Patents by Inventor Gouji Kamimura
Gouji Kamimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9417336Abstract: A radiation image converting panel includes a flexible support, a photostimulable phosphor layer provided on the main surface of the support and made of a plurality of columnar crystals, a first protective film provided on the photostimulable phosphor layer, and a second protective film provided on the first protective film, the photostimulable phosphor layer is composed of a photostimulable phosphor including Eu-doped CsBr, the first protective film is provided so as to cover the upper surface and side surface of the photostimulable phosphor layer and fill a gap of the plurality of columnar crystals in the photostimulable phosphor layer, the pencil hardness of the second protective film is not more than the pencil hardness of the first protective film, and the radiation image converting panel has a flexibility of up to a bending radius of 15 mm.Type: GrantFiled: August 1, 2013Date of Patent: August 16, 2016Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Jun Sakurai, Katsuhiko Suzuki, Ichinobu Shimizu, Gouji Kamimura
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Publication number: 20150241571Abstract: A radiation image converting panel includes a support, a photostimulable phosphor layer provided on the front surface of the support and made of a plurality of columnar crystals, and a first excitation light absorbing layer provided on the photostimulable phosphor layer, each of the plurality of columnar crystals has a helical structure portion formed by stacking in a helical shape at the side close to the support and a columnar portion formed by extending from the helical structure portion toward the first excitation light absorbing layer, and the photostimulable phosphor layer accumulates incident radiation, and as a result of being irradiated with excitation light via the first excitation light absorbing layer, outputs light according to the accumulated radiation via the first excitation light absorbing layer.Type: ApplicationFiled: August 1, 2013Publication date: August 27, 2015Inventors: Jun Sakurai, Katsuhiko Suzuki, Ichinobu Shimizu, Gouji Kamimura
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Publication number: 20150226864Abstract: A radiation image converting panel includes a flexible support, a photostimulable phosphor layer provided on the main surface of the support and made of a plurality of columnar crystals, a first protective film provided on the photostimulable phosphor layer, and a second protective film provided on the first protective film, the photostimulable phosphor layer is composed of a photostimulable phosphor including Eu-doped CsBr, the first protective film is provided so as to cover the upper surface and side surface of the photostimulable phosphor layer and fill a gap of the plurality of columnar crystals in the photostimulable phosphor layer, the pencil hardness of the second protective film is not more than the pencil hardness of the first protective film, and the radiation image converting panel has a flexibility of up to a bending radius of 15 mm.Type: ApplicationFiled: August 1, 2013Publication date: August 13, 2015Inventors: Jun Sakurai, Katsuhiko Suzuki, Ichinobu Shimizu, Gouji Kamimura
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Patent number: 8008634Abstract: A radiation image converting panel has a structure capable of arbitrarily controlling a change in luminance distribution of an entire panel surface after formation of a moisture-resistant protective film. The radiation image converting panel comprises a radiation converting film doped with Eu and covered with a moisture-resistant protective film. The Eu concentration in the radiation converting film is preliminarily adjusted such that the Eu concentration at a central portion or peripheral portion of the film falls within an optimal range, and the other film portion is provided with a positive or negative concentration gradient such that the Eu concentration thereof gradually become higher or lower than the optimal range. The luminance distribution of the entire panel in which the moisture-resistant protective film has been formed can be controlled by providing the Eu concentration to be added with a concentration gradient.Type: GrantFiled: October 22, 2010Date of Patent: August 30, 2011Assignee: Hamamatsu Photonics K.K.Inventors: Jun Sakurai, Ichinobu Shimizu, Gouji Kamimura
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Patent number: 7994490Abstract: The present invention relates to a radiation image converting panel with a structure capable of arbitrarily controlling the luminance distribution of the panel surface after formation of a protective film according to usage conditions. The radiation image converting panel comprises a support body and a radiation converting film formed on the support body. The radiation converting film is formed on a film forming region which exists within a first main surface of the support body and includes at least a gravity center position of the first main surface. The film thickness of the radiation converting film is adjusted such that the maximum difference can be obtained in either one of a peripheral area and a middle area from a central area including the gravity center position.Type: GrantFiled: January 8, 2009Date of Patent: August 9, 2011Assignee: Hamamatsu Photonics K. K.Inventors: Jun Sakurai, Ichinobu Shimizu, Gouji Kamimura
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Publication number: 20110031415Abstract: The present invention relates a radiation image converting panel with a structure capable of arbitrarily controlling a change in luminance distribution of an entire panel surface after formation of a moisture-resistant protective film. The radiation image converting panel comprises a radiation converting film doped with Eu and covered with a moisture-resistant protective film. The Eu concentration in the radiation converting film is preliminarily adjusted such that the Eu concentration at a central portion or peripheral portion of the film falls within an optimal range, and the other film portion is provided with a positive or negative concentration gradient such that the Eu concentration thereof gradually become higher or lower than the optimal range. The luminance distribution of the entire panel in which the moisture-resistant protective film has been formed can be controlled by providing the Eu concentration to be added with a concentration gradient.Type: ApplicationFiled: October 22, 2010Publication date: February 10, 2011Inventors: Jun Sakurai, Ichinobu Shimizu, Gouji Kamimura
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Patent number: 7655927Abstract: The present invention relates to a radiation image converting panel with a structure to realize an improvement in moisture resistance in the periphery of the panel. The radiation image converting panel comprises a support body and a radiation converting film formed on the support body. The radiation converting film is formed on a film forming region which exists within a first main surface of the support body and includes at least a gravity center position of the first main surface. An average crystal diameter of columnar crystals located on a peripheral measuring area of the film forming region is controlled to be 1.3 times or more larger than an average crystal diameter of columnar crystals located on a central measuring area corresponding to a gravity center position of the film forming region, whereby moisture resistance in the periphery of the panel is improved, so that a sufficient fluorescence lifetime of the panel as a whole is maintained.Type: GrantFiled: January 8, 2009Date of Patent: February 2, 2010Assignee: Hamamatsu Photonics K.K.Inventors: Jun Sakurai, Ichinobu Shimizu, Gouji Kamimura
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Patent number: 7608835Abstract: The present invention relates to a radiation image converting panel that effectively prevents deterioration in fluorescence lifetime by a simpler structure. The radiation image converting panel comprises a support body, and a radiation converting film formed on the support body. The radiation converting film is formed on a film forming region which exists within a first main surface of the support body and includes at least a gravity center position of the first main surface. The radiation converting film is doped with Eu, and an Eu concentration distribution has a concentration gradient so as to become higher in the periphery than in the vicinity of the center of the radiation convert film. By thus providing a concentration gradient for the concentration of Eu to be doped, a drop in luminance in the periphery of the radiation converting film can be reduced.Type: GrantFiled: December 10, 2008Date of Patent: October 27, 2009Assignee: Hamamatsu Photonics K.K.Inventors: Jun Sakurai, Ichinobu Shimizu, Gouji Kamimura
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Publication number: 20090261273Abstract: The present invention relates a radiation image converting panel with a structure capable of arbitrarily controlling a change in luminance distribution of an entire panel surface after formation of a moisture-resistant protective film. The radiation image converting panel comprises a radiation converting film doped with Eu and covered with a moisture-resistant protective film. The Eu concentration in the radiation converting film is preliminarily adjusted such that the Eu concentration at a central portion or peripheral portion of the film falls within an optimal range, and the other film portion is provided with a positive or negative concentration gradient such that the Eu concentration thereof gradually become higher or lower than the optimal range. The luminance distribution of the entire panel in which the moisture-resistant protective film has been formed can be controlled by providing the Eu concentration to be added with a concentration gradient.Type: ApplicationFiled: December 11, 2008Publication date: October 22, 2009Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Jun Sakurai, Ichinobu Shimizu, Gouji Kamimura
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Publication number: 20090261274Abstract: The present invention relates to a radiation image converting panel with a structure to realize an improvement in moisture resistance in the periphery of the panel. The radiation image converting panel comprises a support body and a radiation converting film formed on the support body. The radiation converting film is formed on a film forming region which exists within a first main surface of the support body and includes at least a gravity center position of the first main surface. An average crystal diameter of columnar crystals located on a peripheral measuring area of the film forming region is controlled to be 1.3 times or more larger than an average crystal diameter of columnar crystals located on a central measuring area corresponding to a gravity center position of the film forming region, whereby moisture resistance in the periphery of the panel is improved, so that a sufficient fluorescence lifetime of the panel as a whole is maintained.Type: ApplicationFiled: January 8, 2009Publication date: October 22, 2009Applicant: HAMAMATSU PHOTONICS K.KInventors: Jun SAKURAI, Ichinobu Shimizu, Gouji Kamimura
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Publication number: 20090261272Abstract: The present invention relates to a radiation image converting panel that effectively prevents deterioration in fluorescence lifetime by a simpler structure. The radiation image converting panel comprises a support body, and a radiation converting film formed on the support body. The radiation converting film is formed on a film forming region which exists within a first main surface of the support body and includes at least a gravity center position of the first main surface. The radiation converting film is doped with Eu, and an Eu concentration distribution has a concentration gradient so as to become higher in the periphery than in the vicinity of the center of the radiation convert film. By thus providing a concentration gradient for the concentration of Eu to be doped, a drop in luminance in the periphery of the radiation converting film can be reduced.Type: ApplicationFiled: December 10, 2008Publication date: October 22, 2009Applicant: HAMAMATSU PHOTONICS K.KInventors: Jun SAKURAI, Ichinobu Shimizu, Gouji Kamimura
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Publication number: 20090261254Abstract: The present invention relates to a radiation image converting panel with a structure capable of arbitrarily controlling the luminance distribution of the panel surface after formation of a protective film according to usage conditions. The radiation image converting panel comprises a support body and a radiation converting film formed on the support body. The radiation converting film is formed on a film forming region which existes within a first main surface of the support body and includes at least a gravity center position of the first main surface. The film thickness of the radiation converting film is adjusted such that the maximum difference can be obtained in either one of a peripheral area and a middle area from a central area including the gravity center position.Type: ApplicationFiled: January 8, 2009Publication date: October 22, 2009Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Jun SAKURAI, Ichinobu Shimizu, Gouji Kamimura
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Publication number: 20080311484Abstract: The radiation image conversion panel in accordance with the present invention has an aluminum substrate, an alumite layer formed on a surface of the aluminum substrate, an intermediate film covering the alumite layer and having a radiation transparency and a light transparency, and a converting part provided on the intermediate film and adapted to convert a radiation image.Type: ApplicationFiled: June 15, 2007Publication date: December 18, 2008Inventors: Jun Sakurai, Ichinobu Shimizu, Gouji Kamimura, Takaharu Suzuki, Yutaka Kusuyama, Kazuhiro Shirakawa
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Patent number: D806249Type: GrantFiled: June 15, 2015Date of Patent: December 26, 2017Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Jun Sakurai, Katsuhiko Suzuki, Ichinobu Shimizu, Gouji Kamimura
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Patent number: D852958Type: GrantFiled: April 17, 2017Date of Patent: July 2, 2019Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Jun Sakurai, Katsuhiko Suzuki, Ichinobu Shimizu, Gouji Kamimura