Patents by Inventor Shintaro Toyama
Shintaro Toyama 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: 10302776Abstract: A scintillator panel that converts radiation into scintillation light includes a substrate that includes a principal surface, a scintillator layer that is disposed on the principal surface, and a reflective layer that is disposed on the scintillator layer and reflects the scintillation light. The scintillator layer includes a plurality of scintillator portions which are arranged with a predetermined pitch on the principal surface. Each scintillator portion includes a side face that extends in a direction crossing the principal surface. The reflective layer includes a plurality of metal particles with a foil shape extending along the side faces and is disposed so as to cover the side faces.Type: GrantFiled: November 29, 2016Date of Patent: May 28, 2019Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Shintaro Toyama, Yutaka Kusuyama, Masanori Yamashita, Hirotake Osawa, Hidenori Jonishi
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Publication number: 20190041532Abstract: A scintillator panel that converts radiation into scintillation light includes a substrate that includes a principal surface, a scintillator layer that is disposed on the principal surface, and a reflective layer that is disposed on the scintillator layer and reflects the scintillation light. The scintillator layer includes a plurality of scintillator portions which are arranged with a predetermined pitch on the principal surface. Each scintillator portion includes a side face that extends in a direction crossing the principal surface. The reflective layer includes a plurality of metal particles with a foil shape extending along the side faces and is disposed so as to cover the side faces.Type: ApplicationFiled: November 29, 2016Publication date: February 7, 2019Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Shintaro TOYAMA, Yutaka KUSUYAMA, Masanori YAMASHITA, Hirotake OSAWA, Hidenori JONISHI
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Patent number: 9405020Abstract: Provided is a method of manufacturing a scintillator panel configured to convert radiation into scintillation light, the method including a first process of forming a plurality of convex sections that protrude from a rear surface toward a front surface of the substrate in a predetermined direction and concave section defined by the convex sections on the front surface of the substrate having the front surface and the rear surface, a second process of forming first scintillator units respectively extending from the convex sections of the substrate in the predetermined direction through crystal growth of a columnar crystal of a scintillator material, and a third process of radiating a laser beam to contact portions of the first scintillator units extending from the adjacent convex sections and separating the first scintillator units extending from the adjacent convex sections by scanning the concave section with the laser beam.Type: GrantFiled: November 5, 2013Date of Patent: August 2, 2016Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Masanori Yamashita, Yutaka Kusuyama, Shintaro Toyama, Hirotake Osawa, Katsuhiko Suzuki
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Patent number: 9322932Abstract: A scintillator panel for converting radiation into scintillation light, includes a substrate having a front surface and a back surface, a plurality of scintillator sections formed on the front surface of the substrate so as to be separate from one another, and having upper surfaces and side surfaces extending from the upper surfaces toward the front surface of the substrate, solvent permeation blocking film formed on the upper surfaces and the side surfaces of the scintillator sections so as to cover the upper surfaces and the side surfaces of the scintillator sections, and a light shielding layer formed on the solvent permeation blocking film, that is for shielding the scintillation light, and the scintillator section is composed of a plurality of columnar crystals of a scintillator material, the solvent permeation blocking film is formed so as not to fill gaps between the side surfaces of the adjacent scintillator sections.Type: GrantFiled: September 17, 2013Date of Patent: April 26, 2016Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Shintaro Toyama, Yutaka Kusuyama, Masanori Yamashita, Hirotake Osawa, Katsuhiko Suzuki
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Patent number: 9310494Abstract: A scintillator panel for converting radiation into scintillation light, the scintillator panel includes a substrate having a front surface and a back surface, and formed with a plurality of convex portions projecting from the front surface in a predetermined direction toward the front surface from the back surface and a concave portion defined by the convex portions, a plurality of first scintillator sections formed on the respective convex portions of the substrate, and a second scintillator section formed on the bottom surface of the concave portion of the substrate, and the first scintillator section has a first portion extending along the predetermined direction from an upper surface of the convex portion and a second portion extending along the predetermined direction from side surfaces of the convex portion so as to contact with the first portion, the first and second portions are composed of a plurality of columnar crystals of a scintillator material, the first scintillator sections are separated fromType: GrantFiled: September 17, 2013Date of Patent: April 12, 2016Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Shintaro Toyama, Yutaka Kusuyama, Masanori Yamashita, Hirotake Osawa, Katsuhiko Suzuki
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Publication number: 20150355342Abstract: Provided is a method of manufacturing a scintillator panel configured to convert radiation into scintillation light, the method including a first process of forming a plurality of convex sections that protrude from a rear surface toward a front surface of the substrate in a predetermined direction and concave section defined by the convex sections on the front surface of the substrate having the front surface and the rear surface, a second process of forming first scintillator units respectively extending from the convex sections of the substrate in the predetermined direction through crystal growth of a columnar crystal of a scintillator material, and a third process of radiating a laser beam to contact portions of the first scintillator units extending from the adjacent convex sections and separating the first scintillator units extending from the adjacent convex sections by scanning the concave section with the laser beam.Type: ApplicationFiled: November 5, 2013Publication date: December 10, 2015Inventors: Masanori YAMASHITA, Yutaka KUSUYAMA, Shintaro TOYAMA, Hirotake OSAWA, Katsuhiko SUZUKI
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Patent number: 9158010Abstract: Provided is a radiation detector 1 capable of improving reliability while using a plurality of light receiving elements to provide a large screen size. A radiation detector 1 includes: a flexible supporting substrate 5 that includes a radiation incident surface 5a and a radiation emission surface 5b; a scintillator layer 6 made from a plurality of columnar crystals H formed on the emission surface 5b through crystal growth and generating light due to the incident radiation; a moisture-proof protective layer 7 covering the scintillator layer 6 and filled between the plurality of columnar crystals H; and light receiving elements 8A to 8D arranged to oppose the scintillator layer 6 and detecting the light generated in the scintillator layer 6.Type: GrantFiled: June 17, 2011Date of Patent: October 13, 2015Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Hirotake Osawa, Yutaka Kusuyama, Shintaro Toyama, Masanori Yamashita, Munenori Shikida
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Patent number: 9146325Abstract: Provided is a radiation detector 1 capable of improving reliability associated with radiation detection. The radiation detector 1 includes: a supporting substrate 2 that can transmit radiation there-through; a scintillator layer 3 formed on one principal surface 2a of the supporting substrate 2, the scintillator layer 3 including an incident surface 3a on which radiation is incident and an emission surface 3b emitting light generated by the incident radiation and on a side opposite to the incident surface 3a; and a light detection portion 5 disposed on an emission surface side of the scintillator layer 3 for detecting light emitted from the emission surface 3b.Type: GrantFiled: October 17, 2014Date of Patent: September 29, 2015Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Hirotake Osawa, Yutaka Kusuyama, Shintaro Toyama, Masanori Yamashita, Munenori Shikida
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Patent number: 9136029Abstract: A scintillator panel 1 and a radiation image sensor 10 in which characteristics can be changed easily at the time of manufacture are provided. The scintillator panel 1 comprises a scintillator 3 having an entrance surface 3a for a radiation; a FOP 2, arranged on an opposite side of the scintillator 3 from the entrance surface 3a, for transmitting the light generated by the scintillator 3; and a resin layer 5, formed from a resin containing a color material on the entrance surface 3a side of the scintillator 3, for performing at least one of absorption and reflection of the light generated by the scintillator 3.Type: GrantFiled: May 16, 2011Date of Patent: September 15, 2015Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Shintaro Toyama, Yutaka Kusuyama, Masanori Yamashita, Hirotake Osawa, Munenori Shikida
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Publication number: 20150247935Abstract: A scintillator panel for converting radiation into scintillation light, the scintillator panel includes a substrate having a front surface and a back surface, and formed with a plurality of convex portions projecting from the front surface in a predetermined direction toward the front surface from the back surface and a concave portion defined by the convex portions, a plurality of first scintillator sections formed on the respective convex portions of the substrate, and a second scintillator section formed on the bottom surface of the concave portion of the substrate, and the first scintillator section has a first portion extending along the predetermined direction from an upper surface of the convex portion and a second portion extending along the predetermined direction from side surfaces of the convex portion so as to contact with the first portion, the first and second portions are composed of a plurality of columnar crystals of a scintillator material, the first scintillator sections are separated fromType: ApplicationFiled: September 17, 2013Publication date: September 3, 2015Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Shintaro Toyama, Yutaka Kusuyama, Masanori Yamashita, Hirotake Osawa, Katsuhiko Suzuki
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Publication number: 20150247934Abstract: A scintillator panel for converting radiation into scintillation light, includes a substrate having a front surface and a back surface, a plurality of scintillator sections formed on the front surface of the substrate so as to be separate from one another, and having upper surfaces and side surfaces extending from the upper surfaces toward the front surface of the substrate, solvent permeation blocking film formed on the upper surfaces and the side surfaces of the scintillator sections so as to cover the upper surfaces and the side surfaces of the scintillator sections, and a light shielding layer formed on the solvent permeation blocking film, that is for shielding the scintillation light, and the scintillator section is composed of a plurality of columnar crystals of a scintillator material, the solvent permeation blocking film is formed so as not to fill gaps between the side surfaces of the scintillator sections adjacent to one another, and the light shielding layer is formed on the solvent permeation bloType: ApplicationFiled: September 17, 2013Publication date: September 3, 2015Inventors: Shintaro Toyama, Yutaka Kusuyama, Masanori Yamashita, Hirotake Osawa, Katsuhiko Suzuki
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Publication number: 20150059151Abstract: Provided is a radiation detector 1 capable of improving reliability associated with radiation detection. The radiation detector 1 includes: a supporting substrate 2 that can transmit radiation there-through; a scintillator layer 3 formed on one principal surface 2a of the supporting substrate 2, the scintillator layer 3 including an incident surface 3a on which radiation is incident and an emission surface 3b emitting light generated by the incident radiation and on a side opposite to the incident surface 3a; and a light detection portion 5 disposed on an emission surface side of the scintillator layer 3 for detecting light emitted from the emission surface 3b.Type: ApplicationFiled: October 17, 2014Publication date: March 5, 2015Inventors: Hirotake OSAWA, Yutaka Kusuyama, Shintaro Toyama, Masanori Yamashita, Munenori Shikida
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Patent number: 8890078Abstract: Provided is a radiation detector 1 capable of improving reliability associated with radiation detection. The radiation detector 1 includes: a supporting substrate 2 that can transmit radiation there-through; a scintillator layer 3 formed on one principal surface 2a of the supporting substrate 2, the scintillator layer 3 including an incident surface 3a on which radiation is incident and an emission surface 3b emitting light generated by the incident radiation and on a side opposite to the incident surface 3a; and a light detection portion 5 disposed on an emission surface side of the scintillator layer 3 for detecting light emitted from the emission surface 3b.Type: GrantFiled: June 17, 2011Date of Patent: November 18, 2014Assignee: Hamamatsu Photonics K.K.Inventors: Hirotake Osawa, Yutaka Kusuyama, Shintaro Toyama, Masanori Yamashita, Munenori Shikida
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Patent number: 8866088Abstract: A radiation image conversion panel which can improve its optical output and resolution is provided. A radiation image conversion panel 1 comprises a FOP 2, a heat-resistant resin layer 3 formed on a main face 2a of the FOP 2, and a scintillator 4 formed by vapor deposition on a main face 3a of the heat-resistant layer 3 on a side opposite from the FOP 2 and made of a columnar crystal. In this radiation image conversion panel 1, the main face 3a of the heat-resistant resin layer 3 has a surface energy of at least 20 [mN/m] but less than 35 [mN/m]. This can make the crystallinity of the root part of the scintillator 4 favorable, so as to inhibit the root part of the scintillator 4 from becoming harder to transmit and easier to scatter the output light.Type: GrantFiled: January 13, 2011Date of Patent: October 21, 2014Assignee: Hamamatsu Photonics K.K.Inventors: Hirotake Osawa, Shintaro Toyama, Yutaka Kusuyama, Masanori Yamashita, Munenori Shikida
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Patent number: 8637830Abstract: In a radiation image conversion panel (10), a radiation conversion layer (2) for converting an incident radiation into light is formed on a substrate (1). The radiation conversion layer (2) has a reflective layer (3), on a side opposite from a light exit surface (2a) for emitting the light, for reflecting the light to the exit surface (2a) side, while the reflective layer (3) has a helical structure comprising helically stacked phosphor crystals. Thus constructed radiation image conversion panel (10) can enhance the reflectance without forming a reflective layer made of a thin metal film or the like and exhibit a reflectance higher than that in the case where the reflective layer is formed by spherical crystal particles.Type: GrantFiled: March 10, 2010Date of Patent: January 28, 2014Assignee: Hamamatsu Photonics K.K.Inventors: Masanori Yamashita, Yutaka Kusuyama, Shintaro Toyama, Kazuhiro Shirakawa, Munenori Shikida
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Publication number: 20130112882Abstract: Provided is a radiation detector 1 capable of improving reliability associated with radiation detection. The radiation detector 1 includes: a supporting substrate 2 that can transmit radiation there-through; a scintillator layer 3 formed on one principal surface 2a of the supporting substrate 2, the scintillator layer 3 including an incident surface 3a on which radiation is incident and an emission surface 3b emitting light generated by the incident radiation and on a side opposite to the incident surface 3a; and a light detection portion 5 disposed on an emission surface side of the scintillator layer 3 for detecting light emitted from the emission surface 3b.Type: ApplicationFiled: June 17, 2011Publication date: May 9, 2013Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Hirotake Osawa, Yutaka Kusuyama, Shintaro Toyama, Masanori Yamashita, Munenori Shikida
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Publication number: 20130112884Abstract: Provided is a radiation detector 1 capable of improving reliability while using a plurality of light receiving elements to provide a large screen size. A radiation detector 1 includes: a flexible supporting substrate 5 that includes a radiation incident surface 5a and a radiation emission surface 5b; a scintillator layer 6 made from a plurality of columnar crystals H formed on the emission surface 5b through crystal growth and generating light due to the incident radiation; a moisture-proof protective layer 7 covering the scintillator layer 6 and filled between the plurality of columnar crystals H; and light receiving elements 8A to 8D arranged to oppose the scintillator layer 6 and detecting the light generated in the scintillator layer 6.Type: ApplicationFiled: June 17, 2011Publication date: May 9, 2013Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Hirotake Osawa, Yutaka Kusuyama, Shintaro Toyama, Masanori Yamashita, Munenori Shikida
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Publication number: 20130087713Abstract: A scintillator panel 1 and a radiation image sensor 10 which can achieve higher resolution and higher luminance are provided. The scintillator panel 1 comprises a radiation transmitting substrate 3, adapted to transmit a radiation therethrough, having entrance and exit surfaces 3a, 3b for the radiation; a scintillator 4, adapted to generate light in response to the radiation incident thereon, comprising a plurality of columnar bodies grown as crystals on the exit surface 3b; an FOP 6, arranged on an opposite side of the scintillator 4 from the exit surface 3b, for propagating the light generated by the scintillator 4; and a double-sided tape 5, disposed between the scintillator 4 and the FOP 6, for adhesively bonding the scintillator 4 and the FOP 6 together and transmitting therethrough the light generated by the scintillator 4.Type: ApplicationFiled: May 16, 2011Publication date: April 11, 2013Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Shintaro Toyama, Yutaka Kusuyama, Masanori Yamashita, Hirotake Osawa, Munenori Shikida
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Publication number: 20130043397Abstract: A scintillator panel 1 and a radiation image sensor 10 in which characteristics can be changed easily at the time of manufacture are provided. The scintillator panel 1 comprises a scintillator 3 having an entrance surface 3a for a radiation; a FOP 2, arranged on an opposite side of the scintillator 3 from the entrance surface 3a, for transmitting the light generated by the scintillator 3; and a resin layer 5, formed from a resin containing a color material on the entrance surface 3a side of the scintillator 3, for performing at least one of absorption and reflection of the light generated by the scintillator 3.Type: ApplicationFiled: May 16, 2011Publication date: February 21, 2013Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Shintaro Toyama, Yutaka Kusuyama, Masanori Yamashita, Hirotake Osawa, Munenori Shikida
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Publication number: 20120312998Abstract: A radiation image conversion panel which can improve its optical output and resolution is provided. A radiation image conversion panel 1 comprises a FOP 2, a heat-resistant resin layer 3 formed on a main face 2a of the FOP 2, and a scintillator 4 formed by vapor deposition on a main face 3a of the heat-resistant layer 3 on a side opposite from the FOP 2 and made of a columnar crystal. In this radiation image conversion panel 1, the main face 3a of the heat-resistant resin layer 3 has a surface energy of at least 20 [mN/m] but less than 35 [mN/m]. This can make the crystallinity of the root part of the scintillator 4 favorable, so as to inhibit the root part of the scintillator 4 from becoming harder to transmit and easier to scatter the output light.Type: ApplicationFiled: January 13, 2011Publication date: December 13, 2012Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Hirotake Osawa, Shintaro Toyama, Yutaka Kusuyama, Masanori Yamashita, Munenori Shikida