Patents by Inventor Takumi Matsui
Takumi Matsui 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: 20240111129Abstract: A lens system for an imaging device is provided, the lens system comprising: a first lens group, having a fixed position along an optical axis Z of the lens system, the first lens group comprising a pair of lenses, each of the pair of lenses having at least one lens surface that is a free-form surface,; and a second lens group, arranged along the optical axis Z of the lens system, comprising a plurality of rotationally symmetrical lenses; wherein a first lens of the pair of lenses of the first lens group is configured to be moveable along a Y-axis of the lens system perpendicular to the optical axis Z of the lens system, and a second lens of the pair of lenses of the first lens group is configured to be moveable in an opposite direction to the first lens of the pair of lenses along the Y-axis.Type: ApplicationFiled: October 16, 2020Publication date: April 4, 2024Applicant: Sony Group CorporationInventors: Christin WEICHELT, Markus KAMM, Motoyuki OTAKE, Takumi MATSUI, Manabu ISHIOKA
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Patent number: 11926754Abstract: Provided is a coating film having excellent durability and wear resistance, and utility as mold surface release coating. The coating film has excellent releasability (non-adhesiveness) over a long period of time. Further provided is a coating composition capable of forming such a coating film, the coating composition containing a fluoropolymer and an oil that is a liquid at 25° C., wherein the decomposition temperature of the oil is higher than the melting point of the fluoropolymer.Type: GrantFiled: May 20, 2019Date of Patent: March 12, 2024Assignees: THE CHEMOURS COMPANY FC, LLC, CHEMOURS-MITSUI FLUOROPRODUCTS CO., LTD.Inventors: Hoai-Nam Pham, Daisaku Shinohara, Takumi Terao, Akihiro Matsui
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Publication number: 20230350158Abstract: An inner focusing lens unit includes at least one positive lens group and at least one negative lens group. The inner focusing lens unit is configured to be placed within a flange back between an imaging lens and an image sensor surface to provide a focusing function when the negative lens group is moved toward the imaging surface to focus at a nearer object distance when focusing from infinity to a minimum object distance (MOD).Type: ApplicationFiled: July 11, 2023Publication date: November 2, 2023Inventors: Yasuhide Nihei, Takumi Matsui
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Publication number: 20220146799Abstract: A first lens unit and a third lens unit are constituted by a lens which is rotationally symmetrical with respect to an optical axis and are disposed on the same optical axis, a first freeform-curved surface lens and a second freeform-curved surface lens have the same shape and are disposed to be rotated at 180 degrees with respect to the optical axis, the first freeform-curved surface lens and the second freeform-curved surface lens are movable in a Y-axis direction when the optical axes of the first lens unit and the third lens unit are set to be a Z-axis, an axis perpendicular to the Z-axis on an image surface is set to be a Y-axis, and an axis perpendicular to the Y-axis and the Z-axis on the image surface is set to be an X-axis, a refractive power of the second lens unit is variable due to the first freeform-curved surface lens and the second freeform-curved surface lens moving in opposite directions, and the first freeform-curved surface lens and the second freeform-curved surface lens are moved in the YType: ApplicationFiled: December 25, 2019Publication date: May 12, 2022Inventors: MOTOYUKI OTAKE, TAKUMI MATSUI, MANABU ISHIOKA, CHRISTIN WEICHELT, HIROSHI USHIDA, MARKUS KAMM
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Patent number: 10215999Abstract: A macro lens includes: a first focus lens group having negative refractive power; and a second focus lens group arranged closer to an image side than the first focus lens group is arranged and having positive refractive power. At time of performing a focusing operation from an object at infinite to an object at a close distance, the first focus lens group travels toward the image side, and the second focus lens group travels with a traveling amount different from a traveling amount of the first focus lens group. The second focus lens group is configured of only one positive lens.Type: GrantFiled: March 31, 2014Date of Patent: February 26, 2019Assignee: Sony CorporationInventor: Takumi Matsui
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Patent number: 9423598Abstract: A zoom lens includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a fourth lens group having a positive refractive power. The fourth lens group includes a first sub-lens group having a positive refractive power, a second sub-lens group having a negative refractive power, and a third sub-lens group. During zooming from a wide-angle end to a telephoto end, the first lens group and the first and third sub-lens groups are stationary in an optical axis direction relative to the image plane, the second and third lens groups move in the optical axis direction, and the second sub-lens group moves in the direction of the optical axis. During focusing from an infinite-distance object to a close-range object, the second sub-lens group moves in the optical axis direction.Type: GrantFiled: February 2, 2015Date of Patent: August 23, 2016Assignee: SONY CORPORATIONInventors: Takumi Matsui, Keita Kaifu
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Publication number: 20150226945Abstract: A zoom lens includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a fourth lens group having a positive refractive power. The fourth lens group includes a first sub-lens group having a positive refractive power, a second sub-lens group having a negative refractive power, and a third sub-lens group. During zooming from a wide-angle end to a telephoto end, the first lens group and the first and third sub-lens groups are stationary in an optical axis direction relative to the image plane, the second and third lens groups move in the optical axis direction, and the second sub-lens group moves in the direction of the optical axis. During focusing from an infinite-distance object to a close-range object, the second sub-lens group moves in the optical axis direction.Type: ApplicationFiled: February 2, 2015Publication date: August 13, 2015Inventors: TAKUMI MATSUI, KEITA KAIFU
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NETWORK SELECTION METHOD IN WIRELESS COMMUNICATION NETWORK AND WIRELESS COMMUNICATION NETWORK SYSTEM
Publication number: 20150032428Abstract: An object of the present invention is to optimize fairness of throughput in terminal devices in a wireless communication network, and to provide a technique for selecting combinations of the terminal devices and wireless network access. A method of selecting a destination network that optimizes throughput fairness of terminal devices in a wireless communication network system including a plurality of wireless access networks, and terminal devices that correspond to a plurality of types of wireless access networks, including: modeling a problem combining terminal devices to be optimized and a connection target network, as a minimum cost flow problem; calculating an exact solution of the minimum cost flow problem by computer operating means; and calculating the results of combining the terminal devices and the connection target network using network selection results operating means of a computer.Type: ApplicationFiled: February 28, 2013Publication date: January 29, 2015Inventors: Mikio Hasegawa, Takumi Matsui -
Publication number: 20140334014Abstract: A macro lens includes: a first focus lens group having negative refractive power; and a second focus lens group arranged closer to an image side than the first focus lens group is arranged and having positive refractive power. At time of performing a focusing operation from an object at infinite to an object at a close distance, the first focus lens group travels toward the image side, and the second focus lens group travels with a traveling amount different from a traveling amount of the first focus lens group. The second focus lens group is configured of only one positive lens.Type: ApplicationFiled: March 31, 2014Publication date: November 13, 2014Applicant: SONY CORPORATIONInventor: Takumi Matsui
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Patent number: 8780452Abstract: Disclosed herein is a zoom lens, including: a first lens group having a positive refracting power; a second lens group having a negative refracting power; a third lens group having a positive refracting power; and a fourth lens group having a positive refracting power; the first, second, third and fourth lens groups being disposed in order from the object side; the lens groups moving upon zooming from a wide angle end to a telephoto end of the zoom lens such that the distance between the first lens group and the second lens group increases while the distance between the second lens group and the third lens group decreases.Type: GrantFiled: October 26, 2012Date of Patent: July 15, 2014Assignee: Sony CorporationInventor: Takumi Matsui
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Patent number: 8218247Abstract: Disclosed herein is a zoom lens formed by arranging a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group having a positive refractive power in order from an object side to an image side, wherein at a time of varying power from a wide-angle end to a telephoto end, the first lens group is moved and the second lens group is moved to the object side integrally with a diaphragm such that an air interval between the first lens group and the second lens group is decreased and such that an air interval between the second lens group and the third lens group is increased.Type: GrantFiled: November 13, 2009Date of Patent: July 10, 2012Assignee: Sony CorporationInventors: Daisuke Kuroda, Makoto Kanai, Takumi Matsui, Hiroki Yamano
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Patent number: 7995284Abstract: A zoom lens includes: a first lens group having a positive refracting power; a second lens group having a negative refracting power; a third lens group having a positive refracting power; a fourth lens group having a positive refracting power; and a fifth lens group having a positive or negative refracting power; the first, second, third, fourth and fifth lenses being disposed in order from the object side to the image side of the zoom lens.Type: GrantFiled: November 16, 2010Date of Patent: August 9, 2011Assignee: Sony CorporationInventor: Takumi Matsui
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Publication number: 20110149119Abstract: A zoom lens includes: a first lens group having a positive refracting power; a second lens group having a negative refracting power; a third lens group having a positive refracting power; a fourth lens group having a positive refracting power; and a fifth lens group having a positive or negative refracting power; the first, second, third, fourth and fifth lenses being disposed in order from the object side to the image side of the zoom lens.Type: ApplicationFiled: November 16, 2010Publication date: June 23, 2011Applicant: Sony CorporationInventor: Takumi Matsui
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Patent number: 7957070Abstract: A zoom lens includes: first, second and third lens groups having negative refracting power, positive refracting power and positive refracting power, respectively, disposed in the order listed from an object side to an image side, wherein during zooming from a wide angle end to a telephoto end, the first lens group is moved and the second lens group is moved toward the object such that an air space between the first and second lens groups decreases and an air space between the second and third lens groups increases; and the first lens group is formed by first and second lenses, the first and second lenses being disposed in the order listed from the object side to the image side, and the zoom lens satisfying the following Conditional Expressions (1) and (2) nd12>2.0??(1) ?d12<21.6??(2).Type: GrantFiled: September 29, 2009Date of Patent: June 7, 2011Assignee: Sony CorporationInventors: Hiroki Yamano, Daisuke Kuroda, Makoto Kanai, Takumi Matsui
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Patent number: 7952811Abstract: Disclosed herein is a zoom lens formed by arranging a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group having a positive refractive power in order from an object side to an image side, wherein at a time of varying power from a wide-angle end to a telephoto end, the first lens group is moved, and the second lens group is moved to the object side such that an air interval between the first lens group and the second lens group is decreased and such that an air interval between the second lens group and the third lens group is increased.Type: GrantFiled: August 12, 2009Date of Patent: May 31, 2011Assignee: Sony CorporationInventors: Makoto Kanai, Daisuke Kuroda, Takumi Matsui, Hiroki Yamano
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Patent number: 7880974Abstract: A zoom lens includes a negative first lens group, a positive second lens group, and a positive third lens group; wherein, when changing power from a wide-angle end state to a tele end state, the first lens group moves such that air space between the first lens group and the second lens group decreases, and air space between the second lens group and the third lens group increases, and the second lens group moves toward the object side; and wherein the first lens group includes a negative lens with both faces formed aspherically and the concave face facing the image side, and a positive meniscus lens with at least one face formed aspherically and the convex face facing the object side, satisfying 2.8<|f1/fw|<3.3 where f1 represents the focal length of the first lens group, and fw represents the entire focal length in the wide-angle end state.Type: GrantFiled: March 4, 2010Date of Patent: February 1, 2011Assignee: Sony CorporationInventors: Takumi Matsui, Makoto Kanai, Daisuke Kuroda, Hiroki Yamano
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Publication number: 20100265594Abstract: A zoom lens includes a negative first lens group, a positive second lens group, and a positive third lens group; wherein, when changing power from a wide-angle end state to a tele end state, the first lens group moves such that air space between the first lens group and the second lens group decreases, and air space between the second lens group and the third lens group increases, and the second lens group moves toward the object side; and wherein the first lens group includes a negative lens with both faces formed aspherically and the concave face facing the image side, and a positive meniscus lens with at least one face formed aspherically and the convex face facing the object side, satisfying 2.8<|f1/fw|<3.3 where f1 represents the focal length of the first lens group, and fw represents the entire focal length in the wide-angle end state.Type: ApplicationFiled: March 4, 2010Publication date: October 21, 2010Applicant: SONY CORPORATIONInventors: Takumi Matsui, Makoto Kanai, Daisuke Kuroda, Hiroki Yamano
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Publication number: 20100128363Abstract: A zoom lens includes: first, second and third lens groups having negative refracting power, positive refracting power and positive refracting power, respectively, disposed in the order listed from an object side to an image side, wherein during zooming from a wide angle end to a telephoto end, the first lens group is moved and the second lens group is moved toward the object such that an air space between the first and second lens groups decreases and an air space between the second and third lens groups increases; and the first lens group is formed by first and second lenses, the first and second lenses being disposed in the order listed from the object side to the image side, and the zoom lens satisfying the following Conditional Expressions (1) and (2) nd12>2.0??(1) ?d12<21.6??(2).Type: ApplicationFiled: September 29, 2009Publication date: May 27, 2010Applicant: Sony CorporationInventors: Hiroki Yamano, Daisuke Kuroda, Makoto Kanai, Takumi Matsui
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Publication number: 20100123959Abstract: Disclosed herein is a zoom lens formed by arranging a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group having a positive refractive power in order from an object side to an image side, wherein at a time of varying power from a wide-angle end to a telephoto end, the first lens group is moved and the second lens group is moved to the object side integrally with a diaphragm such that an air interval between the first lens group and the second lens group is decreased and such that an air interval between the second lens group and the third lens group is increased.Type: ApplicationFiled: November 13, 2009Publication date: May 20, 2010Applicant: SONY CORPORATIONInventors: Daisuke Kuroda, Makoto Kanai, Takumi Matsui, Hiroki Yamano
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Patent number: D1021989Type: GrantFiled: July 1, 2022Date of Patent: April 9, 2024Assignee: NEC CORPORATIONInventors: Ryusuke Tsushima, Ryutaro Matsui, Aozora Hamano, Yutaka Takei, Takumi Hirose, Yoshiteru Tomooka, Toshiko Osaka