Patents by Inventor Ryo Nagase
Ryo Nagase 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: 20100226610Abstract: An optical connector (10) of the present invention includes housing position correction means for correcting displacement of relative positions between plug and jack housings (13, 16); housing connection means (20, 22) which engage with each other to connect the plug and jack housings (13, 16) to each other so that a coupling state between first and second optical fibers (11, 14) can be maintained; connection release means (26, 27) capable of releasing the connected state by the housing connection means (20, 22); and frame position correction means for correcting displacement of relative positions between a frame (21) of an optical plug (12) and a connection block (34) of an optical jack (15).Type: ApplicationFiled: September 5, 2007Publication date: September 9, 2010Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITEDInventors: Masaru Kobayashi, Ryo Nagase, Yoshiteru Abe, Yuichi Koreeda
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Publication number: 20100074581Abstract: A semiconductor submodule includes a substrate (10) as a first substrate having at least one hole, and at least one optical semiconductor device (16) disposed such that light travels through the hole, a substrate (11) as a second substrate having a semiconductor device (26) for driving the optical semiconductor device (16) and amplifying signals and an electrical connector (28) for inputting and outputting electrical signals from and to the outside, and a flexible cable (12) electrically connecting an end of the substrate (10) and an end of the substrate (11) and allowing the first substrate to be folded opposite to the surface on which the optical semiconductor device is mounted.Type: ApplicationFiled: February 4, 2008Publication date: March 25, 2010Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hiromasa Tanobe, Yoshihisa Sakai, Masaru Kobayashi, Ryo Nagase
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Publication number: 20100014813Abstract: A receptacle (20) detachably accommodating a connector plug (34) connected to optical fibers (32) is rotatably supported by a shaft (14) provided in an installation table (10). The receptacle (20) is biased by a leaf spring (16) for biasing opposite ends of the shaft (14) in one direction. A locking/unlocking mechanism for selectively locking or unlocking the receptacle (20) connected with the connector plug (34) relative to the installation table (10) and a locking mechanism fixing portion (12) includes a locking nib (30Ra) of a lock releasing button (30R), a locking nib (30La) of a lock releasing button (30L), locking nib receiving portions (12na, 12nb) and a coil spring (31).Type: ApplicationFiled: February 1, 2008Publication date: January 21, 2010Applicant: YAMAICHI ELECTRONICS CO., LTD.Inventors: Toshiyasu Ito, Hiromasa Tanobe, Yoshihisa Sakai, Masaru Kobayashi, Ryo Nagase
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Publication number: 20080273842Abstract: An optical connector comprising: first and second movable members 7, 8 held on an optical connector body 6 to be axially movable in a longitudinal direction; locking means for locking the first and second movable members when the first movable member is located at a predetermined locking position in a tip part of the optical connector body, and integrally moving the first and second movable members; and unlocking means formed in the optical connector body 6, and including a locking acting portion which acts on the locking means when the first movable member is located rearwardly of a predetermined unlocking position in a rear part of the optical connector body, to unlock the first and second movable members, and which locks the first and second movable members when the first movable member is located forwardly of the unlocking position, and a second movable member hooking portion 10 for inhibiting rearward movement of the second movable member after the first and second movable members are unlocked, and whereType: ApplicationFiled: August 30, 2006Publication date: November 6, 2008Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, NTT ADVANCED TECHNOLOGY CORPORATIONInventors: Hiroshi Tanaka, Mitsuo Kama, Hiroshi Aoyama, Yasuo Oda, Ryo Nagase, Hideki Ishihara, Fumihiro Ashiya, Shinichi Iwano
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Patent number: 7261471Abstract: There is provided an optical connector device which prevents leakage of light until right before connectors are connected to each other and is small-sized by a reduction in space for housing shutters. The optical connector device is an optical connector device comprising a first optical connector and a second optical connector. When shutters for shutting out light from the optical connectors are collided with each other, the shutters move to positions where they do not shut out the light. Therefore, the first optical connector and the second optical connector are connected to each other. After moving, the shutter of the first optical connector and the shutter of the second optical connector are inserted into the second optical connector while remaining contacting each other.Type: GrantFiled: March 1, 2006Date of Patent: August 28, 2007Assignees: Hirose Electric Co., Ltd., Nippon Telegraph and Telephone Corporation, NTT Electronics Corporation, Japan Aviation Electronics Industry LimitedInventors: Masahiro Tsuchida, Yoshiteru Abe, Masaru Kobayashi, Ryo Nagase, Koichi Arishima, Yuichi Koreeda, Akihiro Onogawa
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Publication number: 20070137255Abstract: A method of manufacturing an incorporated ferrule (13) with attenuation optical fiber comprising the step of cutting off a long capillary with an attenuation optical fiber (6) into a plurality of short capillaries (12) with attenuation optical fiber of specified lengths, and polishing the end faces (12a) and (12b) of the short capillaries (12) with attenuation optical fiber.Type: ApplicationFiled: January 28, 2003Publication date: June 21, 2007Inventors: Taisei Miyake, Susumu Ohneda, Keiko Shiraishi, Hirckazu Takeuchi, Nobuo Funabiki, Ryo Nagase, Shuichi Yanagi, Shinichi Iwano
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Publication number: 20070059612Abstract: A black coating composition which gives a highly adhesive resin black matrix that exhibits a high OD value which was able to be attained only by metal thin film black matrices is disclosed. The black coating composition comprises as indispensable components a titanium nitride oxide and a resin. The X-ray intensity ratios R1 and R2 of the titanium nitride oxide represented by the Equations (1) and (2) below, respectively, satisfy the relationships represented by Formulae (3) and (4)below: R1=I3/{I3+1.8(I1+1.8I2)}??(1) R2=I2/I1??(2) R1>0.70??(3) 0.85<R2<1.80??(4) wherein I1 represents the maximum diffraction intensity of the titanium nitride oxide when the angle of diffraction 2?, determined by using CuK? line as the X-ray source, is 25° to 26°, I2 represents the maximum diffraction intensity of the titanium nitride oxide when the angle of diffraction 2? is 27° to 28°, and I3 represents the maximum diffraction intensity of the titanium nitride oxide when the angle of diffraction 2? is 36° to 38°.Type: ApplicationFiled: October 14, 2004Publication date: March 15, 2007Applicant: TORAY INDUSTRIES, INC.Inventors: Masahiro Yoshioka, Ryo Nagase, Masaya Tsujii, Masuichi Eguchi
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Patent number: 7090409Abstract: An optical functioning component has a tubular housing with a front end side having substantially the same shape as that of a front end of a removable plug housing of an optical connector plug. A rear end side of the tubular housing has a shape configured for connection to the optical connector plug when the plug housing is removed from the optical connector plug. A ferrule is provided on the front end side of the tubular housing and has a mechanism capable of attenuating, cutting-off, reflecting or absorbing a specific wavelength of light. An optical connection sleeve is connected to an end of the ferrule. A frame supports the ferrule and the optical connection sleeve and is mounted in the tubular housing for undergoing axial movement therein by a preselected amount.Type: GrantFiled: April 14, 2003Date of Patent: August 15, 2006Assignee: Nippon Telegraph and Telephone Corporation and Seikoh Giken Co., Ltd.Inventors: Masahiro Nakajima, Kouji Minami, Junji Taira, Shin Sumida, Ryo Nagase, Syuichi Yanagi
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Publication number: 20060147156Abstract: There is provided an optical connector device which prevents leakage of light until right before connectors are connected to each other and is small-sized by a reduction in space for housing shutters. The optical connector device is an optical connector device comprising a first optical connector and a second optical connector. When shutters for shutting out light from the optical connectors are collided with each other, the shutters move to positions where they do not shut out the light. Therefore, the first optical connector and the second optical connector are connected to each other. After moving, the shutter of the first optical connector and the shutter of the second optical connector are inserted into the second optical connector while remaining contacting each other.Type: ApplicationFiled: March 1, 2006Publication date: July 6, 2006Applicants: Hirose Electric Co., Ltd., Nippon Telegraph and Telephone Corporation, NTT Electronics Corporation, Japan Aviation Electronics Industry, LimitedInventors: Masahiro Tsuchida, Yoshiteru Abe, Masaru Kobayashi, Ryo Nagase, Koichi Arishima, Yuichi Koreeda, Akihiro Onogawa
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Publication number: 20050201708Abstract: An object of the present invention is to provide a method for manufacturing a bared optical fiber having a good end surface of a coating when the coating of the coated optical fiber is removed, and a device for manufacturing the same. To achieve the above object, according to the invention, a laser beam is applied to an coated optical to fuse the coating or work the coating in other manners, if a coating material has a lower melting point as compared with the material of the bared optical fiber to remove the coating, whereby a bared optical fiber is manufactured. In addition, a cyanogen gas generated when the coating of the coated optical fiber is fused or worked in other manners is decomposed by ozone, thereby being made harmless.Type: ApplicationFiled: March 14, 2003Publication date: September 15, 2005Inventors: Koichi Arishima, Yoshi Kurosawa, Masaru Kobayashi, Mamoru Hirayama, Ryo Nagase
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Patent number: 6937808Abstract: An optical interconnection apparatus which is very easy to handle and does not cause excessive bending and breakage of the optical fibers when connecting with other optical apparatus is provided. The optical interconnection apparatus includes a base sheet and plural optical fibers two-dimensionally routed on the base sheet via an adhesive layer. The optical fibers form a routing pattern having at least a straight part, a crossing part, a curved part or a fiber pitch changing part. The apparatus further includes another base sheet this is adhered on the said routed optical fibers. The two base sheets have a different sizes so that one of the base sheets does not exist in the vicinity of the edge of the other base sheet at which the optical fibers are outwardly extended.Type: GrantFiled: April 29, 2003Date of Patent: August 30, 2005Assignees: Tomoegawa Paper Co., Ltd., Nippon Telegraph and Telephone CorporationInventors: Ritsu Kawase, Kyoichi Sasaki, Masayoshi Suzuki, Tatsushi Kobayashi, Ryo Nagase, Mamoru Hirayama
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Patent number: 6886990Abstract: An optical connector has a ferrule comprises of a cylindrical body for supporting an optical fiber, and a flange member having an end portion connected to a first end of the cylindrical body and a flange part projecting from the end portion. A holding member supports the ferrule and has an engaging part. A rotation positioning part is formed in the flange part of the flange member for positioning the flange part relative to the holding member to provide a first clearance between the rotation positioning part and the engaging part of the holding member for restricting rotation of the ferrule about the fiber optical axis relative to the holding member. A rotation allowing part is formed in the flange part of the flange member and spaced from the engaging part of the holding member to provide a second clearance therebetween greater than the first clearance for allowing rotational movement of the ferrule so as to permit the ferrule to incline in a direction transverse to an axis of the optical connector.Type: GrantFiled: May 8, 2003Date of Patent: May 3, 2005Assignees: Seiko Instruments Inc., Nippon, Telegraph and Telephone Corporation, Sanwa Denki Kogyo Co., Ltd.Inventors: Junji Taira, Kouji Minami, Ryo Nagase, Syuichi Yanagi, Shuichiro Inagaki, Taisei Miyake, Yuji Shinagawa, Masaji Suwabe, Hidekazu Onouchi
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Publication number: 20040017982Abstract: An optical functioning component in which strength is maintained while miniaturization is achieved and a number of parts can be decreased to reduce a cost is provided. In an optical functioning component including an attenuation ferrule provided on its front end side and having an attenuation mechanism, an optical connection sleeve for holding a rear end of the ferrule, a frame for holding the ferrule and the optical connection sleeve and a housing for holding the frame so that the frame can move axially and freely by a predetermined amount, a front end side of the housing has a roughly equal shape to a front end of a plug housing of an optical connector-plug connectable to an optical connector-adaptor engaged with the former front end side, and a rear end of the housing has a shape that the optical connector-plug with the plug housing removed can engage.Type: ApplicationFiled: April 14, 2003Publication date: January 29, 2004Inventors: Masahiro Nakajima, Kouji Minami, Junji Taira, Shin Sumida, Ryo Nagase, Syuichi Yanagi
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Publication number: 20040013392Abstract: An optical interconnection apparatus which is very easy to handle and does not cause excessive bending and breakage of the optical fibers when connecting with other optical apparatus is provided. The optical interconnection apparatus comprises a base sheet, plural optical fibers two-dimensionally routed on said base sheet via an adhesive layer so as to form a routing pattern having at least a straight part, a crossing part, a curved part or a fiber pitch changing part, and another base sheet adhered on said routed optical fibers, wherein said two base sheets have each a different size and one of said base sheets does not exist in the vicinity of the edge of the other base sheet at which the optical fibers are outwardly extended.Type: ApplicationFiled: April 29, 2003Publication date: January 22, 2004Inventors: Ritsu Kawase, Kyoichi Sasaki, Masayoshi Suzuki, Tatsushi Kobayashi, Ryo Nagase, Mamoru Hirayama
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Publication number: 20030215191Abstract: Provided is a PC connector to be removed of useless stress during attached/detached thus being stably attached/detached. A flange part is provided in a polygonal or disk form circumferentially projecting on the flange member at a tip side thereof. In a holding part holding the flange member, an engaging part is formed axially of the optical fiber and in a predetermined engaging width. The flange part has a predetermined clearance to the engaging part at an axial tip side thereof. A rotation positioning part restricts a movement in rotational direction of the flange part. A rotation allowing part is provided to form, on a rear-end side of the rotation positioning part, a clearance greater than the clearance of between the rotation positioning part and the engaging part.Type: ApplicationFiled: May 8, 2003Publication date: November 20, 2003Inventors: Junji Taira, Kouji Minami, Ryo Nagase, Syuichi Yanagi, Shuichiro Inagaki, Taisei Miyake, Yuji Shinagawa, Masaji Suwabe, Hidekazu Onouchi
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Patent number: 6170995Abstract: In order to provide a ferrule for an optical-fiber connector used for good organization of an optical communication network, the ferrule for an optical-fiber connector is made of a crystallized glass having a composition which consists essentially of, by weight percent, 60-70% of SiO2, 16-25% of Al2O3, 1.5-3% of Li2O, 0.5-2.5% of MgO, 1.3-4.5% of TiO2, 0.5-3% of ZrO2, 2-6.5% of TiO2+ZrO2, 1-5.5% of K2O, 0-7% of ZnO, and 0-3% of BaO. The crystallized glass includes 30-70 volume % precipitation of &bgr;-spodumene solid solution or &bgr;-quartz solid solution having an average grain size not greater than 2 &mgr;m. In addition, the crystallized glass has a bend strength of 200 MPa or more and a thermal expansion coefficient of −10˜50×10−7/° C. at a temperature between −50 and 150° C.Type: GrantFiled: July 23, 1999Date of Patent: January 9, 2001Assignees: Nippon Telegraph and Telephone Corporation, NEC Corporation, Nippon Electric Glass Co., Ltd.Inventors: Seiko Mitachi, Ryo Nagase, Yoshiaki Takeuchi, Takashi Tanabe, Akihiko Sakamoto, Hirokazu Takeuchi, Masayuki Ninomiya, Katsumi Inada
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Patent number: 5887095Abstract: An optical receptacle includes a housing having a base end and a nose end. From the base end of the housing is fitted the first ferrule. A split sleeve is provided in the housing. In the split sleeve is fitted the second ferrule of an optical fiber connector plug to be connected to the nose base side of the housing so that the first and second ferrules are aligned with each other. At the base end of the housing are provided first hook portions for holding the first ferrule while at the nose end are provided a fitting portion for fitting an optical fiber connector and second hook portions for holding the optical fiber connector plug in the fitting position thereof. The housing includes an inner part and an outer part having fixed therein the inner part. The inner part is composed of the first and second hook portions integrally molded. The outer part holds the optical fiber connector plug and hold therein the inner part fixedly.Type: GrantFiled: March 26, 1998Date of Patent: March 23, 1999Assignee: Nippon Telegraph & Telephone CorporationInventors: Ryo Nagase, Shin-ichi Iwano
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Patent number: 5841926Abstract: Disclosed are optical fibers for optical attenuation comprising a core and a cladding, wherein the cladding comprises two or more parts different from each other in their refractive indices and/or the attenuating dopant existence. By using the optical fibers for optical attenuation of the present invention, an optical attenuator which can effectively reduce the effect of cladding mode upon coupling of optical fibers and is excellent in characteristic stability can be manufactured at a low cost.Type: GrantFiled: December 27, 1996Date of Patent: November 24, 1998Assignees: Nippon Telegraph and Telephone Corporation, Showa Electric Wire & Cable Co., Ltd.Inventors: Yoshiaki Takeuchi, Ryo Nagase, Seiko Mitachi, Yuichi Morishita, Akira Kumagai, Yumi Ariga, Kenichi Muta, Kazunari Sugi, Masashi Saijo
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Patent number: 5774611Abstract: An optical receptacle includes a housing having a base end and a nose end. From the base end of the housing is fitted the first ferrule. A split sleeve is provided in the housing. In the split sleeve is fitted the second ferrule of an optical fiber connector plug to be connected to the nose base side of the housing so that the first and second ferrules are aligned with each other. At the base end of the housing are provided first hook portions for holding the first ferrule while at the nose end are provided a fitting portion for fitting an optical fiber connector and second hook portions for holding the optical fiber connector plug in the fitting position thereof. The housing includes an inner part and an outer part having fixed therein the inner part. The inner part is composed of the first and second hook portions integrally molded. The outer part holds the optical fiber connector plug and hold therein the inner part fixedly.Type: GrantFiled: March 6, 1996Date of Patent: June 30, 1998Assignee: Nippon Telegraph and Telephone CorporationInventors: Ryo Nagase, Shin-ichi Iwano
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Patent number: 5694506Abstract: When plug is fitted to adapter, optical fiber is inserted to an alignment hole for the optical fiber. By providing a taper at the entrance thereof, even if the tip of the optical fiber is deviated from the central position, the deviation is absorbed to make it possible for the optical fiber to be inserted smoothly. When two plugs is fitted to adapter, the tip of one optical fiber is confronted with the other one in the alignment hole, and excessive length L.sub.1 -L.sub.2 is pushed into the two optical fiber-bending spaces with a suitable distribution, thus the optical fiber buckles therein. The end face of the optical fiber is subjected to flat surface-polishing, removal of ripples after being cleaved, or chamfer grinding after being cleaved. The buckling portion of the optical fiber is coated with carbon or the like.Type: GrantFiled: March 11, 1996Date of Patent: December 2, 1997Assignee: Nippon Telegraph and Telephone CorporationInventors: Masaru Kobayashi, Shin'ichi Iwano, Ryo Nagase, Seiko Mitachi, Yoshiaki Takeuchi, Shuichiro Asakawa