Patents by Inventor Toshiharu Sumiya
Toshiharu Sumiya 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: 20230204522Abstract: A radiation imaging apparatus includes a detection unit configured to detect radiation emitted from a radiation irradiation unit, the apparatus comprises a processing unit configured to obtain dose distribution information regarding the radiation with which the detection unit is irradiated from the radiation irradiation unit. The processing unit corrects, using the dose distribution information, an image signal output from the detection unit.Type: ApplicationFiled: November 3, 2022Publication date: June 29, 2023Inventors: Takashi Takasaki, Toshiharu Sumiya, Akiya Nakayama, Ritsuya Tomita
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Patent number: 10660515Abstract: A method of providing diagnosis information includes acquiring, from a first imaging area of an eye to be inspected, a first set of signals to create three-dimensional tomographic data, acquiring, from a second imaging area including at least a part of the first imaging area, a second set of signals to create three-dimensional motion contrast data, generating a first display image of the eye to be inspected using the first set of signals, generating a second display image using the second set of signals, and changing, when the first display image and the second display image are displayed side by side, at least one of display magnifications, lateral display positions of the eye to be inspected, a display range in the depth direction of the eye to be inspected, and viewpoints for a three-dimensional display, for the first display image and the second display image correspondingly.Type: GrantFiled: September 11, 2018Date of Patent: May 26, 2020Assignee: Canon Kabushiki KaishaInventor: Toshiharu Sumiya
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Patent number: 10478059Abstract: An SS-OCT apparatus includes a clock generator configured as an interferometer including an optical path through which part of light emitted from a light source passes, the optical path being split into a first optical path and a second optical path having an optical path length difference relative to the first optical path, to generate a clock used by a converter sampling an analog signal; a tomographic image obtaining unit configured to obtain a tomographic image of a fundus by using a digital signal converted from the analog signal sampled by the converter using the generated clock; and a scan unit configured to scan illumination light across the fundus at a scan angle of 47 degrees or more in air. The tomographic image obtaining unit is configured to obtain a tomographic image of the fundus at a distance of 4.0 mm more within an eyeball in a depth range.Type: GrantFiled: March 30, 2016Date of Patent: November 19, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Taro Fukasawa, Toshiharu Sumiya
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Patent number: 10349829Abstract: An ophthalmic imaging apparatus that captures a tomographic image of an subject's eye based on light obtained by combining a return light with a reference light, the return light being from the subject's eye when irradiated with a measurement light, the reference light corresponding to the measurement light includes a first optical fiber disposed in an optical path of the reference light and including a light guide portion for guiding the reference light, and a second optical fiber disposed in an optical path of the measurement light and including a light guide portion for guiding the measurement light, wherein a diameter of each of the light guide portions of ejection ends of the first optical fiber and the second optical fiber is larger than a diameter of a light guide portion in a position different from a position of each of the ejection ends.Type: GrantFiled: March 31, 2017Date of Patent: July 16, 2019Assignee: Canon Kabushiki KaishaInventors: Toshiharu Sumiya, Yasuhisa Inao
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Publication number: 20190008377Abstract: A method of providing diagnosis information includes acquiring, from a first imaging area of an eye to be inspected, a first set of signals to create three-dimensional tomographic data, acquiring, from a second imaging area including at least a part of the first imaging area, a second set of signals to create three-dimensional motion contrast data, generating a first display image of the eye to be inspected using the first set of signals, generating a second display image using the second set of signals, and changing, when the first display image and the second display image are displayed side by side, at least one of display magnifications, lateral display positions of the eye to be inspected, a display range in the depth direction of the eye to be inspected, and viewpoints for a three-dimensional display, for the first display image and the second display image correspondingly.Type: ApplicationFiled: September 11, 2018Publication date: January 10, 2019Inventor: Toshiharu Sumiya
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Patent number: 10136806Abstract: An image display method includes acquiring a first image of a fundus within a first area of an eye to be inspected, acquiring interference signal sets corresponding to a plurality of frames, which are acquired with an intention to acquire the same cross section, for a plurality of different cross sections, generating, based on the interference signal sets corresponding to the plurality of frames, a motion contrast image of the fundus within a second area included in the first area, and superimposing, for display, information acquired from a portion of the motion contrast image of the fundus onto a corresponding position of the first image of the fundus.Type: GrantFiled: January 18, 2017Date of Patent: November 27, 2018Assignee: Canon Kabushiki KaishaInventor: Toshiharu Sumiya
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Patent number: 10126112Abstract: An object is to enable removal fixed pattern noise even if the intensity of interference light changes during measurement. An image capturing apparatus comprises a light splitting unit that splits light emitted from a light source into reference light and measurement light, an interference signal detection unit that acquires an interference signal from interference light resulting from interference of the reference light and return light generated by irradiating an object to be inspected with the measurement light, a noise signal acquisition unit that acquires a noise signal containing a noise component contained in the interference light, a correction unit that corrects the intensity of one of the interference signal and the noise signal, and a noise removal unit that removes the noise component contained in the interference signal using the interference signal and the noise signal one of which is corrected.Type: GrantFiled: September 30, 2015Date of Patent: November 13, 2018Assignee: CANON KABUSHIKI KAISHAInventors: Toshiharu Sumiya, Makoto Fukuhara, Makoto Sato
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Publication number: 20180310818Abstract: An image processing apparatus that processes a plurality of tomographic signals corresponding to light of mutually different polarization, acquired from an object using light interference, extracts candidate regions for depolarization regions of the object in a retardation image of the object, based on retardation values of the object obtained using the plurality of tomographic signals, and extracts depolarization regions of the object in an image indicating uniformity of polarized light in candidate regions, based on a value indicating uniformity of polarized light of the candidate regions, obtained using the plurality of tomographic signals of the candidate regions.Type: ApplicationFiled: October 12, 2016Publication date: November 1, 2018Inventors: Makoto Fukuhara, Toshiharu Sumiya
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Publication number: 20180232914Abstract: An image processing apparatus includes an image generating unit configured to generate a polarization sensitive tomographic image indicating polarization characteristics of an object based on tomographic signals acquired from the object using light interference, an extracting unit configured to extract a depolarization region of the object, based on the tomographic signals, and a display control unit configured to display, on a display unit, a region on the polarization sensitive tomographic image corresponding to the depolarization region, in a state distinguishable from other regions.Type: ApplicationFiled: October 12, 2016Publication date: August 16, 2018Inventors: Toshiharu Sumiya, Makoto Fukuhara
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Publication number: 20180140183Abstract: An SS-OCT apparatus includes a clock generator configured as an interferometer including an optical path through which part of light emitted from a light source passes, the optical path being split into a first optical path and a second optical path having an optical path length difference relative to the first optical path, to generate a clock used by a converter sampling an analog signal; a tomographic image obtaining unit configured to obtain a tomographic image of a fundus by using a digital signal converted from the analog signal sampled by the converter using the generated clock; and a scan unit configured to scan illumination light across the fundus at a scan angle of 47 degrees or more in air. The tomographic image obtaining unit is configured to obtain a tomographic image of the fundus at a distance of 4.0 mm more within an eyeball in a depth range.Type: ApplicationFiled: March 30, 2016Publication date: May 24, 2018Inventors: Taro Fukasawa, Toshiharu Sumiya
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Publication number: 20180000341Abstract: A alteration caused in a nerve fiber layer could not accurately be displayed. There is provided a tomographic imaging apparatus including a generation means for generating a nerve fiber bundle map, a designation means for designating an arbitrary nerve fiber bundle in the nerve fiber bundle map, and a display control means for causing display means to display a parameter of the designated nerve fiber bundle.Type: ApplicationFiled: December 15, 2015Publication date: January 4, 2018Inventors: Nobuhiro Tomatsu, Yoshihiko Iwase, Makoto Sato, Toshiharu Sumiya, Makoto Fukuhara, Atsushi Goto, Mitsuro Sugita, Michael Pircher, Clemens Vass, Christoph Hitzenberger
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Publication number: 20180003479Abstract: The present invention relates to accurately determining a contour of a depolarizing region. An image processing apparatus extracts a depolarizing region in a polarization-sensitive tomographic image of a subject's eye, and detects, in a tomographic intensity image of the subject's eye, a region corresponding to the extracted depolarizing region.Type: ApplicationFiled: December 22, 2015Publication date: January 4, 2018Inventors: Nobuhiro Tomatsu, Toshiharu Sumiya, Makoto Sato, Yoshihiko Iwase, Isao Komine
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Patent number: 9841268Abstract: An imaging apparatus configured to image an object to be examined is provided. The apparatus includes a splitting unit configured to split light obtained by combining the returned light and the reference light into a plurality of lights having different polarization components; and a detecting unit configured to detect the plurality of lights. The apparatus further includes a correcting unit configured to correct a phase difference between different polarization components generated by an optical member provided on an optical path of the measurement light or an optical path of the reference light.Type: GrantFiled: June 17, 2015Date of Patent: December 12, 2017Assignee: Canon Kabushiki KaishaInventors: Makoto Fukuhara, Nobuhiro Tomatsu, Toshiharu Sumiya, Makoto Sato
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Publication number: 20170311795Abstract: An ophthalmic imaging apparatus that captures a tomographic image of an subject's eye based on light obtained by combining a return light with a reference light, the return light being from the subject's eye when irradiated with a measurement light, the reference light corresponding to the measurement light includes a first optical fiber disposed in an optical path of the reference light and including a light guide portion for guiding the reference light, and a second optical fiber disposed in an optical path of the measurement light and including a light guide portion for guiding the measurement light, wherein a diameter of each of the light guide portions of ejection ends of the first optical fiber and the second optical fiber is larger than a diameter of a light guide portion in a position different from a position of each of the ejection ends.Type: ApplicationFiled: March 31, 2017Publication date: November 2, 2017Inventors: Toshiharu Sumiya, Yasuhisa Inao
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Publication number: 20170209037Abstract: To facilitate understanding of correspondence between a motion contrast image acquired through OCTA and structure information acquired through OCT or the like, when an image is displayed, a first image within a first area of an object to be inspected is acquired, and interference signal sets corresponding to a plurality of frames, which are acquired with an intention to acquire the same cross section, are acquired for a plurality of different cross sections. Then, a motion contrast image within a second area included in the first area is generated based on the interference signal sets corresponding to the plurality of frames, and information acquired from a part of the motion contrast image is superimposed for display onto a corresponding position of the first image.Type: ApplicationFiled: January 18, 2017Publication date: July 27, 2017Inventor: Toshiharu Sumiya
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Publication number: 20170074638Abstract: A polarization-sensitive OCT apparatus includes an interference unit configured to split light emitted from a light source into measurement light and reference light and to generate interfered light by causing returning light of the measurement light that has irradiated a subject to interfere with the reference light that has traveled through a reference arm, a splitting unit configured to split the interfered light into different polarization components, a generation unit configured to detect the polarization components split by the splitting unit and to generate a signal, detection units configured to detect respective polarization states of the measurement light in a sample arm, the returning light of the measurement light that has passed through the interference unit, and the reference light that has passed through the interference unit, and polarization control units configured to control the respective polarization states on the basis of the respective polarization states that have been detected.Type: ApplicationFiled: February 10, 2015Publication date: March 16, 2017Applicant: CANON KABUSHIKI KAISHAInventors: Makoto Fukuhara, Makoto Sato, Nobuhiro Tomatsu, Toshiharu Sumiya
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Publication number: 20160097632Abstract: An object is to enable removal fixed pattern noise even if the intensity of interference light changes during measurement. An image capturing apparatus comprises a light splitting unit that splits light emitted from a light source into reference light and measurement light, an interference signal detection unit that acquires an interference signal from interference light resulting from interference of the reference light and return light generated by irradiating an object to be inspected with the measurement light, a noise signal acquisition unit that acquires a noise signal containing a noise component contained in the interference light, a correction unit that corrects the intensity of one of the interference signal and the noise signal, and a noise removal unit that removes the noise component contained in the interference signal using the interference signal and the noise signal one of which is corrected.Type: ApplicationFiled: September 30, 2015Publication date: April 7, 2016Inventors: Toshiharu Sumiya, Makoto Fukuhara, Makoto Sato
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Publication number: 20150369586Abstract: An imaging apparatus configured to image an object to be examined is provided. The apparatus includes a splitting unit configured to split light obtained by combining the returned light and the reference light into a plurality of lights having different polarization components; and a detecting unit configured to detect the plurality of lights. The apparatus further includes a correcting unit configured to correct a phase difference between different polarization components generated by an optical member provided on an optical path of the measurement light or an optical path of the reference light.Type: ApplicationFiled: June 17, 2015Publication date: December 24, 2015Inventors: Makoto Fukuhara, Nobuhiro Tomatsu, Toshiharu Sumiya, Makoto Sato
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Patent number: 8378937Abstract: In an image display apparatus, each sub-pixel includes a phosphor configured to emit light of a predetermined color when the phosphor is irradiated with electrons, an electron emission device configured to irradiate the phosphor with the electrons, and a resistor connected in series to the electron emission device and having a negative temperature characteristic of resistance. In three or more sub-pixels with different luminescent colors included in each pixel, the resistor is configured such that a sub-pixel having a phosphor with a smaller temperature dependency of luminescent brightness has a resistor with a greater activation energy, or the resistor is configured such that the resistor is made of the same material for the three or more sub-pixel and such that a sub-pixel having a phosphor with a smaller temperature dependency of luminescent brightness has a resistor with a greater resistance.Type: GrantFiled: November 17, 2009Date of Patent: February 19, 2013Assignee: Canon Kabushiki KaishaInventors: Jun Iba, Toshiharu Sumiya, Hisanobu Azuma
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Patent number: 8084932Abstract: Deformation of a gate by Coulomb force generated when operating an electron-emitting device is inhibited by appropriately maintaining relationship between film thickness h of the gate and distance L from an outer surface of an insulating member to an inner surface of a concave portion. According to this, in an electron beam apparatus provided with a laminate-type electron-emitting device, the deformation of the gate is prevented to reduce variation in electron emission characteristics, thereby preventing the element from being broken.Type: GrantFiled: April 29, 2010Date of Patent: December 27, 2011Assignee: Canon Kabushiki KaishaInventors: Takanori Suwa, Hisanobu Azuma, Toshiharu Sumiya