Patents by Inventor Nobutaka Mizuno
Nobutaka Mizuno 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: 11968446Abstract: An apparatus comprising a sensor capable of generating a signal pair used in focus detection. The apparatus obtains, based on a defocus amount obtained using the signal pair, a focus distance of a lens unit that is mounted to the apparatus and adjusts a focus distance of the lens unit based on the obtained focus distance. When the lens unit is a multi-scopic lens unit having a plurality of optical systems having different axes, the apparatus obtains the focus distance using an adjustment value obtained based on an axis position that is a position on the sensor through which an axis of the multi-scopic lens unit passes.Type: GrantFiled: May 30, 2023Date of Patent: April 23, 2024Assignee: CANON KABUSHIKI KAISHAInventors: Yumi Takao, Nobutaka Mizuno, Junichi Imamiya
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Publication number: 20240089424Abstract: An electronic apparatus includes a processor, and a memory storing a program which, when executed by the processor, causes the electronic apparatus to acquire a first image which is captured via a first optical system, and a second image which is captured via a second optical system, and which corresponds to the first image, and generate, by using the first image and the second image, a third image, and a fourth image which has parallax with respect to the third image and of which partial region included in the third image is magnified.Type: ApplicationFiled: September 7, 2023Publication date: March 14, 2024Inventor: Nobutaka MIZUNO
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Patent number: 11924548Abstract: An apparatus comprising a sensor capable of generating a signal pair used in focus detection. The apparatus obtains, based on a defocus amount obtained using the signal pair, a focus distance of a lens unit that is mounted to the apparatus and adjusts a focus distance of the lens unit based on the obtained focus distance. When the lens unit is a multi-scopic lens unit having a plurality of optical systems having different axes, the apparatus obtains the focus distance using an adjustment value obtained based on an axis position that is a position on the sensor through which an axis of the multi-scopic lens unit passes.Type: GrantFiled: June 8, 2022Date of Patent: March 5, 2024Assignee: CANON KABUSHIKI KAISHAInventors: Yumi Takao, Nobutaka Mizuno, Junichi Imamiya
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Publication number: 20230300461Abstract: An apparatus comprising a sensor capable of generating a signal pair used in focus detection. The apparatus obtains, based on a defocus amount obtained using the signal pair, a focus distance of a lens unit that is mounted to the apparatus and adjusts a focus distance of the lens unit based on the obtained focus distance. When the lens unit is a multi-scopic lens unit having a plurality of optical systems having different axes, the apparatus obtains the focus distance using an adjustment value obtained based on an axis position that is a position on the sensor through which an axis of the multi-scopic lens unit passes.Type: ApplicationFiled: May 30, 2023Publication date: September 21, 2023Inventors: Yumi Takao, Nobutaka Mizuno, Junichi Imamiya
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Publication number: 20230300462Abstract: An apparatus comprising a sensor capable of generating a signal pair used in focus detection. The apparatus obtains, based on a defocus amount obtained using the signal pair, a focus distance of a lens unit that is mounted to the apparatus and adjusts a focus distance of the lens unit based on the obtained focus distance. When the lens unit is a multi-scopic lens unit having a plurality of optical systems having different axes, the apparatus obtains the focus distance using an adjustment value obtained based on an axis position that is a position on the sensor through which an axis of the multi-scopic lens unit passes.Type: ApplicationFiled: May 30, 2023Publication date: September 21, 2023Inventors: Yumi Takao, Nobutaka Mizuno, Junichi Imamiya
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Publication number: 20220400208Abstract: An apparatus comprising a sensor capable of generating a signal pair used in focus detection. The apparatus obtains, based on a defocus amount obtained using the signal pair, a focus distance of a lens unit that is mounted to the apparatus and adjusts a focus distance of the lens unit based on the obtained focus distance. When the lens unit is a multi-scopic lens unit having a plurality of optical systems having different axes, the apparatus obtains the focus distance using an adjustment value obtained based on an axis position that is a position on the sensor through which an axis of the multi-scopic lens unit passes.Type: ApplicationFiled: June 8, 2022Publication date: December 15, 2022Inventors: Yumi Takao, Nobutaka Mizuno, Junichi Imamiya
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Patent number: 11500266Abstract: A lens apparatus includes an imaging optical system, a storage unit configured to store aperture information about the imaging optical system, and a transmission unit configured to transmit the aperture information to an imaging apparatus, wherein the aperture information is determined based on a shape parameter representing a shape of an aperture which defines an outer edge of a light flux passing through the imaging optical system.Type: GrantFiled: June 25, 2019Date of Patent: November 15, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Yu Inagaki, Nobutaka Mizuno
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Publication number: 20220206368Abstract: A lens apparatus attachable to and detachable from a camera body includes a reflective optical system, a memory configured to store aperture information based on an optical condition of the lens apparatus, and a transmitter configured to transmit the aperture information acquired from the memory to the camera body.Type: ApplicationFiled: December 23, 2021Publication date: June 30, 2022Inventors: Hirotaro Kikuchi, Nobutaka Mizuno
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Publication number: 20220159191Abstract: An image pickup apparatus includes an image sensor including a pair of focus detection pixels configured to receive light beams that have passed through different areas in an exit pupil of an imaging optical system, and at least one processor caused to function as a focus detection unit configured to detect focus of the imaging optical system by using a pair of focus detection signals which is generated by using output signals from the pair of focus detection pixels. The focus detection unit can detect the focus in a plurality of spatial frequency bands. The focus detection unit acquires a focus detection result to be used in a spatial frequency band corresponding to an aberration amount of the imaging optical system, the spatial frequency band being included in the plurality of spatial frequency bands.Type: ApplicationFiled: November 16, 2021Publication date: May 19, 2022Inventors: Nobutaka Mizuno, Hirotaro Kikuchi, Yumi Takao
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Publication number: 20200004109Abstract: A lens apparatus includes an imaging optical system, a storage unit configured to store aperture information about the imaging optical system, and a transmission unit configured to transmit the aperture information to an imaging apparatus, wherein the aperture information is determined based on a shape parameter representing a shape of an aperture which defines an outer edge of a light flux passing through the imaging optical system.Type: ApplicationFiled: June 25, 2019Publication date: January 2, 2020Inventors: Yu Inagaki, Nobutaka Mizuno
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Patent number: 10455142Abstract: A focus detection apparatus comprising: an acquisition unit that acquires, for each color, a correction value for correcting a pair of focus detection signals of respective colors acquired from a color image sensor based on color sensitivity information unique to the color image sensor which includes a plurality of photoelectric conversion portions for each of a plurality of microlenses, and performing photoelectric conversion on light entering via an imaging optical system to output an electric signal; a correction unit that corrects each focus detection signal by using the correction value; a generation unit that processes the pair of corrected focus detection signals of the respective colors, and generates a pair of focus detection signals; and a focus detection unit that detects an evaluation value based on the pair of focus detection signals.Type: GrantFiled: March 17, 2017Date of Patent: October 22, 2019Assignee: Canon Kabushiki KaishaInventors: Yoshihito Tamaki, Nobutaka Mizuno
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Patent number: 10326926Abstract: A focus detection apparatus that performs phase difference focus detection based on signals of a plurality of colors obtained from an image sensor, which is covered by color filters of the plurality of colors, that performs photoelectric conversion on light incident on the image sensor via an imaging optical system and outputs electric signals, the apparatus comprising: an acquisition unit that acquires an addition coefficient indicating weights to be applied to the signals of the plurality of colors on the basis of characteristic of chromatic aberration of magnification of the imaging optical system; a generation unit that generates a pair of focus detection signals by performing weighted addition on the signals of the plurality of colors using the addition coefficient; and a detection unit that detects an image shift amount between the pair of focus detection signals.Type: GrantFiled: January 5, 2018Date of Patent: June 18, 2019Assignee: Canon Kabushiki KaishaInventor: Nobutaka Mizuno
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Publication number: 20180205873Abstract: A focus detection apparatus that performs phase difference focus detection based on signals of a plurality of colors obtained from an image sensor, which is covered by color filters of the plurality of colors, that performs photoelectric conversion on light incident on the image sensor via an imaging optical system and outputs electric signals, the apparatus comprising: an acquisition unit that acquires an addition coefficient indicating weights to be applied to the signals of the plurality of colors on the basis of characteristic of chromatic aberration of magnification of the imaging optical system; a generation unit that generates a pair of focus detection signals by performing weighted addition on the signals of the plurality of colors using the addition coefficient; and a detection unit that detects an image shift amount between the pair of focus detection signals.Type: ApplicationFiled: January 5, 2018Publication date: July 19, 2018Inventor: Nobutaka Mizuno
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Patent number: 9911921Abstract: Provided is an organic light-emitting device capable of outputting light with high efficiency and high luminance. The organic light-emitting device includes an anode, a cathode, an emission layer placed between the anode and the cathode, and an organic compound layer placed between the anode and the emission layer, in which the organic compound layer contains the following compound A and compound B: [Compound A] an organic compound free of a nitrogen atom and a metal atom, the compound having SP2 carbon atoms and SP3 carbon atoms, and having a ratio of the number of the SP3 carbon atoms to the number of the SP2 carbon atoms of 40% or more; and [Compound B] a compound having a tertiary amine structure.Type: GrantFiled: April 3, 2014Date of Patent: March 6, 2018Assignee: Canon Kabushiki KaishaInventors: Naoki Yamada, Jun Kamatani, Akihito Saitoh, Yosuke Nishide, Masanori Muratsubaki, Ryuji Ishii, Koichi Ishige, Takayuki Ito, Norifumi Kajimoto, Nobutaka Mizuno
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Patent number: 9818984Abstract: Provided is an organic electroluminescence element improved in emission efficiency. The organic electroluminescence element includes: a reflective electrode; a light exiting side electrode; an emission layer provided between the reflective electrode and the light exiting side electrode; and at least one low-refractive index layer provided between the reflective electrode and the emission layer, the low-refractive index layer having a refractive index lower than the refractive index of the emission layer. An optical path L1 between the maximum emission surface of the emission layer and the reflection surface of the reflective electrode, and an optical path L2 between the reflection interface on an emission layer side of the low-refractive index layer and the maximum emission surface of the emission layer satisfy specific expressions.Type: GrantFiled: March 25, 2014Date of Patent: November 14, 2017Assignee: CANON KABUSHIKI KAISHAInventor: Nobutaka Mizuno
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Publication number: 20170272643Abstract: A focus detection apparatus comprising: an acquisition unit that acquires, for each color, a correction value for correcting a pair of focus detection signals of respective colors acquired from a color image sensor based on color sensitivity information unique to the color image sensor which includes a plurality of photoelectric conversion portions for each of a plurality of microlenses, and performing photoelectric conversion on light entering via an imaging optical system to output an electric signal; a correction unit that corrects each focus detection signal by using the correction value; a generation unit that processes the pair of corrected focus detection signals of the respective colors, and generates a pair of focus detection signals; and a focus detection unit that detects an evaluation value based on the pair of focus detection signals.Type: ApplicationFiled: March 17, 2017Publication date: September 21, 2017Inventors: Yoshihito Tamaki, Nobutaka Mizuno
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Patent number: 9755165Abstract: Provided is an organic light emitting element having high light emitting efficiency. The organic light emitting element includes: an anode; a cathode; an emission layer placed between the anode and the cathode; and a hole transport layer formed between the anode and the emission layer, in which the hole transport layer contains a siloxane compound and a compound having a tertiary arylamine structure; and number of SP2 carbon atoms in the hole transport layer is ten times or less number of silicon atoms in the hole transport layer.Type: GrantFiled: March 25, 2014Date of Patent: September 5, 2017Assignee: Canon Kabushiki KaishaInventors: Yosuke Nishide, Naoki Yamada, Jun Kamatani, Ryuji Ishii, Norifumi Kajimoto, Takayuki Ito, Nobutaka Mizuno, Koichi Ishige, Akihito Saitoh
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Patent number: 9547252Abstract: Provided is an organic light emitting device, including: a lower electrode; an upper electrode and a substrate having an electrode pad portion, in which when an angle formed by a slant in section of a film end in a region between the lower electrode and the electrode pad portion and a surface of the substrate is given as ?1, Formula (1) and Formula (2) are satisfied; and when an angle formed by a slant in section of a film end in at least a part of other regions than the region between the lower electrode and the electrode pad portion and the surface of the substrate is given as ?3, Formula (3) and Formula (4) are satisfied. tan(?1)=d1/d2??(1) tan(?1)<0.2??(2) tan(?3)=d3/d4??(3) tan(?3)?0.Type: GrantFiled: June 9, 2015Date of Patent: January 17, 2017Assignee: Canon Kabushiki KaishaInventors: Nobutaka Mizuno, Kiyofumi Sakaguchi, Satoru Shiobara, Yojiro Matsuda
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Publication number: 20160118607Abstract: Provided is an organic light emitting element having high light emitting efficiency. The organic light emitting element includes: an anode; a cathode; an emission layer placed between the anode and the cathode; and a hole transport layer formed between the anode and the emission layer, in which the hole transport layer contains a siloxane compound and a compound having a tertiary arylamine structure; and number of SP2 carbon atoms in the hole transport layer is ten times or less number of silicon atoms in the hole transport layer.Type: ApplicationFiled: March 25, 2014Publication date: April 28, 2016Inventors: Yosuke Nishide, Naoki Yamada, Jun Kamatani, Ryuji Ishii, Norifumi Kajimoto, Takayuki Ito, Nobutaka Mizuno, Koichi Ishige, Akihito Saitoh
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Publication number: 20150372238Abstract: Provided is an organic light-emitting device capable of outputting light with high efficiency and high luminance. The organic light-emitting device includes an anode, a cathode, an emission layer placed between the anode and the cathode, and an organic compound layer placed between the anode and the emission layer, in which the organic compound layer contains the following compound A and compound B: [Compound A] an organic compound free of a nitrogen atom and a metal atom, the compound having SP2 carbon atoms and SP3 carbon atoms, and having a ratio of the number of the SP3 carbon atoms to the number of the SP2 carbon atoms of 40% or more; and [Compound B] a compound having a tertiary amine structure.Type: ApplicationFiled: April 3, 2014Publication date: December 24, 2015Inventors: Naoki Yamada, Jun Kamatani, Akihito Saitoh, Yosuke Nishide, Masanori Muratsubaki, Ryuji Ishii, Koichi Ishige, Takayuki Ito, Norifumi Kajimoto, Nobutaka Mizuno