Patents by Inventor Shigeo Takahashi
Shigeo Takahashi 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: 10674065Abstract: An exchangeable lens includes: a mount unit at which a camera body is detachably engaged; a plurality of drive target members, conditions of which change as a drive force is applied thereto; an initialization unit that executes initialization processing for each of the plurality of drive target members; an initialization status transmission unit that transmits initialization statuses, each indicating a status of the initialization processing executed for one of the drive target members, to the camera body via a first transmission path over predetermined first cycles; and a drive condition transmission unit that transmits a drive condition of at least one drive target member among the plurality of drive target members to the camera body via a second transmission path different from the first transmission path over predetermined second cycles different from the predetermined first cycles.Type: GrantFiled: August 29, 2018Date of Patent: June 2, 2020Assignee: NIKON CORPORATIONInventors: Masafumi Oikawa, Kazuharu Imafuji, Shigeo Takahashi, Shunji Nagaya
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Publication number: 20200088954Abstract: A ferrule that holds an end part of an optical fiber includes a fiber hole into which the optical fiber is inserted and an upper wall part and a lower wall part that define a hollow adhesive filling part, where the lower wall part faces the upper wall part. The adhesive filling part is filled with an adhesive applied between the optical fiber inserted in the fiber hole and an inner wall surface of the adhesive filling part. The upper wall part has an upper opening through which the adhesive passes into the adhesive filling part, and the lower wall part has a lower opening that ventilates the adhesive filling part to outside of the ferrule.Type: ApplicationFiled: December 7, 2017Publication date: March 19, 2020Applicant: FUJIKURA LTD.Inventors: Akihiro Nakama, Shigeo Takahashi, Hirotaka Asada, Kazuaki Toba, Masanari Yamamoto, Ryohei Takahashi
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Publication number: 20200016632Abstract: A cleaning tool that cleans an optical connector includes an adhesive body that contacts an optical signal region of the optical connector where an optical signal enters and is emitted from the optical connector. The adhesive body includes a protrusion that protrudes in a region—that contacts the optical signal region.Type: ApplicationFiled: March 6, 2018Publication date: January 16, 2020Applicant: FUJIKURA LTD.Inventors: Akihiro Nakama, Junichi Nakane, Kunihiko Fujiwara, Shigeo Takahashi, Hirotaka Asada, Makoto Goto, Masayoshi Suzuki
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Publication number: 20190369337Abstract: A cleaning tool for cleaning a plurality of optical connectors where the cleaning tool includes: an adhesive portion that is integrally formed with the cleaning tool and that contacts a plurality of connecting end faces of the optical connectors collectively. The plurality of optical connectors are inserted into and connected with one housing that is fitted with another housing. The adhesive portion is disposed on the other housing. The adhesive portion contacts the connecting end faces collectively by fitting the one housing with the other housing.Type: ApplicationFiled: October 23, 2017Publication date: December 5, 2019Applicant: FUJIKURA LTD.Inventors: Junichi Nakane, Kunihiko Fujiwara, Shigeo Takahashi, Akihiro Nakama, Hirotaka Asada
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Publication number: 20190353850Abstract: An optical loopback member attaches to a counterpart optical connector to face a plurality of optical fibers of the counterpart optical connector that includes a first input optical fiber, second input optical fiber, first output optical fiber, and second output optical fiber. The optical loopback member includes a first reflector including: a first output light reflection surface that reflects a first output light, outputted in a first direction, from the first output optical fiber; and a first input light reflection surface that reflects light reflected by the first output light reflection surface and directs the reflected light to the first input optical fiber arranged in a second direction with respect to the first output optical fiber. The second direction is perpendicular to the first direction.Type: ApplicationFiled: February 28, 2018Publication date: November 21, 2019Applicant: FUJIKURA LTD.Inventors: Hirotaka Asada, Akihiro Nakama, Shigeo Takahashi
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Patent number: 10462854Abstract: Heating coils are opposed to a portion of an annular workpiece having a continuously provided recessed surface, and the heating coils and the annular workpiece are moved relative to each other to heat the recessed surface by induction heating. The heating apparatus includes a first heating coil having a first corner conductor portion to be opposed to a first corner portion of the recessed surface and a first bottom conductor portion connected to the first corner conductor portion to be opposed to the bottom portion, and a second heating coil having a second corner conductor portion to be opposed to a second corner portion of the recessed surface and a second bottom conductor portion connected to the second corner conductor portion to be opposed to the bottom portion.Type: GrantFiled: April 8, 2015Date of Patent: October 29, 2019Assignee: NETUREN CO., LTD.Inventors: Yutaka Kiyosawa, Shigeo Takahashi, Yasuharu Ogawa
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Publication number: 20190269605Abstract: An external composition for skin comprises 0.1% by mass to 8% by mass of a non-emulsified silicone elastomer; a polyether-modified silicone surfactant; and a hydrophilic nonionic surfactant. The hydrophilic nonionic surfactant comprises a glycerin-derived surfactant. The polyether-modified silicone surfactant is 0.3 part by mass or more with respect to 1 part by mass of the silicone elastomer. The glycerin-derived surfactant is 0.2 part by mass or more with respect to 1 part by mass of the silicone elastomer. In a case where an amphoteric surfactant is included, the amphoteric surfactant is 1.5 parts by mass or less with respect to 1 part by mass of the glycerin-derived surfactant. The viscosity of the composition is 9,500 mPa·s or less.Type: ApplicationFiled: November 14, 2017Publication date: September 5, 2019Applicant: SHISEIDO COMPANY, LTD.Inventors: Shigeo TAKAHASHI, Ryo FURUKAWA, Noriko DAIDOGUCHI, Kazuaki SUZUKI, Motohiro YANAI
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Publication number: 20190265417Abstract: A ferrule structure includes: a ferrule body including a guide hole that accepts insertion of a guide pin, and a fiber hole that accepts insertion of an optical fiber and that is disposed in an opening surface of the ferrule body; and a lens plate including a guide hole that accepts insertion of the guide pin, a lens part, and an abutment surface that abuts an endface of the optical fiber. A recess is disposed in at least one of the ferrule body and the lens plate. A matching material filling gap, that is to be filled with a refractive index matching material, is formed with the recess, between the opening surface of the ferrule body and the abutment surface of the lens plate.Type: ApplicationFiled: November 29, 2017Publication date: August 29, 2019Applicant: FUJIKURA LTD.Inventors: Akihiro NAKAMA, Shigeo TAKAHASHI, Hirotaka ASADA
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Patent number: 10359581Abstract: A clamp member includes: a body part that includes a fiber insertion hole where an optical fiber is inserted and a hole for tension member where a tension member is inserted; and an anchoring screw that fixes the tension member to the body part. The clamp member is fixed to an end of an optical cable that includes the optical fiber and the tension member, and the clamp member is fixed to and housed in an outer housing of an optical connector.Type: GrantFiled: September 10, 2018Date of Patent: July 23, 2019Assignee: Fujikura Ltd.Inventors: Daiki Takeda, Shigeo Takahashi
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Publication number: 20190094473Abstract: A clamp member includes: a body part that includes a fiber insertion hole where an optical fiber is inserted and a hole for tension member where a tension member is inserted; and an anchoring screw that fixes the tension member to the body part. The clamp member is fixed to an end of an optical cable that includes the optical fiber and the tension member, and the clamp member is fixed to and housed in an outer housing of an optical connector.Type: ApplicationFiled: September 10, 2018Publication date: March 28, 2019Applicant: FUJIKURA LTD.Inventors: Daiki Takeda, Shigeo Takahashi
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Patent number: 10222559Abstract: A ferrule holds end portions of optical fibers and includes: a plurality of optical fiber holes arranged in a predetermined direction, wherein the optical fibers are inserted into the plurality of optical fiber holes; and an adhesive-filling section that is filled with an adhesive and internally includes an opening surface of the plurality of optical fiber holes and an opposed surface opposed to the opening surface. The adhesive-filling section includes an upper side opening and a lower side opening, the upper side opening opens on a top surface that is a surface on a side from which the adhesive is filled, and the lower side opening opens on a lower surface that is a surface on a side opposite to the top surface.Type: GrantFiled: January 29, 2016Date of Patent: March 5, 2019Assignee: FUJIKURA LTD.Inventors: Akihiro Nakama, Shigeo Takahashi, Tatsuya Ota
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Patent number: 10209455Abstract: An optical-fiber-attached ferrule includes: an optical fiber hole into which an optical fiber is inserted; and a filling section filled with a liquid refractive index-matching material.Type: GrantFiled: December 5, 2016Date of Patent: February 19, 2019Assignee: FUJIKURA LTD.Inventors: Akihiro Nakama, Shigeo Takahashi
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Patent number: 10162125Abstract: A plug-side optical connector includes: an insertion section that is inserted inside a cylindrical coupling section of a receptacle-side optical connector; a rotation section that is coupled to the coupling section of the receptacle-side optical connector; and a waterproofing member disposed on an outer peripheral surface of the insertion section inside the rotation section to contact an inner peripheral surface of the coupling section of the receptacle-side optical connector when the insertion section is inserted inside the coupling section of the receptacle-side optical connector. The rotation section is rotatable outside the insertion section.Type: GrantFiled: November 30, 2015Date of Patent: December 25, 2018Assignee: FUJIKURA LTD.Inventors: Shigeo Takahashi, Seiji Kato
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Publication number: 20180367724Abstract: An exchangeable lens includes: a mount unit at which a camera body is detachably engaged; a plurality of drive target members, conditions of which change as a drive force is applied thereto; an initialization unit that executes initialization processing for each of the plurality of drive target members; an initialization status transmission unit that transmits initialization statuses, each indicating a status of the initialization processing executed for one of the drive target members, to the camera body via a first transmission path over predetermined first cycles; and a drive condition transmission unit that transmits a drive condition of at least one drive target member among the plurality of drive target members to the camera body via a second transmission path different from the first transmission path over predetermined second cycles different from the predetermined first cycles.Type: ApplicationFiled: August 29, 2018Publication date: December 20, 2018Applicant: NIKON CORPORATIONInventors: Masafumi OIKAWA, Kazuharu IMAFUJI, Shigeo TAKAHASHI, Shunji NAGAYA
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Patent number: 10091407Abstract: An exchangeable lens includes: a mount unit at which a camera body is detachably engaged; a plurality of drive target members, conditions of which change as a drive force is applied thereto; an initialization unit that executes initialization processing for each of the plurality of drive target members; an initialization status transmission unit that transmits initialization statuses, each indicating a status of the initialization processing executed for one of the drive target members, to the camera body via a first transmission path over predetermined first cycles; and a drive condition transmission unit that transmits a drive condition of at least one drive target member among the plurality of drive target members to the camera body via a second transmission path different from the first transmission path over predetermined second cycles different from the predetermined first cycles.Type: GrantFiled: August 30, 2017Date of Patent: October 2, 2018Assignee: NIKON CORPORATIONInventors: Masafumi Oikawa, Kazuharu Imafuji, Shigeo Takahashi, Shunji Nagaya
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Publication number: 20180120512Abstract: An optical-fiber-attached ferrule includes: an optical fiber hole into which an optical fiber is inserted; and a filling section filled with a liquid refractive index-matching material.Type: ApplicationFiled: December 5, 2016Publication date: May 3, 2018Applicant: FUJIKURA LTD.Inventors: Akihiro Nakama, Shigeo Takahashi
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Publication number: 20180120516Abstract: A ferrule holds end portions of optical fibers and includes: a plurality of optical fiber holes arranged in a predetermined direction, wherein the optical fibers are inserted into the plurality of optical fiber holes; and an adhesive-filling section that is filled with an adhesive and internally includes an opening surface of the plurality of optical fiber holes and an opposed surface opposed to the opening surface. The adhesive-filling section includes an upper side opening and a lower side opening, the upper side opening opens on a top surface that is a surface on a side from which the adhesive is filled, and the lower side opening opens on a lower surface that is a surface on a side opposite to the top surface.Type: ApplicationFiled: January 29, 2016Publication date: May 3, 2018Applicant: FUJIKURA LTD.Inventors: Akihiro Nakama, Shigeo Takahashi, Tatsuya Ota
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Patent number: 9927583Abstract: An optical connector comprises a housing, a regulating portion which is protrudes toward an inner surface of the housing, a ferrule which is secured to an optical fiber and which is accommodated inside the housing so as to be movable. The ferrule includes a base portion and a thinned portion that has a thickness smaller than that of the base portion. If the ferrule moves forward in the butt-connection direction, the regulating portion and the base portion approach each other, so that the regulating portion regulates the movement of the ferrule in the thickness direction. If the ferrule moves backward in the butt-connection direction, the ferrule reaches a position where the thinned portion faces the regulating portion, so that the movement of the ferrule in the thickness direction is not regulated by the regulating portion.Type: GrantFiled: March 25, 2015Date of Patent: March 27, 2018Assignee: FUJIKURA LTD.Inventors: Akihiro Nakama, Shigeo Takahashi, Kazuhiro Takizawa
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Publication number: 20180045894Abstract: A plug-side optical connector includes: an insertion section that is inserted inside a cylindrical coupling section of a receptacle-side optical connector; a rotation section that is coupled to the coupling section of the receptacle-side optical connector; and a waterproofing member disposed on an outer peripheral surface of the insertion section inside the rotation section to contact an inner peripheral surface of the coupling section of the receptacle-side optical connector when the insertion section is inserted inside the coupling section of the receptacle-side optical connector.Type: ApplicationFiled: November 30, 2015Publication date: February 15, 2018Applicant: FUJIKURA LTD.Inventors: Shigeo Takahashi, Seiji Kato
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Publication number: 20170366734Abstract: An exchangeable lens includes: a mount unit at which a camera body is detachably engaged; a plurality of drive target members, conditions of which change as a drive force is applied thereto; an initialization unit that executes initialization processing for each of the plurality of drive target members; an initialization status transmission unit that transmits initialization statuses, each indicating a status of the initialization processing executed for one of the drive target members, to the camera body via a first transmission path over predetermined first cycles; and a drive condition transmission unit that transmits a drive condition of at least one drive target member among the plurality of drive target members to the camera body via a second transmission path different from the first transmission path over predetermined second cycles different from the predetermined first cycles.Type: ApplicationFiled: August 30, 2017Publication date: December 21, 2017Applicant: NIKON CORPORATIONInventors: Masafumi OIKAWA, Kazuharu IMAFUJI, Shigeo TAKAHASHI, Shunji NAGAYA