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11. 发明专利

JP2002006176A MULTICORE OPTICAL CONNECTOR PLUG 失效
公开(公告)号：JP2002006176A
公开(公告)日：2002-01-09
申请号：JP2000191610
申请日：2000-06-26
申请人： SANWA DENKI KOGYO CO LTD , NTT ADVANCED TECH KK
发明人： HIOKI KOSUKE , SUGITA ETSUJI
IPC分类号： G02B6/38
摘要： PROBLEM TO BE SOLVED: To provide a multicore optical adapter plug where a desired one is easily assembled with one operation only by inserting it into an adapter housing having a plug insert hole with a pitch corresponding to a connection adapter which is used. SOLUTION: This connector plug is provided with a plurality of adapter housing 2 where a plurality of plug insert holes 4 having various pitches 1 are opened, and a plurality of plugs 3 having a slide knob 3c formed into such profile as to be inserted into respective plugs insert holes 4. The adapter housing 2 and the plug 3 is inserted into the plug 3 are provided with engagement parts 7 and 12, and the plug 3 is inserted into plug insert hole 4 of the adapter housing 2 so that both engagement parts 7 and 12 can be engaged with each other for assembling.

12. 发明专利

JP2001246343A CLEANER FOR OPTICAL CONNECTOR 失效
公开(公告)号：JP2001246343A
公开(公告)日：2001-09-11
申请号：JP2000058814
申请日：2000-03-03
申请人： NTT ADVANCED TECH KK , TOYO CREATIVE TECHNOLOGY KK
发明人： MIYAKE YASUYO , FUKUHARA AI , NODA JUICHI , SUGITA ETSUJI , GOTO HITOSHI , IWAGANE ISAO , ARAIDA ISAO , TAKAOKA YUJI
IPC分类号： G02B6/36 , B08B1/00 , B08B1/02 , B08B11/00 , G02B6/38
摘要： PROBLEM TO BE SOLVED: To enable all users to conveniently use a cleaner and to house the same in a compact box. SOLUTION: The cleaner of an optical connector is formed by exposing a cleaning sheet 4 to the outside from a cleaning window 7 of a case 1. The cleaning sheet is taken up on a take-up pulley rotated at a specified pitch. The take-up pulley is rotated by a rotational drive mechanism 5 driven by a lever. The case 1 is closed at the outer peripheries of a first surface plate 1a and a second surface plate 1b with a peripheral wall 1c. The peripheral wall 1c is partly opened and the lever 6 is tiltably disposed in this aperture.

13. 发明专利

JP2001188145A GUIDE JIG FOR OPTICAL CONNECTOR CLEANING TOOL 失效
公开(公告)号：JP2001188145A
公开(公告)日：2001-07-10
申请号：JP37422799
申请日：1999-12-28
申请人： NTT ADVANCED TECH KK
发明人： MIYAKE YASUYO , NODA JUICHI , SUGITA ETSUJI
IPC分类号： B08B9/02 , B08B1/00 , G02B6/38
摘要： PROBLEM TO BE SOLVED: To provide a means which securely guide a cotton rod type optical connector for cleaning the ferrule end surface of an optical connector and the internal wall of a ferrule to the ferrule end surface in the sleeve in a clean state. SOLUTION: A guide jig 6 for an optical connector cleaning tool internally has a through hole that can penetrate the part of the optical connector cleaning tool which has a cleaning function; and the through hole has a hole diameter larger than the hole diameter of a corresponding adapter 4 or receptacle and is reduced in internal diameter by having a tapered structure 7 or stepped structure on the entrance side (where the optical connector cleaning tool 5 is inserted, and has an internal diameter which is large enough to insert the tip of a sleeve holder 3 corresponding to the through hole and an external diameter which is large enough to mount itself inside the receptacle on the entrance side (opposite from the entrance).

14. 发明专利

JP2001356242A ADAPTOR FOR CONVERSING FERRULE HAVING DIFFERENT DIAMETER AND METHOD FOR MANUFACTURING SUCH ADAPTOR 失效
公开(公告)号：JP2001356242A
公开(公告)日：2001-12-26
申请号：JP2000178828
申请日：2000-06-14
申请人： YKK CORP , NTT ADVANCED TECH KK
发明人： KOBAYASHI MASAYUKI , TANIGUCHI TAKESHI , NAGAHAMA HIDENOBU , TAKEDA HIDEKI , SUGITA ETSUJI
IPC分类号： C22C45/00 , C22C45/08 , C22C45/10 , G02B6/38
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable and inexpensive ferrule-conversing adaptor that has superior strength and wear resistance, little deformation or abrasion through repeated attaching and detaching of ferrules, and capability of accurately maintaining axial alignment between ferrules for a long time, and to provide a method for manufacturing such adaptor at a low cost with good productivity. SOLUTION: In the adaptor 1 for changing a ferrule having a different diameter, namely, the adaptor used in connecting optical connectors each having a different ferrule diameter, the adaptor consists of an amorphous alloy with at least a glass transition temperature region, desirably having a temperature range of 30 K or above. Such adaptor for conversing ferrules can be manufactured with good productivity at a low cost by die-casting or a metal mold molding method.

15. 发明专利

JPH03164704A FLOAT STRUCTURE OF PLUG-IN CONNECTOR 失效
公开(公告)号：JPH03164704A
公开(公告)日：1991-07-16
申请号：JP30318589
申请日：1989-11-24
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： IWANO SHINICHI , SUGITA ETSUJI , NAGASE AKIRA , KANAYAMA KAZUNORI
IPC分类号： G02B6/38
摘要： PURPOSE:To improve accuracy by fitting a fitting member having a float hole in the through-hole bored in a package, inserting the float stem part of a housing in alignment into the float hole and mounting a fixing member to the front end of the float stem part. CONSTITUTION:This structure has the through-hole 29 provided in the package 25, the disk-shaped member 30 bored with the float hole 33, a holding surface 26 consisting of one face of the housing 23, the shaft-like projecting part 27 which is projectingly provided integrally from this holding surface 26 and is inserted into the float hole 33, and the planar fixing member 28 of the outside diameter larger than the through-hole 29 fixed in the projecting part 27. The package 25 is sandwiched by the holding surface 26 and the fixing member and the housing 23 is so provided as to be held afloat to the package 25 by the spacing between the float stem part 35 formed in a part of the projecting part 27 and the float hole 33. The float holding structure of the good accuracy is thus obtd. with the simple and compact structure at the time of holding the package side housing afloat to the package.

16. 发明专利

JPH03131804A OPTICAL FIBER CONNECTION TERMINAL FOR OPTICAL CONNECTOR 失效
公开(公告)号：JPH03131804A
公开(公告)日：1991-06-05
申请号：JP26808889
申请日：1989-10-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： OGUCHI TAISUKE , NODA JUICHI , NAGASE AKIRA , SUGITA ETSUJI
IPC分类号： G02B6/36 , G02B6/26 , G02B6/38
摘要： PURPOSE:To stabilize optical coupling between fibers by coupling and fixing optical fibers, which are cut by the insertion of an optical control member, by pipe-shaped glass which has an internal diameter a little larger than the external diameter of the optical fibers and an external diameter a little smaller than the internal diameter of a flange part. CONSTITUTION:The optical control member 36 is inserted into the flange part 32 and the fibers 33a and 34a which are cut by the insertion of the optical control member 36 are coupled and fixed by the pipe-shaped glass 38 which has the internal diameter a little larger than the external diameter of the fibers 33a and 34a and the external diameter a little smaller than the internal diameter of the flange part 32. Then the jackets of parts of the optical fibers 33 and 34 which are inserted into the glass pipe 38 and a fitting part 31 are removed to expose the fibers 33a and 34a themselves. Therefore, the optical fiber 33 has the optical fiber 33a exposed entirely, the optical fibers 33a and 34a in the glass pipe 38 are adhered by the glass fiber, and the part of the optical fiber 34 where its jacket is not removed is adhered to the flange part 32. Consequently, the stable connection terminal which is incorporated in the optically coupled optical control member can be realized.

17. 发明专利

JPH0359547A OPTICAL FIBER AMPLIFIER 失效
公开(公告)号：JPH0359547A
公开(公告)日：1991-03-14
申请号：JP19420089
申请日：1989-07-28
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HORIGUCHI MASAHARU , SHIMIZU MAKOTO , YAMADA MAKOTO , SUGITA ETSUJI
IPC分类号： G02B6/00 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/17
摘要： PURPOSE:To improve the amplification efficiency of the optical amplifier by specifying the concn. of the erbium (Er) to be added to a single mode optical fiber of a quartz system to ' from the filter 12. Stimulating light sources 4, 4' are lighted and the respective stimulating light rays are made incident via a lens 3, a polarization beam splitter 9 and a dichroic mirror 5 and further a lens 3' and a connector 10 to the Er-added optical fiber 6. The concn. of the Er to be added is confined as low as to

18. 发明专利

JPH0220811A OPTICAL CONNECTOR LOCK 失效
公开(公告)号：JPH0220811A
公开(公告)日：1990-01-24
申请号：JP17057588
申请日：1988-07-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KANAYAMA KAZUNORI , SUGITA ETSUJI , IWANO SHINICHI , NAGASE AKIRA
IPC分类号： G02B6/38
摘要： PURPOSE:To easily and securely prevent a plug form coming out erroneously by providing a mechanism part for fixing an optical connector to a hood behind the plug and a structure part which covers a frame while the optical connector is fixed to the hood. CONSTITUTION:The optical connector lock 1 is set having lock claws 4 opposite the plug 10 and an optical fiber cord 13 is passed through a slit 5 and run through a through hole 2. Then the upper and lower flanks of the optical connector lock 1 are held and put close to the plug 10 from behind and the hood 12 is run between the lock claws 4 and through the through hole 2 to press the hood 12 by the upper and lower lock claws 4 and the internal flank of the through hole 2, so that the hood 12 deforms elastically. Further, the optical connector lock 1 is moved forth to before the plug 10 and the lock claws are inserted into the gap between the frame 11 and hood 12 under the guidance of a chamfered part 4'', thereby locking the optical connector while bringing the rear end of the frame 11 into contact with the internal bottom part of the lock 1. Consequently, the optical connector lock 1 locks the plug 10 to an adapter 15 to prevent the plug 10 from coming out erroneously.

19. 发明专利

JPH01232308A ASSEMBLING TOOL AND ASSEMBLING METHOD FOR OPTICAL CONNECTOR PLUG 失效
公开(公告)号：JPH01232308A
公开(公告)日：1989-09-18
申请号：JP5849888
申请日：1988-03-14
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGASE AKIRA , NODA JUICHI , SUGITA ETSUJI
IPC分类号： G02B6/36
摘要： PURPOSE:To easily adjust the direction of the main axis of an optical fiber by providing a ferrule fixing part which fixes a ferrule, an optical fiber fixing part which fixes the optical fiber and a turning member which mounts the optical fiber fixing part. CONSTITUTION:The optical fiber fixing part 3 is mounted to the turning member 4 and can rotate optical fiber 5 around its axis and, therefore, the direction of the main axis of the optical fiber 5 can be set in a prescribed direction by rotating the fiber while observing the end face of the optical fiber 5 projecting from the end face of, for example, the ferrule 2 with a microscope. The ferrule fitting part is held by a V-groove 1f and a press plate 1b and a key 1d is engaged with a keyway 2c, by which the ferrule is positioned with respect to the angle around the axis thereof. The ferrule is mounted in the specified direction in spite of the presence of a tolerance size in the width of the keyway 2c by tapering the front end of the key 1d and using a spring 1e.

20. 发明专利

JPS63231408A OPTICAL CONNECTOR 失效
公开(公告)号：JPS63231408A
公开(公告)日：1988-09-27
申请号：JP6437187
申请日：1987-03-20
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGASE AKIRA , SUGITA ETSUJI
IPC分类号： G02B6/38
摘要： PURPOSE:To obtain an optical connector which permits high-density packaging by providing a pair of ferrules fixed with ends of two optical fibers, an elastic sleeve and a spring for application of pressing force to the connector and specifying the pressing force, sleeve holding force, the length of a fitting part as well as the inside surface area and bending rigidity of the sleeve. CONSTITUTION:The following equation is required to be satisfied when the inside surface area of the sleeve 4 is designated as S, the pressing force of the ferrule 2 as FA and the sleeve holding force as FR: 2.8 +1.5 when the outside diameter of the ferrule is designated as D. The stable characteristics are thereby obtd. even if the outside diameter of the ferrule is set in a >=1mm and

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