Patents by Inventor Hidenosuke Itoh
Hidenosuke Itoh 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: 9194825Abstract: An imaging apparatus includes a diffraction grating which diffracts electromagnetic waves from an electromagnetic wave source, a shield grating which shields a part of the electromagnetic waves diffracted by the diffraction grating, a detector which detects an intensity distribution of the electromagnetic waves through the shield grating, and an adjusting unit which adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the detection result by the detector, wherein the adjusting unit divides the intensity distribution detected by the detector into a plurality of regions and adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the intensity distributions of the plurality of regions.Type: GrantFiled: March 10, 2015Date of Patent: November 24, 2015Assignee: Canon Kabushiki KaishaInventors: Hidenosuke Itoh, Kentaro Nagai
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Publication number: 20150185169Abstract: An imaging apparatus includes a diffraction grating which diffracts electromagnetic waves from an electromagnetic wave source, a shield grating which shields a part of the electromagnetic waves diffracted by the diffraction grating, a detector which detects an intensity distribution of the electromagnetic waves through the shield grating, and an adjusting unit which adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the detection result by the detector, wherein the adjusting unit divides the intensity distribution detected by the detector into a plurality of regions and adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the intensity distributions of the plurality of regions.Type: ApplicationFiled: March 10, 2015Publication date: July 2, 2015Inventors: Hidenosuke Itoh, Kentaro Nagai
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Patent number: 9006656Abstract: An imaging apparatus includes a diffraction grating which diffracts electromagnetic waves from an electromagnetic wave source, a shield grating which shields a part of the electromagnetic waves diffracted by the diffraction grating, a detector which detects an intensity distribution of the electromagnetic waves through the shield grating, and an adjusting unit which adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the detection result by the detector, wherein the adjusting unit divides the intensity distribution detected by the detector into a plurality of regions and adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the intensity distributions of the plurality of regions.Type: GrantFiled: October 11, 2011Date of Patent: April 14, 2015Assignee: Canon Kabushiki KaishaInventors: Hidenosuke Itoh, Kentaro Nagai
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Patent number: 8831174Abstract: There is provided an X-ray imaging method for reducing unnecessary components caused by a transmittance distribution of an object and unevenness in irradiation by a light source and accurately calculating a differential phase at the time of X-ray imaging by SDG.Type: GrantFiled: January 31, 2011Date of Patent: September 9, 2014Assignee: Canon Kabushiki KaishaInventors: Naoki Kohara, Hidenosuke Itoh
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Patent number: 8718228Abstract: A phase grating used for X-ray phase imaging is provided, in which a pitch can be narrowed by using a diffraction grating with a low aspect ratio. A phase grating used for X-ray phase imaging, characterized in that the phase grating includes a first diffraction grating in which a first projection part whose thickness is formed so that an in-coming X-ray transmits with a phase ?-shifted, and a first aperture part with the same aperture width as a width of the first projection part are cyclically arranged, and a second diffraction grating in which a second projection part with the same width as a width of the first projection part, and a second aperture part with the same aperture width as the aperture width of the first aperture part are cyclically arranged, and the second diffraction grating is formed as displaced on the first diffraction grating.Type: GrantFiled: March 12, 2009Date of Patent: May 6, 2014Assignee: Canon Kabushiki KaishaInventors: Takashi Nakamura, Aya Imada, Hidenosuke Itoh
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Patent number: 8537966Abstract: An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.Type: GrantFiled: November 20, 2012Date of Patent: September 17, 2013Assignee: Canon Kabushiki KaishaInventors: Chidane Ouchi, Kentaro Nagai, Toru Den, Hidenosuke Itoh
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Publication number: 20130181130Abstract: An imaging apparatus includes a diffraction grating which diffracts electromagnetic waves from an electromagnetic wave source, a shield grating which shields a part of the electromagnetic waves diffracted by the diffraction grating, a detector which detects an intensity distribution of the electromagnetic waves through the shield grating, and an adjusting unit which adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the detection result by the detector, wherein the adjusting unit divides the intensity distribution detected by the detector into a plurality of regions and adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the intensity distributions of the plurality of regions.Type: ApplicationFiled: October 11, 2011Publication date: July 18, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Hidenosuke Itoh, Kentaro Nagai
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Patent number: 8340243Abstract: An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.Type: GrantFiled: July 26, 2011Date of Patent: December 25, 2012Assignee: Canon Kabushiki KaishaInventors: Chidane Ouchi, Kentaro Nagai, Toru Den, Hidenosuke Itoh
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Publication number: 20120281811Abstract: There is provided an X-ray imaging method for reducing unnecessary components caused by a transmittance distribution of an object and unevenness in irradiation by a light source and accurately calculating a differential phase at the time of X-ray imaging by SDG.Type: ApplicationFiled: January 31, 2011Publication date: November 8, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Naoki Kohara, Hidenosuke Itoh
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Patent number: 8243879Abstract: A source grating for X-rays and the like which can enhance spatial coherence and is used for X-ray phase contrast imaging is provided. The source grating for X-rays is disposed between an X-ray source and a test object and is used for X-ray phase contrast imaging. The source grating for X-rays includes a plurality of sub-gratings formed by periodically arranging projection parts each having a thickness shielding an X-ray at constant intervals. The plurality of sub-gratings are stacked in layers by being shifted.Type: GrantFiled: April 13, 2009Date of Patent: August 14, 2012Assignee: Canon Kabushiki KaishaInventors: Hidenosuke Itoh, Yoshikatsu Ichimura, Takashi Nakamura, Aya Imada
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Publication number: 20120152730Abstract: A glass composition for ultraviolet light is provided. The glass composition for ultraviolet light contains Lu, Al, and O in an amount of 99.99 weight % or more in total. The glass composition contains Lu in an amount of 24% or more and 33% or less in cation percent and Al in an amount of 67% or more and 76% or less in cation percent.Type: ApplicationFiled: February 23, 2012Publication date: June 21, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Taihei Mukaide, Tomohiro Watanabe, Hidenosuke Itoh
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Publication number: 20110280368Abstract: An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.Type: ApplicationFiled: July 26, 2011Publication date: November 17, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Chidane Ouchi, Kentaro Nagai, Toru Den, Hidenosuke Itoh
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Patent number: 8009797Abstract: An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.Type: GrantFiled: July 23, 2010Date of Patent: August 30, 2011Assignee: Canon Kabushiki KaishaInventors: Chidane Ouchi, Kentaro Nagai, Toru Den, Hidenosuke Itoh
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Publication number: 20110013743Abstract: A phase grating used for X-ray phase imaging is provided, in which a pitch can be narrowed by using a diffraction grating with a low aspect ratio. A phase grating used for X-ray phase imaging, characterized in that the phase grating includes a first diffraction grating in which a first projection part whose thickness is formed so that an in-coming X-ray transmits with a phase ?-shifted, and a first aperture part with the same aperture width as a width of the first projection part are cyclically arranged, and a second diffraction grating in which a second projection part with the same width as a width of the first projection part, and a second aperture part with the same aperture width as the aperture width of the first aperture part are cyclically arranged, and the second diffraction grating is formed as displaced on the first diffraction grating.Type: ApplicationFiled: March 12, 2009Publication date: January 20, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Nakamura, Aya Imada, Hidenosuke Itoh
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Publication number: 20100290590Abstract: An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.Type: ApplicationFiled: July 23, 2010Publication date: November 18, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Chidane Ouchi, Kentaro Nagai, Toru Den, Hidenosuke Itoh
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Publication number: 20100246764Abstract: A source grating for X-rays and the like which can enhance spatial coherence and is used for X-ray phase contrast imaging is provided. The source grating for X-rays is disposed between an X-ray source and a test object and is used for X-ray phase contrast imaging. The source grating for X-rays includes a plurality of sub-gratings formed by periodically arranging projection parts each having a thickness shielding an X-ray at constant intervals. The plurality of sub-gratings are stacked in layers by being shifted.Type: ApplicationFiled: April 13, 2009Publication date: September 30, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Hidenosuke Itoh, Yoshikatsu Ichimura, Takashi Nakamura, Aya Imada
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Patent number: 7727918Abstract: An optical glass that contains Si, Al, Mg, and O is provided. The optical glass contains Si in an amount of 40% or more and 60% or less, in cation percent, Al in an amount of 10% or more and 35% or less, in cation percent, and Mg in an amount of 20% or more and 35% or less, in cation percent. In the optical glass, the total amount of Si, Al, and Mg is 99.5% or more, in cation percent. Furthermore, the optical glass contains Fe and Na each in an amount of 0.01 wtppm or less and has a transmittance to a light having a wavelength of 248 nm of 40% or more at a thickness of 5 mm.Type: GrantFiled: October 31, 2007Date of Patent: June 1, 2010Assignee: Canon Kabushiki KaishaInventors: Tomohiro Watanabe, Taihei Mukaide, Hidenosuke Itoh
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Publication number: 20100096565Abstract: A glass composition for ultraviolet light is provided. The glass composition for ultraviolet light contains Lu, Al, and O in an amount of 99.99 weight % or more in total. The glass composition contains Lu in an amount of 24% or more and 33% or less in cation percent and Al in an amount of 67% or more and 76% or less in cation percent.Type: ApplicationFiled: November 20, 2007Publication date: April 22, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Taihei Mukaide, Tomohiro Watanabe, Hidenosuke Itoh
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Publication number: 20080131691Abstract: An optical glass that contains Si, Al, Mg, and O is provided. The optical glass contains Si in an amount of 40% or more and 60% or less, in cation percent, Al in an amount of 10% or more and 35% or less, in cation percent, and Mg in an amount of 20% or more and 35% or less, in cation percent. In the optical glass, the total amount of Si, Al, and Mg is 99.5% or more, in cation percent. Furthermore, the optical glass contains Fe and Na each in an amount of 0.01 wtppm or less and has a transmittance to a light having a wavelength of 248 nm of 40% or more at a thickness of 5 mm.Type: ApplicationFiled: October 31, 2007Publication date: June 5, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Tomohiro Watanabe, Taihei Mukaide, Hidenosuke Itoh
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Publication number: 20080132401Abstract: An optical glass containing Si, Al, Ca, and O is provided. The optical glass contains Si in an amount of 7% or more and 93% or less, in cation percent, Al in an amount of 2% or more and 57% or less, in cation percent, and Ca in an amount of 2% or more and 52% or less, in cation percent. In the optical glass, a total amount of Si, Al, and Ca is 99.5% or more, in cation percent. Further, the optical glass contains Fe and Na each in an amount of 0.01 wtppm or less and has a transmittance to a light having a wavelength of 248 nm of 15% or more at a thickness of 5 mm.Type: ApplicationFiled: December 27, 2006Publication date: June 5, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Tomohiro WATANABE, Taihei Mukaide, Hidenosuke Itoh