Patents by Inventor Akito Nishimura
Akito Nishimura 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: 20160161682Abstract: Disclosed is a tool for releasing an engaged state in which a receptacle-side engagement section formed on a side surface of a receptacle provided on a substrate is engaged with a connector-side engagement section of an optical connector that is attachable to and detachable from the receptacle. The tool includes: release claws to be inserted into respective gaps, each gap being formed between a member arranged between a pair of engagement side plate parts each being provided with the connector-side engagement section, and each engagement side plate part; and a guide part that comes into opposition with a side surface of the optical connector or the receptacle. By bringing the guide part into opposition with the side surface and sliding the release claws toward the substrate, the engagement side plate parts are spread outward by the release claws and the engaged state is released.Type: ApplicationFiled: December 1, 2015Publication date: June 9, 2016Applicant: FUJIKURA LTD.Inventor: Akito NISHIMURA
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Publication number: 20160161689Abstract: Disclosed is a connector holder including: a base body part; a pair of side wall parts that projects from the base body part; and a connector housing part that is formed by the base body part and the pair of side wall parts, and that is for housing an optical connector body which holds an end section of an optical fiber. A recess is formed in an inner surface of each of the side wall parts, the recesses being formed so as to oppose one another. A gap is formed between a side surface of the optical connector body and each recess when the optical connector body is housed in the connector housing part.Type: ApplicationFiled: December 2, 2015Publication date: June 9, 2016Applicant: FUJIKURA LTD.Inventor: Akito NISHIMURA
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Patent number: 9158071Abstract: An optical path-changing member comprises a member main body which is made of a transparent material and in which a reflection section optically connecting the optical fiber to the light input and output end is formed, wherein the reflection section is a first lens having a concave shape when viewed from an incident direction and making light incident on the inside of the member main body from one of the optical fiber and the light input and output end be internally reflected in the member main body and directed to the other of the optical fiber and the light input and output end, a second lens having a convex shape toward the optical component is formed in a light incidence and emission surface of the member main body, that faces the optical component.Type: GrantFiled: April 2, 2013Date of Patent: October 13, 2015Assignee: FUJIKURA LTD.Inventors: Akito Nishimura, Shota Numata
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Publication number: 20150198771Abstract: A ferrule of the present invention includes a positioning mechanism for positioning an optical fiber, and a recess having at least a first inner wall for allowing a front end of the optical fiber portion positioned by the positioning mechanism to protrude, and a second inner wall opposite to the first inner wall. A distance between the first inner wall and the second inner wall is less than or equal to four times the outer diameter of the optical fiber. Adhesive is filled into the recess and cured in a state in which the optical fiber protrudes from the first inner wall and substantially contacts the second inner wall to fix the optical fiber.Type: ApplicationFiled: March 25, 2015Publication date: July 16, 2015Applicant: FUJIKURA LTD.Inventors: Akihiro NAKAMA, Tatsuya OTA, Akito NISHIMURA, Terutake KOBAYASHI
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Patent number: 9063304Abstract: Provided is a ferrule which includes a positioning mechanism configured to position an optical fiber having a predetermined outer diameter, and a recess configured for an adhesive to be disposed therein and having a first inner wall from which a front end of the optical fiber portion positioned by the positioning mechanism is protrudable, and a second inner wall opposite to the first inner wall. A distance between the first inner wall and the second inner wall is less than or equal to four times the outer diameter of the optical fiber.Type: GrantFiled: September 9, 2010Date of Patent: June 23, 2015Assignee: FUJIKURA LTD.Inventors: Tatsuya Ohta, Akito Nishimura, Terutake Kobayashi, Kunihiko Fujiwara
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Publication number: 20150086164Abstract: According to an aspect of the apparatus of the present invention, wind generated by a cooling fan blows in a housing, and a port is optically connected with an optical module via an optical fiber. Further, a shielding wall is provided to an optical fiber arranging member, which supports and guides the optical fiber, so as to prevent the optical fiber from being exposed to the wind.Type: ApplicationFiled: September 17, 2014Publication date: March 26, 2015Applicant: FUJIKURA LTD.Inventors: Akito NISHIMURA, Kenji KOHARA
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Patent number: 8961037Abstract: An optical connector body is formed by an optically-transparent resin molding. The optical connector body includes an optical fiber insertion hole formed parallel to a board surface, a wall with which an optical fiber provided at a front of the optical fiber insertion hole contacts, and an internal reflection surface adjacent to and in front of the wall. The internal reflection surface is formed at a bottom surface of a bottomed hole opened from outside in the optical connector body.Type: GrantFiled: October 16, 2009Date of Patent: February 24, 2015Assignee: Fujikura Ltd.Inventor: Akito Nishimura
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Patent number: 8805138Abstract: A method of manufacturing an optical path change optical connector, the method including: resin-molding a core part, the core part including an optical-fiber-hole-formed portion having an optical fiber hole, and a positioning structure portion for positioning the core part with respect to the circuit board; inserting an optical fiber into the optical fiber hole; and over-molding the core part with light-transmitting resin, covering a front end face of the optical-fiber-hole-formed portion and forming an inclined internal reflective surface opposite to the front end face of the optical-fiber-hole-formed portion, such that the inclined internal reflective surface is positioned to reflect light between the optical fiber inserted into the optical fiber hole and an optical element disposed on a circuit board on which the core part is mounted.Type: GrantFiled: September 10, 2010Date of Patent: August 12, 2014Assignee: Fujikura Ltd.Inventor: Akito Nishimura
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Patent number: 8641296Abstract: Provided is an optical path change member including a holding member body formed of a transparent material. The holding member body includes: at least two rows of optical-fiber insertion holes which hold optical fibers inserted therein, such that the optical axes of the optical fibers are inclined with respect to an optical axis of the optical device, and a reflective inner surface which totally internally reflects light incident from the optical-fiber insertion holes to a surface of the holding member body configured to face an optical device on a board.Type: GrantFiled: September 9, 2010Date of Patent: February 4, 2014Assignee: Fujikura Ltd.Inventor: Akito Nishimura
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Patent number: 8559776Abstract: Provided is a ferrule which includes a positioning mechanism configured to position an optical fiber having a predetermined outer diameter, and a recess configured for an adhesive to be disposed therein and having a first inner wall from which a front end of the optical fiber portion positioned by the positioning mechanism is protrudable, and a second inner wall opposite to the first inner wall. A distance between the first inner wall and the second inner wall is less than or equal to four times the outer diameter of the optical fiber.Type: GrantFiled: September 9, 2010Date of Patent: October 15, 2013Assignee: Fujikura Ltd.Inventors: Tatsuya Ohta, Akito Nishimura, Terutake Kobayashi, Kunihiko Fujiwara
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Publication number: 20130266262Abstract: An optical path-changing member comprises a member main body which is made of a transparent material and in which a reflection section optically connecting the optical fiber to the light input and output end is formed, wherein the reflection section is a first lens having a concave shape when viewed from an incident direction and making light incident on the inside of the member main body from one of the optical fiber and the light input and output end be internally reflected in the member main body and directed to the other of the optical fiber and the light input and output end, a second lens having a convex shape toward the optical component is formed in a light incidence and emission surface of the member main body, that faces the optical component.Type: ApplicationFiled: April 2, 2013Publication date: October 10, 2013Applicant: FUJIKURA LTD.Inventors: Akito NISHIMURA, Shota NUMATA
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Patent number: 8422838Abstract: An optical path changing member is assembled at ends of optical fibers and placed to face a substrate including an optical input/output terminal having optical axes inclined with respect to optical axes of the ends. The optical path changing member is made of a transparent material and includes a member body having a reflection surface for optically connecting the ends to the optical input/output terminal. The member body has optical fiber insertion holes and an end placement portion to which the insertion holes are open and in which the end faces of the optical fibers are placed. The reflection surface is formed so that light entering from the end faces of the optical fibers into the member body will be internally reflected toward the optical input/output terminal in the member body. The end placement portion is filled with an adhesive by which the ends are fixed to the member body.Type: GrantFiled: March 21, 2012Date of Patent: April 16, 2013Assignee: Fujikura Ltd.Inventors: Tatsuya Ohta, Kunihiko Fujiwara, Akito Nishimura, Kenji Sasaki, Yukio Hayashi
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Patent number: 8408816Abstract: An optical connector, assembled to a front end of an optical fiber and attached to an optical component that is provided with an optical element having an optical axis different from that of the optical fiber, includes a main body having a connection end surface, and a reflective portion changing an angle of an optical path. At least one of a fitting protruding portion and a fitting recessed portion are provided so as to be capable of positioning the optical connector to the optical component by respectively fitting a fitted protruding portion and a fitted recessed portion provided on the optical component in each of a first region on the front end side and a second region on the opposite side thereto with the optical path interposed therebetween.Type: GrantFiled: March 18, 2010Date of Patent: April 2, 2013Assignee: Fujikura Ltd.Inventors: Kunihiko Fujiwara, Akito Nishimura, Yukio Hayashi
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Patent number: 8376633Abstract: An optical connector is comprised of a main body and a wall formed in the main body and having a wall face which has guiding slots curving at an angle of about 90 degrees or one or more optical fiber holes. Optical fibers inserted into the main body along the lateral direction are made curved by the guiding slots or the optical fiber holes toward photoelectric devices disposed on an upper or lower face thereof.Type: GrantFiled: May 31, 2007Date of Patent: February 19, 2013Assignee: Fujikara Ltd.Inventors: Akito Nishimura, Kunihiko Fujiwara
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Patent number: 8317411Abstract: A connector holder fixes an optical connector assembled at a leading end of an optical fiber to an optical module having a light input/output end so that the optical fiber and the light input/output end is optically connected. The connector holder is provided with a holding section for storing at least a part of the optical connector, and a cover section attached to the holding section to be freely opened and closed. The cover section is provided with a cover section main body, and a pressing section which presses the optical connector toward the optical module.Type: GrantFiled: November 22, 2011Date of Patent: November 27, 2012Assignees: Fujikura Ltd., NEC CorporationInventors: Kunihiko Fujiwara, Akito Nishimura, Kenji Sasaki, Yukio Hayashi, Kazuhiko Kurata, Takashi Yoshikawa, Junichi Sasaki
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Patent number: 8277129Abstract: Disclosed is an optical connector which terminates an optical fiber inside the optical connector. The optical connector includes a main body. The main body includes: a reflector for reflecting light; a groove portion formed in a top surface of the main body; an optical fiber insertion hole opened in the groove portion, the optical fiber being inserted in the optical fiber insertion hole; an optical fiber placement stage provided in the groove portion, a front end portion of the optical fiber being placed on the optical fiber placement stage. The groove portion includes the optical fiber insertion hole formed at a back inner surface of the groove. The optical fiber placement stage is formed by projecting from the side surface of the groove portion.Type: GrantFiled: December 22, 2009Date of Patent: October 2, 2012Assignee: Fujikura Ltd.Inventors: Takahiko Sabano, Akito Nishimura, Yukio Hayashi
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Patent number: 8277130Abstract: Disclosed is an optical connector which terminates an optical fiber inside the optical connector. The optical connector includes a main body. The main body includes: a reflector for reflecting light; a groove portion formed in a top surface of the main body; an optical fiber insertion hole opened in the groove portion, the optical fiber being inserted in the optical fiber insertion hole; an optical fiber placement stage provided in the groove portion, a front end portion of the optical fiber being placed on the optical fiber placement stage. The groove portion includes a front inner surface and a back inner surface which face each other in the longitudinal direction of the optical fiber insertion hole, and the optical fiber placement stage is separated away from the front and back inner surfaces.Type: GrantFiled: December 23, 2009Date of Patent: October 2, 2012Assignee: Fujikura Ltd.Inventors: Akito Nishimura, Takahiko Sabano, Yukio Hayashi
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Publication number: 20120183269Abstract: An optical path changing member is assembled at ends of optical fibers and placed to face a substrate including an optical input/output terminal having optical axes inclined with respect to optical axes of the ends. The optical path changing member is made of a transparent material and includes a member body having a reflection surface for optically connecting the ends to the optical input/output terminal. The member body has optical fiber insertion holes and an end placement portion to which the insertion holes are open and in which the end faces of the optical fibers are placed. The reflection surface is formed so that light entering from the end faces of the optical fibers into the member body will be internally reflected toward the optical input/output terminal in the member body. The end placement portion is filled with an adhesive by which the ends are fixed to the member body.Type: ApplicationFiled: March 21, 2012Publication date: July 19, 2012Applicant: FUJIKURA LTD.Inventors: Tatsuya OHTA, Kunihiko FUJIWARA, Akito NISHIMURA, Kenji SASAKI, Yukio HAYASHI
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Patent number: 8165432Abstract: An optical path changing member is assembled at ends of optical fibers and placed to face a substrate including an optical input/output terminal having optical axes inclined with respect to optical axes of the ends. The optical path changing member is made of a transparent material and includes a member body having a reflection surface for optically connecting the ends to the optical input/output terminal. The member body has optical fiber insertion holes and an end placement portion to which the insertion holes are open and in which the end faces of the optical fibers are placed. The reflection surface is formed so that light entering from the end faces of the optical fibers into the member body will be internally reflected toward the optical input/output terminal in the member body. The end placement portion is filled with an adhesive by which the ends are fixed to the member body.Type: GrantFiled: April 1, 2009Date of Patent: April 24, 2012Assignee: Fujikura Ltd.Inventors: Tatsuya Ohta, Kunihiko Fujiwara, Akito Nishimura, Kenji Sasaki, Yukio Hayashi
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Publication number: 20120063729Abstract: A connector holder fixes an optical connector assembled at a leading end of an optical fiber to an optical module having a light input/output end so that the optical fiber and the light input/output end is optically connected. The connector holder is provided with a holding section for storing at least a part of the optical connector, and a cover section attached to the holding section to be freely opened and closed. The cover section is provided with a cover section main body, and a pressing section which presses the optical connector toward the optical module.Type: ApplicationFiled: November 22, 2011Publication date: March 15, 2012Applicants: NEC CORPORATION, FUJIKURA LTD.Inventors: Kunihiko Fujiwara, Akito Nishimura, Kenji Sasaki, Yukio Hayashi, Kazuhiko Kurata, Takashi Yoshikawa, Junichi Sasaki