Patents by Inventor Yuki Shinzato
Yuki Shinzato 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: 20240129629Abstract: A control apparatus for use in an imaging system that includes a first correcting member movable for image stabilization and provided to one of an image pickup apparatus and a lens apparatus detachably attachable to the image pickup apparatus, and a second correcting member movable for the image stabilization and provided to the other of the image pickup apparatus and the lens apparatus acquires first correction ratios of the first correcting member and the second correcting member for angular shake of the imaging system, and second correction ratios of the first correcting member and the second correcting member for shift shake of the imaging system.Type: ApplicationFiled: October 4, 2023Publication date: April 18, 2024Inventors: TOMOHIRO INO, SATOSHI MAETAKI, TOMOKI TOKITA, YUKI SHINZATO
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Publication number: 20240114244Abstract: A control apparatus sets a control ratio in accordance with image shift sensitivities for tilt of an optical system and image shift sensitivities for drive of first and second image stabilization units, the control ratio with which an image blur at an image central part is corrected and an image blur residue amount at an image peripheral part is reduced, in a case where the image shift sensitivities for tilt of the optical system for each image height in first and second image height directions different are different, the image shift sensitivities for drive of the first and second image stabilization units in the first image height direction are different from each other, and the image shift sensitivities for drive of the first and second image stabilization units in the second image height direction are different.Type: ApplicationFiled: September 21, 2023Publication date: April 4, 2024Inventors: YUKI SHINZATO, TOMOHIRO INO
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Patent number: 11800226Abstract: A control apparatus includes at least one processor or circuit configured to execute a plurality of tasks including a first acquiring task configured to acquire information on an image shift sensitivity to a tilt of an imaging optical system corresponding to an image point position of the imaging optical system, which information includes an influence of a distortion of the imaging optical system, and a second acquiring task configured to acquire an image-stabilization driving amount that is used for an image stabilization by an image stabilizer configured to provide the image stabilization. The second acquiring task acquires the image-stabilization driving amount corresponding to a predetermined image point position using the information on the image shift sensitivity corresponding to the predetermined image point position.Type: GrantFiled: February 25, 2022Date of Patent: October 24, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Yuki Shinzato, Tomoki Tokita, Tomohiro Ino, Satoshi Maetaki
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Patent number: 11714260Abstract: An optical system includes, in order from an object side to an image side, a front unit having a positive refractive power and including one or more lens units configured to move during focusing, and a negative lens unit having a negative refractive power. The one or more lens units included in the front unit moves to the object side during focusing from infinity to a short distance so as to widen a distance between the front unit and the negative lens unit. The front unit includes a first subunit having a negative refractive power and including a lens disposed on the object side of a first positive lens that is one of positive lenses included in the optical system, which is the closest to an object. A predetermined condition is satisfied.Type: GrantFiled: July 9, 2021Date of Patent: August 1, 2023Assignee: CANON KABUSHIKI KAISHAInventor: Yuki Shinzato
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Publication number: 20230217112Abstract: A control apparatus, which controls an image pickup system including a first apparatus that is one of an image pickup apparatus and a lens apparatus and a second apparatus that is the other, includes an acquisition unit configured to acquire first information on a first image stabilizing remaining amount at an off-axis image height according to correction by a first image shake corrector provided in the first apparatus and second information on a second image stabilizing remaining amount at the off-axis image height according to correction by a second image shake corrector provided in the second apparatus, and a control unit configured to control at least one of the first image shake corrector and the second image shake corrector on the basis of correction ratios of the first image shake corrector and the second image shake corrector determined using the first information and the second information.Type: ApplicationFiled: December 29, 2022Publication date: July 6, 2023Inventors: Tomohiro Ino, Satoshi Maetaki, Yuki Shinzato, Tomoki Tokita, Junichi Saito
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Patent number: 11493730Abstract: An optical system includes, in order from an object side to an image side, a first lens unit fixed during focusing, a second lens unit having a positive refractive power, configured to move during focusing, a third lens unit having a negative refractive power, configured to move during focusing, and a fourth lens unit fixed during focusing. During focusing from infinity to a short distance end, the second lens unit and the third lens unit move to the object side while a distance between the second lens unit and the third lens unit changes. A predetermined condition is satisfied.Type: GrantFiled: July 14, 2020Date of Patent: November 8, 2022Assignee: CANON KABUSHIKI KAISHAInventor: Yuki Shinzato
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Publication number: 20220321786Abstract: A control apparatus comprising at least one processor or circuit configured to execute a plurality of tasks includes a first acquisition task configured to acquire information on image shift sensitivity relative to decentering of an image stabilizing optical system, the information being associated with an image point position of an image pickup optical system, the image pickup optical system including the image stabilizing optical system configured to perform image stabilization, and a second acquisition task configured to acquire a first image stabilizing driving amount of the image stabilizing optical system during the image stabilization. The second acquisition task is configured to acquire the first image stabilizing driving amount associated with a predetermined image point position by using the information on the image shift sensitivity associated with the predetermined image point position.Type: ApplicationFiled: March 23, 2022Publication date: October 6, 2022Inventors: Yuki Shinzato, Tomoki Tokita, Tomohiro Ino, Satoshi Maetaki
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Publication number: 20220286615Abstract: A control apparatus includes at least one processor or circuit configured to execute a plurality of tasks including a first acquiring task configured to acquire information on an image shift sensitivity to a tilt of an imaging optical system corresponding to an image point position of the imaging optical system, which information includes an influence of a distortion of the imaging optical system, and a second acquiring task configured to acquire an image-stabilization driving amount that is used for an image stabilization by an image stabilizer configured to provide the image stabilization. The second acquiring task acquires the image-stabilization driving amount corresponding to a predetermined image point position using the information on the image shift sensitivity corresponding to the predetermined image point position.Type: ApplicationFiled: February 25, 2022Publication date: September 8, 2022Inventors: Yuki Shinzato, Tomoki Tokita, Tomohiro Ino, Satoshi Maetaki
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Publication number: 20220252840Abstract: An optical system includes, in order from an object side to an image side, a first lens unit consisting of one or more negative lenses, a second lens unit with positive refractive power disposed so as to have a first air space from the first lens unit, and a third lens unit disposed so as to have a second air space from the second lens unit. The first air space is a widest air space of air spaces formed closer to the object side than a positive lens disposed closest to the object side in the optical system. A surface of the first lens unit closest to the image side is concave. The third lens unit consists of a lens element with negative refractive power and having a concave surface on the object side. The optical system satisfies predetermined inequalities.Type: ApplicationFiled: February 9, 2022Publication date: August 11, 2022Inventor: Yuki Shinzato
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Publication number: 20220019061Abstract: An optical system includes, in order from an object side to an image side, a front unit having a positive refractive power and including one or more lens units configured to move during focusing, and a negative lens unit having a negative refractive power. The one or more lens units included in the front unit moves to the object side during focusing from infinity to a short distance so as to widen a distance between the front unit and the negative lens unit. The front unit includes a first subunit having a negative refractive power and including a lens disposed on the object side of a first positive lens that is one of positive lenses included in the optical system, which is the closest to an object. A predetermined condition is satisfied.Type: ApplicationFiled: July 9, 2021Publication date: January 20, 2022Inventor: Yuki Shinzato
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Patent number: 10978966Abstract: A vibration wave actuator has a vibration member including an elastic member and an electro-mechanical energy transducer, and a contact member in contact with the vibration member, and the contact member and the vibration member move relative to each other. The vibration wave actuator includes a detected portion configured to move, together with the contact member, relative to the vibration member, and a detection unit configured to move, together with the vibration member, relative to the contact member to detect displacement information or position information for the detected portion. The vibration member has two projections provided side by side in a direction intersecting with the direction of the relative movement. The contact member contacts the two projections. The detection unit and the detected portion are located between the contact member and the vibration member when viewed from the direction of the relative movement.Type: GrantFiled: September 25, 2018Date of Patent: April 13, 2021Assignee: Canon Kabushiki KaishaInventor: Yuki Shinzato
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Publication number: 20210018721Abstract: An optical system includes, in order from an object side to an image side, a first lens unit fixed during focusing, a second lens unit having a positive refractive power, configured to move during focusing, a third lens unit having a negative refractive power, configured to move during focusing, and a fourth lens unit fixed during focusing. During focusing from infinity to a short distance end, the second lens unit and the third lens unit move to the object side while a distance between the second lens unit and the third lens unit changes. A predetermined condition is satisfied.Type: ApplicationFiled: July 14, 2020Publication date: January 21, 2021Inventor: Yuki Shinzato
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Patent number: 10833608Abstract: A vibration actuator, which is capable of being miniaturized or obtaining stable drive performance, moves a vibration body and a contact body relatively. The vibration actuator includes a support member that supports the vibration body. The support member includes a vibration section joined to the vibration body, a first fixing section and a second fixing section that are provided on opposite sides of the vibration body for fixing the support member at a predetermined position, a first support section that connects the vibration section with the first fixing section to support the vibration body, a second support section that connects the vibration section with the second fixing section to support the vibration body, and conduction members that extend from the vibration body to the first fixing section, extend from the vibration body to the second fixing section, and supply electric power to the vibration body.Type: GrantFiled: July 25, 2017Date of Patent: November 10, 2020Assignee: Canon Kabushiki KaishaInventors: Yuki Shinzato, Kei Suefuji
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Patent number: 10419676Abstract: A vibration-type actuator is downsized and stably holds the position of a vibrating body. In the vibrating body, it is possible to excite vibrations in a first bending vibration mode with two nodal lines that do not cross each other but cross short sides of an elastic body, and no nodal line that connects two long sides of the elastic body together, and a second bending vibration mode in which amplitude peaks of vibration in an out-of-plane direction of a flat-shaped plane of the elastic body lie in six respective areas formed by dividing the flat-shaped plane, and in the adjoining areas, vibrations at the amplitude peaks are in opposite phases. Combined vibrations in the first and second bending vibration modes cause an oval motion of the projecting portion, moving the vibrating body and a driven body relatively to each other in a lateral direction of the elastic body.Type: GrantFiled: January 6, 2017Date of Patent: September 17, 2019Assignee: Canon Kabushiki KaishaInventor: Yuki Shinzato
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Publication number: 20190103822Abstract: A vibration wave actuator has a vibration member including an elastic member and an electro-mechanical energy transducer, and a contact member in contact with the vibration member, and the contact member and the vibration member move relative to each other. The vibration wave actuator includes a detected portion configured to move, together with the contact member, relative to the vibration member, and a detection unit configured to move, together with the vibration member, relative to the contact member to detect displacement information or position information for the detected portion. The vibration member has two projections provided side by side in a direction intersecting with the direction of the relative movement. The contact member contacts the two projections. The detection unit and the detected portion are located between the contact member and the vibration member when viewed from the direction of the relative movement.Type: ApplicationFiled: September 25, 2018Publication date: April 4, 2019Inventor: Yuki Shinzato
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Publication number: 20180041141Abstract: A vibration actuator that is capable of miniaturizing or obtaining stable drive performance. The vibration actuator moves a vibration body and a driven body relatively. The vibration actuator includes a support member that supports the vibration body. The support member includes a vibration section joined to the vibration body, a first fixing section and a second fixing section that are provided on both sides of the vibration body for fixing the support member at a predetermined position, a first support section that connects the vibration section with the first fixing section to support the vibration body, a second support section that connects the vibration section with the second fixing section to support the vibration body, and conduction members that extend from the vibration body to the first fixing section, extend from the vibration body to the second fixing section, and supply electric power to the vibration body.Type: ApplicationFiled: July 25, 2017Publication date: February 8, 2018Inventors: Yuki Shinzato, Kei Suefuji
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Publication number: 20170208253Abstract: A vibration-type actuator which is downsized and stably holds the position of a vibrating body. In the vibrating body, it is possible to excite vibrations in a first bending vibration mode with two nodal lines that do not cross each other but cross short sides of an elastic body, and no nodal line that connects two long sides of the elastic body together, and a second bending vibration mode in which amplitude peaks vibration in an out-of-plane direction of a flat-shaped plane of the elastic body lies in respective six areas formed by dividing the flat-shaped plane, and in the adjoining areas, vibrations at the amplitude peaks are in opposite phases. Combined vibrations in the first and second bending vibration modes cause an oval motion of the projecting portion, moving the vibrating body and a driven body relatively to each other in a lateral direction of the elastic body.Type: ApplicationFiled: January 6, 2017Publication date: July 20, 2017Inventor: Yuki Shinzato