scintillation crystal with an abrasive material.
    Type: Application
    Filed: December 15, 2012
    Publication date: September 19, 2013
    Applicant: SAINT-GOBAIN CERAMICS & PLASTICS, INC.
    Inventor: Peter R. Menge
  • Patent number: 8530863
    Abstract: Systems and methods for document and product authentication using a variety of absorption and emission signatures are disclosed. Emission signatures in the form of florescent or phosphorescent coatings, inks and substrates are used for authentication and protection of items such as documents, currency, and secondary packaging for tobacco, luxury goods and pharmaceuticals. Spectrally overlapping absorption and emission materials are combined to provide a unique spectral fingerprint detectable by a scanner.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: September 10, 2013
    Assignee: Spectra Systems Corporation
    Inventor: Nabil M. Lawandy
  • Patent number: 8525120
    Abstract: A light emitting film is transferred to a light emitting plate serving as a transfer destination member, by a transfer method. The light emitting plate contains a first scintillator material for detecting ? ray. The light emitting film includes a protective layer, a light tight layer and a light emitting layer. The light emitting layer contains an adhesive material, and a second scintillator material added thereto for detecting ? ray. The light emitting film may be directly formed on a surface of a transparent member, a light receiving surface of a photomultiplier tube or the like by a transfer method. The light tight layer and the light emitting layer are arranged between the protective layer and the transfer destination member, and thus the light tight layer and the light emitting layer are protected physically.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: September 3, 2013
    Assignee: Hitachi Aloka Medical, Ltd.
    Inventor: Akinori Iwamoto
  • Publication number: 20130200266
    Abstract: A scintillator pixel array can include a plurality of scintillator pixels and a plurality of voids arranged in a checkerboard pattern. Each void can be defined by at least two surfaces having an adhesive disposed thereon. The scintillator pixel array can be made by fabricating an array of scintillator members and dissolvable members and dissolving the dissolvable members in a solvent.
    Type: Application
    Filed: December 12, 2012
    Publication date: August 8, 2013
    Applicant: SAINT-GOBAIN CERAMICS & PLASTICS, INC.
    Inventor: Louis Perna
  • Patent number: 8481977
    Abstract: A wavelength conversion chip is formed by depositing a wavelength conversion material on a substrate to form a layer, removing the resulting wavelength conversion layer from the substrate and then segmenting the wavelength conversion layer into a plurality of wavelength conversion chips. The wavelength conversion material can be annealed by thermal annealing or radiation annealing to increase the wavelength conversion efficiency of the chips or to sinter the wavelength conversion material to form a ceramic material. Optical coatings, vias, light extraction elements, electrical connections or electrical bond pads can be fabricated on the wavelength conversion chips.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: July 9, 2013
    Assignee: Goldeneye, Inc.
    Inventors: Karl W. Beeson, Scott M. Zimmerman, William R. Livesay
  • Publication number: 20130168560
    Abstract: The present invention provides a fast-neutron detector, comprising: a plastic scintillator array which includes at least one plastic scintillator unit, wherein sidewall surfaces of each plastic scintillator unit are covered or coated with a neutron-sensitive coating film. The fast-neutron detector based on such film-coated plastic scintillators according to the present invention advantageously addresses the mutual competition problem between a moderated volume and a measured volume in the prior art and can obtain a higher fast-neutron detecting efficiency.
    Type: Application
    Filed: December 24, 2012
    Publication date: July 4, 2013
    Applicant: Nuctech Company Limited
    Inventors: Yigang Yang, Qinjian Zhang, Yi Liu
  • Patent number: 8476083
    Abstract: Described herein is a time-gated, two-step FRET relay effective to provide temporal transference of a prompt FRET pathway, or provide spectro-temporal encoding analytical signals and other information. A FRET relay assembly includes a long lifetime FRET donor (for example, a lanthanide complex), a semiconductor quantum dot (QD) configured as an intermediate acceptor/donor in FRET, and a fluorescent dye configured as a terminal FRET acceptor, wherein the long lifetime FRET donor has an excited state lifetime of at least one microsecond and the QD and fluorescent dye each have excited state lifetimes of less than 100 nanoseconds.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: July 2, 2013
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: W. Russ Algar, Niko Hildebrandt, Alan L Huston, Igor L. Medintz