Patents by Inventor Koichi Sakuma
Koichi Sakuma 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: 11945118Abstract: A method of planning works for robots includes creating a work plan for a plurality of robots, each having a work tool, sharing at at least one station a work to a plurality of work parts of the workpiece. The method includes the steps of calculating a distribution of the work parts to the robots, calculating, as a robot operation, a work order of the work parts and a moving path of the work tool for each of the robots based on the calculated work distribution, and calculating a disposed location of each of the robots with respect to the workpiece and a station where the robot is disposed so that an inter-robot interference does not occur during execution of the calculated robot operation.Type: GrantFiled: December 27, 2019Date of Patent: April 2, 2024Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Koichi Masaoka, Shota Asazu, Hiroyuki Moriishi, Tomoya Sakuma, Yuji Hashiba, Jun Fujimori, Hitoshi Nariai, Kazumi Fukuhara
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Publication number: 20230046807Abstract: Provided is a lens apparatus attachable and removable to a camera apparatus, the lens apparatus comprising a communication device configured to transmit, to an external device, information for light amount compensation of image data obtained by image pickup in the camera apparatus, in which the information includes information of a coefficient A0 of a term of 0-th-order with respect to an image height in a polynomial of n-th-order with respect to the image height, and in which a conditional expression 0.7<A0(Z)×(Fw/F(Z))2<1.3 is satisfied where A0(Z) represents the coefficient Ao at a zoom state Z, F(Z) represents an effective F-number at the zoom state Z, and Fw represents an effective F-number at a wide angle end.Type: ApplicationFiled: October 27, 2022Publication date: February 16, 2023Inventors: Tomoyuki Nakamura, Koichi Sakuma, Kei Kinoshita
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Patent number: 11513426Abstract: Provided is a lens apparatus attachable and removable to a camera apparatus, the lens apparatus comprising a communication device configured to transmit, to an external device, information for light amount compensation of image data obtained by image pickup in the camera apparatus, in which the information includes information of a coefficient A0 of a term of 0-th-order with respect to an image height in a polynomial of n-th-order with respect to the image height, and in which a conditional expression 0.7<A0(Z)×(Fw/F(Z))2<1.3 is satisfied where A0(Z) represents the coefficient A0 at a zoom state Z, F(Z) represents an effective F-number at the zoom state Z, and Fw represents an effective F-number at a wide angle end.Type: GrantFiled: September 10, 2019Date of Patent: November 29, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Tomoyuki Nakamura, Koichi Sakuma, Kei Kinoshita
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Publication number: 20220050360Abstract: Provided is a lens apparatus attachable and removable to a camera apparatus, the lens apparatus comprising a communication device configured to transmit, to an external device, information for light amount compensation of image data obtained by image pickup in the camera apparatus, in which the information includes information of a coefficient A0 of a term of 0-th-order with respect to an image height in a polynomial of n-th-order with respect to the image height, and in which a conditional expression 0.7<A0(Z)×(Fw/F(Z))2<1.3 is satisfied where A0(Z) represents the coefficient A0 at a zoom state Z, F(Z) represents an effective F-number at the zoom state Z, and Fw represents an effective F-number at a wide angle end.Type: ApplicationFiled: September 10, 2019Publication date: February 17, 2022Inventors: Tomoyuki Nakamura, Koichi Sakuma, Kei Kinoshita
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Patent number: 11187870Abstract: Provided is a lens apparatus attachable and detachable to a camera apparatus including: a memory storing information for light amount compensation for image data obtained by pickup of an image formed by the lens apparatus; and a communication device configured to transmit the information to an external apparatus, the information including a coefficient of a polynomial having an n-th order with respect to an image height, “n” being a non-negative integer, the coefficient corresponding to one of a plurality of focal lengths, the plurality of focal lengths including a focal length “f”, which satisfies a conditional expression: 0.9<f/ft/(Fnw/Fnt)<4, where Fnw represents an effective f-number at a wide angle end, Fnt represents an effective f-number at a telephoto end, and “ft” represents a focal length at the telephoto end.Type: GrantFiled: September 6, 2019Date of Patent: November 30, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Koichi Sakuma, Tomoyuki Nakamura
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Patent number: 11181716Abstract: Provided is a converter lens arranged between an interchangeable lens and an image pickup apparatus, wherein a distance from a most-object-side lens surface vertex to an object point of the converter lens, a distance L from the most-object-side lens surface vertex to a most-image-side lens surface vertex, and a most-image-side distance from the lens surface vertex to an image point of the converter lens are properly set, wherein, at least one negative lens included in a rear lens unit composed of lenses satisfying LN>0.5×L where LN is a most-object-side distance from the lens surface vertex to a surface vertex on the object side of the lenses, satisfies ?gF>?0.00162×vd+0.654, where ?gF is relative partial dispersion and vd is Abbe number in d-line, and an average focal length of the at least one negative lens, and a focal length of an entire system of the converter lens are properly set.Type: GrantFiled: June 21, 2018Date of Patent: November 23, 2021Assignee: CANON KABUSHIKI KAISHAInventor: Koichi Sakuma
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Patent number: 11156810Abstract: A zoom lens includes, in order from an object side to an image side: a focus lens unit configured to be moved for focusing on an optical axis; a zoom lens unit configured to be moved for zooming on the optical axis; and a relay lens unit, in which an interval between each pair of adjacent lens units is changed for zooming, and the zoom lens includes an aperture stop arranged between the zoom lens unit and the relay lens unit or within the relay lens unit, the relay lens unit includes an extender lens unit insertable into and removable from an optical path of the relay lens unit, in which the extender lens unit includes a negative lens Lm which is an m-th lens from the object side in the extender lens unit and having a refractive index and an Abbe number that satisfy predetermined conditions.Type: GrantFiled: August 27, 2019Date of Patent: October 26, 2021Assignee: CANON KABUSHIKI KAISHAInventor: Koichi Sakuma
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Publication number: 20200081232Abstract: A zoom lens includes, in order from an object side to an image side: a focus lens unit configured to be moved for focusing on an optical axis; a zoom lens unit configured to be moved for zooming on the optical axis; and a relay lens unit, in which an interval between each pair of adjacent lens units is changed for zooming, and the zoom lens includes an aperture stop arranged between the zoom lens unit and the relay lens unit or within the relay lens unit, the relay lens unit includes an extender lens unit insertable into and removable from an optical path of the relay lens unit, in which the extender lens unit includes a negative lens Lm which is an m-th lens from the object side in the extender lens unit and having a refractive index and an Abbe number that satisfy predetermined conditions.Type: ApplicationFiled: August 27, 2019Publication date: March 12, 2020Inventor: Koichi Sakuma
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Publication number: 20200081222Abstract: Provided is a lens apparatus attachable and detachable to a camera apparatus including: a memory storing information for light amount compensation for image data obtained by pickup of an image formed by the lens apparatus; and a communication device configured to transmit the information to an external apparatus, the information including a coefficient of a polynomial having an n-th order with respect to an image height, “n” being a non-negative integer, the coefficient corresponding to one of a plurality of focal lengths, the plurality of focal lengths including a focal length “f”, which satisfies a conditional expression: 0.9<f/ft/(Fnw/Fnt)<4, where Fnw represents an effective f-number at a wide angle end, Fnt represents an effective f-number at a telephoto end, and “ft” represents a focal length at the telephoto end.Type: ApplicationFiled: September 6, 2019Publication date: March 12, 2020Inventors: Koichi Sakuma, Tomoyuki Nakamura
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Patent number: 10197780Abstract: A zoom lens includes a positive first unit, a negative second unit, and a rear lens system. The rear lens system includes a positive unit A, a negative unit B, and a positive C. The first unit is not moved for zooming, the unit A is moved for zooming, and intervals between adjacent lens units are changed during zooming. The first unit includes positive and negative lenses, the unit C includes positive and negative lenses, the second unit includes negative lenses, and the unit B includes positive lenses. An Abbe number average value of the positive lenses in the first unit, an Abbe number average value of the negative lenses in the second unit, an Abbe number average value of the positive lenses in the unit B, and an Abbe number average value of the positive lenses in the unit C are appropriately set.Type: GrantFiled: October 18, 2017Date of Patent: February 5, 2019Assignee: CANON KABUSHIKI KAISHAInventor: Koichi Sakuma
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Publication number: 20180372991Abstract: Provided is a converter lens arranged between an interchangeable lens and an image pickup apparatus, wherein a distance from a most-object-side lens surface vertex to an object point of the converter lens, a distance L from the most-object-side lens surface vertex to a most-image-side lens surface vertex, and a most-image-side distance from the lens surface vertex to an image point of the converter lens are properly set, wherein, at least one negative lens included in a rear lens unit composed of lenses satisfying LN>0.5×L where LN is a most-object-side distance from the lens surface vertex to a surface vertex on the object side of the lenses, satisfies ?gF>?0.00162×vd+0.654, where ?gF is relative partial dispersion and vd is Abbe number in d-line, and an average focal length of the at least one negative lens, and a focal length of an entire system of the converter lens are properly set.Type: ApplicationFiled: June 21, 2018Publication date: December 27, 2018Inventor: Koichi Sakuma
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Publication number: 20180113288Abstract: A zoom lens includes a positive first unit, a negative second unit, and a rear lens system. The rear lens system includes a positive unit A, a negative unit B, and a positive C. The first unit is not moved for zooming, the unit A is moved for zooming, and intervals between adjacent lens units are changed during zooming. The first unit includes positive and negative lenses, the unit C includes positive and negative lenses, the second unit includes negative lenses, and the unit B includes positive lenses. An Abbe number average value of the positive lenses in the first unit, an Abbe number average value of the negative lenses in the second unit, an Abbe number average value of the positive lenses in the unit B, and an Abbe number average value of the positive lenses in the unit C are appropriately set.Type: ApplicationFiled: October 18, 2017Publication date: April 26, 2018Inventor: Koichi Sakuma