Patents by Inventor Masahiko Okunuki
Masahiko Okunuki 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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Publication number: 20110216884Abstract: An X-ray imaging apparatus is provided with a multi X-ray source and a collimator in which a plurality of slits for X-rays to pass through are two-dimensionally formed, the size and position of the slits being adjustable. A control unit, as a first control mode, controls the size and position of the slits to move an examination region in parallel, when an X-ray source is changed to a different X-ray source, such that the examination directions are parallel before and after the change. Also, the control unit, as a second control mode, controls the size and position of the slits to rotate the examination direction, when an X-ray source is changed to a different X-ray source, such that the center of the examination regions is the same before and after the change.Type: ApplicationFiled: November 9, 2009Publication date: September 8, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Osamu Tsujii, Makoto Sato, Masahiko Okunuki, Satoshi Shimizu, Takashi Ogura
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Patent number: 7991120Abstract: A multi X-ray generating apparatus which has a plurality of electron sources arranged two-dimensionally and targets arranged at positions opposite to the electron sources includes a multi electron source which includes a plurality of electron sources and outputs electrons from driven electron sources by selectively driving a plurality of electron sources in accordance with supplied driving signals, and a target unit which includes a plurality of targets which generate X-rays in accordance with irradiation of electrons output from the multi electron source and outputs X-rays with different radiation qualities in accordance with the generation locations of X-rays. The generation locations and radiation qualities of X-rays from the target unit are controlled by selectively driving the electron sources of the multi electron source.Type: GrantFiled: February 27, 2009Date of Patent: August 2, 2011Assignee: Canon Kabushiki KaishaInventors: Masahiko Okunuki, Osamu Tsujii, Satoshi Shimizu, Takashi Ogura
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Patent number: 7991114Abstract: An X-ray imaging apparatus includes a multi X-ray source which includes a plurality of X-ray focuses to generate X-rays by irradiating X-ray targets with electron beams, a detector which detects X-rays which have been emitted from the multi X-ray source and have reached a detection surface, and a moving mechanism for moving the multi X-ray source within a plane facing the detection surface. The X-ray imaging apparatus acquires a plurality of X-ray detection signals from the detector by causing the multi X-ray source to perform X-ray irradiation while shifting the positions of a plurality of X-ray focuses which the detector has relative to the detection surface by moving the multi X-ray source using the moving mechanism. The apparatus then generates an X-ray projection image based on the plurality of X-ray detection signals acquired by the detector.Type: GrantFiled: April 20, 2010Date of Patent: August 2, 2011Assignee: Canon Kabushiki KaishaInventors: Masahiko Okunuki, Makoto Sato, Osamu Tsujii, Takashi Ogura, Hisashi Namba
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Patent number: 7978816Abstract: A control apparatus for controlling a multi radiation generating apparatus having a plurality of radiation generating devices which irradiate a two-dimensional sensor with radiation sets the intensity of radiation with which the plurality of radiation generating devices irradiate the two-dimensional sensor based on information about a part or physique of a patient, which is input by an input device.Type: GrantFiled: November 7, 2007Date of Patent: July 12, 2011Assignee: Canon Kabushiki KaishaInventors: Tomohiko Matsuura, Masahiko Okunuki, Osamu Tsujii, Kazuhiro Matsumoto, Hiroyuki Shinbata, Yuichi Nishii
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Patent number: 7970100Abstract: A mammography apparatus includes a detector that detects X-rays transmitted through a breast, and an optically transparent or semitransparent pressing panel for pressing the breast. The apparatus further includes a near infrared ray source that provided between the X-ray source and the pressing panel and arranged in a two-dimensional shape in alignment with the pressing panel, and that is movable between a first position in close contact with the pressing panel and a second position outside an X-ray image capture region. Near infrared image capture is carried out using the near infrared ray source by causing the near infrared ray source to be in the first position, and the near infrared ray source is caused to retract to the second position when carrying out X-ray image capture using the X-ray source.Type: GrantFiled: October 9, 2009Date of Patent: June 28, 2011Assignee: Canon Kabushiki KaishaInventors: Osamu Tsujii, Masakazu Morishita, Masahiko Okunuki, Satoshi Shimizu
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Patent number: 7945015Abstract: An X-ray imaging apparatus includes a multi X-ray generating unit in which multiple X-ray foci are disposed in two-dimensional form at a predetermined pitch in a first direction, and a slit unit having multiple slit members each disposed opposite to its respective X-ray focus. Each slit member has multiple slits arranged in the first direction, and each of the slits forms a slice-formed X-ray beam whose lengthwise direction is a second direction that is different from the first direction. The two-dimensional detection unit detects the X-ray intensity of the formed X-ray beams at the detection surface. The X-ray imaging apparatus executes X-ray imaging at multiple positions while moving the multi X-ray generating unit and the slit unit in the first direction by the amount of the predetermined pitch, while keeping the relative positional relationship therebetween, and reconstructs an X-ray image based on the obtained X-ray intensity.Type: GrantFiled: March 2, 2009Date of Patent: May 17, 2011Assignee: Canon Kabushiki KaishaInventors: Osamu Tsujii, Keiji Tsuchiya, Masahiko Okunuki
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Publication number: 20110085641Abstract: A compact apparatus can form multi-X-ray beams with good controllability. Electron beams (e) emitted from electron emission elements (15) of a multi-electron beam generating unit (12) receive the lens effect of a lens electrode (19). The resultant electron beams are accelerated to the final potential level by portions of a transmission-type target portion (13) of an anode electrode (20). The multi-X-ray beams (x) generated by the transmission-type target portion (13) pass through an X-ray shielding plate (23) and X-ray extraction portions (24) in a vacuum chamber and are extracted from the X-ray extraction windows (27) of a wall portion (25) into the atmosphere.Type: ApplicationFiled: December 17, 2010Publication date: April 14, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Masahiko Okunuki, Osamu Tsujii, Takeo Tsukamoto
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Patent number: 7902637Abstract: A nano structure formed on the surface of a substrate containing Si and having a pattern of at least 2 ?m in depth, in which Ga or In is contained in the surface of the pattern, and the Ga or the In has a concentration distribution that an elemental composition ratio Ga/Si or In/Si of Si and Ga or In detected by an X-ray photoelectron spectroscopy is at least 0.4 atomic percent in the depth direction of the substrate, and the maximum value of the concentration is positioned within 50 nm of the surface of the pattern.Type: GrantFiled: April 25, 2008Date of Patent: March 8, 2011Assignee: Canon Kabushiki KaishaInventors: Taiko Motoi, Kenji Tamamori, Shinan Wang, Masahiko Okunuki, Haruhito Ono, Toshiaki Aiba, Nobuki Yoshimatsu
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Patent number: 7889844Abstract: A compact apparatus can form multi X-ray beams with good controllability. Electron beams (e) emitted from electron emission elements (15) of a multi electron beam generating unit (12) receive the lens effect of a lens electrode (19). The resultant electron beams are accelerated to the final potential level by portions of a transmission-type target portion (13) of an anode electrode (20). The multi X-ray beams (x) generated by the transmission-type target portion (13) pass through an X-ray shielding plate (23) and X-ray extraction portions (24) in a vacuum chamber and are extracted from the X-ray extraction windows (27) of a wall portion (25) into the atmosphere.Type: GrantFiled: September 3, 2010Date of Patent: February 15, 2011Assignee: Canon Kabushiki KaishaInventors: Masahiko Okunuki, Osamu Tsujii, Takeo Tsukamoto
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Publication number: 20110027998Abstract: A method of manufacturing a nano structure by etching, using a substrate containing Si. A focused Ga ion or In ion beam is irradiated on the surface of the substrate containing Si. The Ga ions or the In ions are injected while sputtering away the surface of the substrate so that a layer containing Ga or In is formed on the surface of the substrate. Dry etching by a gas containing fluorine (F) is performed with the layer containing the Ga or the In formed on the surface of the substrate taken as an etching mask, and the nano structure is formed having a pattern of at least 2 ?m tin in depth according to a predetermined line width.Type: ApplicationFiled: September 13, 2010Publication date: February 3, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Taiko Motoi, Kenji Tamamori, Shinan Wang, Masahiko Okunuki, Haruhito Ono, Toshiaki Aiba, Nobuki Yoshimatsu
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Patent number: 7873146Abstract: A compact apparatus can form multi X-ray beams with good controllability. Electron beams (e) emitted from electron emission elements (15) of a multi electron beam generating unit (12) receive the lens effect of a lens electrode (19). The resultant electron beams are accelerated to the final potential level by portions of a transmission-type target portion (13) of an anode electrode (20). The multi X-ray beams (x) generated by the transmission-type target portion (13) pass through an X-ray shielding plate (23) and X-ray extraction portions (24) in a vacuum chamber and are extracted from the X-ray extraction windows (27) of a wall portion (25) into the atmosphere.Type: GrantFiled: March 2, 2007Date of Patent: January 18, 2011Assignee: Canon Kabushiki KaishaInventors: Masahiko Okunuki, Osamu Tsujii, Takeo Tsukamoto
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Publication number: 20100329429Abstract: A compact apparatus can form multi X-ray beams with good controllability. Electron beams (e) emitted from electron emission elements (15) of a multi electron beam generating unit (12) receive the lens effect of a lens electrode (19). The resultant electron beams are accelerated to the final potential level by portions of a transmission-type target portion (13) of an anode electrode (20). The multi X-ray beams (x) generated by the transmission-type target portion (13) pass through an X-ray shielding plate (23) and X-ray extraction portions (24) in a vacuum chamber and are extracted from the X-ray extraction windows (27) of a wall portion (25) into the atmosphere.Type: ApplicationFiled: September 3, 2010Publication date: December 30, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Masahiko Okunuki, Osamu Tsujii, Takeo Tsukamoto
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Publication number: 20100310051Abstract: In an X-ray generator which includes an electron beam generating unit which has a plurality of electron emitters and generates an electron beam corresponding to driven electron emitters, and a target electrode which generates X-rays with the irradiation position of an electron beam generated by the electron beam generating unit being an X-ray focus, the X-ray focus shape formed by a set of X-ray focuses on the target electrode is controlled by individually controlling driving of the plurality of electron emitters.Type: ApplicationFiled: February 4, 2009Publication date: December 9, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Osamu Tsujii, Makoto Sato, Masahiko Okunuki, Satoshi Shimizu, Takashi Ogura
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Publication number: 20100266097Abstract: An X-ray imaging apparatus includes a multi X-ray source which includes a plurality of X-ray focuses to generate X-rays by irradiating X-ray targets with electron beams, a detector which detects X-rays which have been emitted from the multi X-ray source and have reached a detection surface, and a moving mechanism for moving the multi X-ray source within a plane facing the detection surface. The X-ray imaging apparatus acquires a plurality of X-ray detection signals from the detector by causing the multi X-ray source to perform X-ray irradiation while shifting the positions of a plurality of X-ray focuses which the detector has relative to the detection surface by moving the multi X-ray source using the moving mechanism. The apparatus then generates an X-ray projection image based on the plurality of X-ray detection signals acquired by the detector.Type: ApplicationFiled: April 20, 2010Publication date: October 21, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Masahiko Okunuki, Makoto Sato, Osamu Tsujii, Takashi Ogura, Hisashi Namba
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Patent number: 7727410Abstract: A process for forming a three-dimensional photonic crystal comprises the steps of providing a base material having a first face and a second face adjoining to each other at a first angle, forming a first mask on the first face, dry-etching the first face in a direction at a second angle to the first face to remove a portion of the base material not protected by the first mask, forming a second mask on the second face, and dry-etching the second face in a direction at a third angle to the second face to remove a portion of the base material not protected by the second mask.Type: GrantFiled: February 7, 2007Date of Patent: June 1, 2010Assignee: Canon Kabushiki KaishaInventors: Shinan Wang, Kenji Tamamori, Haruhito Ono, Masahiko Okunuki
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Publication number: 20100111250Abstract: A mammography apparatus includes a detector that detects X-rays transmitted through a breast, and an optically transparent or semitransparent pressing panel for pressing the breast. The apparatus further includes a near infrared ray source that provided between the X-ray source and the pressing panel and arranged in a two-dimensional shape in alignment with the pressing panel, and that is movable between a first position in close contact with the pressing panel and a second position outside an X-ray image capture region. Near infrared image capture is carried out using the near infrared ray source by causing the near infrared ray source to be in the first position, and the near infrared ray source is caused to retract to the second position when carrying out X-ray image capture using the X-ray source.Type: ApplicationFiled: October 9, 2009Publication date: May 6, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Osamu Tsujii, Masakazu Morishita, Masahiko Okunuki, Satoshi Shimizu
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Patent number: 7700390Abstract: A method for fabricating a three-dimensional photonic crystal comprises the steps of: forming a dielectric thin film; injecting ions selectively into the dielectric thin film by using a focus ion beam to form a mask on the dielectric thin film; forming a pattern by selectively removing an exposed part of the dielectric thin film at which the mask is not formed on the dielectric thin film; forming a sacrificial layer on the dielectric thin film having the pattern formed therein; and flattening the sacrificial layer formed on the dielectric thin film until the pattern comes to the surface.Type: GrantFiled: May 12, 2008Date of Patent: April 20, 2010Assignee: Canon Kabushiki KaishaInventors: Shinan Wang, Kenji Tamamori, Taiko Motoi, Masahiko Okunuki, Haruhito Ono, Toshiaki Aiba
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Publication number: 20100008465Abstract: A control apparatus for controlling a multi radiation generating apparatus having a plurality of radiation generating devices which irradiate a two-dimensional sensor with radiation sets the intensity of radiation with which the plurality of radiation generating devices irradiate the two-dimensional sensor based on information about a part or physique of a patient, which is input by an input device.Type: ApplicationFiled: November 7, 2007Publication date: January 14, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Tomohiko Matsuura, Masahiko Okunuki, Osamu Tsujii, Kazuhiro Matsumoto, Hiroyuki Shinbata, Yuichi Nishii
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Publication number: 20090315153Abstract: To provide a method of manufacturing a nano structure having a pattern of 2 ?m or more in depth formed on the surface of a substrate containing Si and a nano structure having a pattern of a high aspect and nano order. A nano structure having a pattern of 2 ?m or more in depth formed on the surface of a substrate containing Si, wherein the nano structure is configured to contain Ga or In on the surface of the pattern, and has the maximum value of the concentration of the Ga or the In positioned within 50 nm of the surface of the pattern in the depth direction of the substrate. Further, its manufacturing method is configured such that the surface of the substrate containing Si is irradiated with a focused Ga ion or In ion beam, and the Ga ions or the In ions are injected, while sputtering away the surface of the substrate, and a layer containing Ga or In is formed on the surface of the substrate, and with this layer taken as an etching mask, a dry etching is performed.Type: ApplicationFiled: April 25, 2008Publication date: December 24, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Taiko Motoi, Kenji Tamamori, Shinan Wang, Masahiko Okunuki, Haruhito Ono, Toshiaki Aiba, Nobuki Yoshimatsu
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Publication number: 20090316860Abstract: A compact apparatus can form multi X-ray beams with good controllability. Electron beams (e) emitted from electron emission elements (15) of a multi electron beam generating unit (12) receive the lens effect of a lens electrode (19). The resultant electron beams are accelerated to the final potential level by portions of a transmission-type target portion (13) of an anode electrode (20). The multi X-ray beams (x) generated by the transmission-type target portion (13) pass through an X-ray shielding plate (23) and X-ray extraction portions (24) in a vacuum chamber and are extracted from the X-ray extraction windows (27) of a wall portion (25) into the atmosphere.Type: ApplicationFiled: March 2, 2007Publication date: December 24, 2009Applicant: CANNON KABUSHIKI KAISHAInventors: Masahiko Okunuki, Osamu Tsujii, Takeo Tsukamoto