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31. 发明专利

JPH10111434A OPTICAL FIBER CONNECTOR 失效
公开(公告)号：JPH10111434A
公开(公告)日：1998-04-28
申请号：JP28157296
申请日：1996-10-04
申请人： HIROSE ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIYAMA TAKASHI , SATOU SADATAKA , NAGASE AKIRA , IWANO SHINICHI , KOBAYASHI MASARU , HONDA RYUJI , MITACHI NARIYUKI
IPC分类号： G02B6/38
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber connector capable of easily cleaning the end faces of optical fibers together with ferrules. SOLUTION: This optical fiber connector is constituted by inserting an inside housing 7 having a cylindrical part 10 having a ferrule holding hole penetrated therein into the through-hole 2 of an external housing 2, inserting a pair of the ferrules 21 for holding the optical fibers into the ferrule holding hole from both sides and holding these two ferrules 21, 31 on the same axis via a sleeve 22 fitted onto both ferrules. The connection of the optical fibers to each other is thus mode possible. In such a case, the external housing 1 has a detaining arm part 3 for freely releasably detaining the internal housing 7. The cylindrical part 10 is detained to the rear end of the sleeve 22 in the pull-out direction of the internal housing 7 directly or via a member 16 connected to the cylindrical part 10.

32. 发明专利

JPH1068842A OPTICAL CONNECTOR 失效
公开(公告)号：JPH1068842A
公开(公告)日：1998-03-10
申请号：JP24400596
申请日：1996-08-28
申请人： HONDA TSUSHIN KOGYO , NIPPON TELEGRAPH & TELEPHONE
发明人： IWANO SHINICHI , NAGASE AKIRA , KOBAYASHI MASARU , HONDA RYUJI , MITACHI NARIYUKI , NAKANISHI ISAO , NAKANO TOSHIAKI , MOCHIDA FUMIAKI
IPC分类号： G02B6/38 , G02B6/40
摘要： PROBLEM TO BE SOLVED: To make it possible to easily insert a ferrule into the ferrule insertion hole of a housing without an angular deviation by providing the connector with a sleeve member having a collar part and a simple ferrule having guide grooves for guiding the passage of a pair of guide projections. SOLUTION: A mark 43 indicating the eccentric position of the simple ferrule 40 is aligned to the eccentric position of an MU type optical plug 10 inserted into the ferrule insertion hole 22 of the housing 20. The guide groove of the collar part 44a are aligned to a pair of the guide grooves at the end face of a cylindrical sleeve part. The split sleeve 31 is mounted in this state at the simple ferrule 40 and is inserted into the ferrule insertion hole 22 of the housing 20. At this time, the simple ferrule 40 is insertable deep into the deepest part of the ferrule insertion hole 22. A pair of elastic detaining pieces of the sleeve 30 with the detaining pieces fitted and fixed to the inner side of the ferrule insertion hole 22 of the housing 20 are engaged with the collar part, then, the simple ferrule 40 is attachably and detachably fixed to the sleeve 30 with the detaining pieces.

33. 发明专利

JPH0996739A PLUG DETACHMENT KNOB 失效
公开(公告)号：JPH0996739A
公开(公告)日：1997-04-08
申请号：JP27471295
申请日：1995-09-28
申请人： MIWA DENKI KOGYO KK , NIPPON TELEGRAPH & TELEPHONE , HIROSE ELECTRIC CO LTD , HONDA TSUSHIN KOGYO
发明人： KAWAHARA AKIRA , SHINAGAWA YUJI , NAGASE AKIRA , IWANO SHINICHI , KANAYAMA KAZUNORI , KATO KUNIHARU , MATSUMOTO TATEOMI , NISHIYAMA TAKASHI , NAKANO TOSHIAKI , OKAMURA HIROMASA
IPC分类号： G02B6/38
摘要： PROBLEM TO BE SOLVED: To use a plug detachment knob for an optical connector in common for respective plugs, to make the plug freely insertable, holdable and detachable to/from a connection adapter and to manufacture the plug at a low cost. SOLUTION: A plug frame for which a ferrule 11 is disposed at an axial center is formed freely insertably and holdably in the connection adapter 2 by engaging an engaging projection part 21a at the tip of an engaging piece 21 provided with a spring property projectingly provided inside the connection adapter 2 to an engaging groove part formed on the outer side of the tip. Further, a knob main body 1 is formed so as to be externally fitted freely detachably in an axial direction to the plug frame and the engagement release mechanism 7 of the engagement projection part 21a and the engaging groove part is provided on the tip part of the knob main body 1a so as to freely insert, hold and detach the knob main body 1a to/from the connection adapter 2 in the state of being externally mounted to the plug 9.

34. 发明专利

JP2504852B2 失效
公开(公告)号：JP2504852B2
公开(公告)日：1996-06-05
申请号：JP4954690
申请日：1990-03-02
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGASE AKIRA , KANAYAMA KAZUNORI , IWANO SHINICHI , SUGITA ETSUJI
IPC分类号： G02B6/36

35. 发明专利

JPH0894841A OPTICAL ATTENUATOR AND ITS PRODUCTION 失效
公开(公告)号：JPH0894841A
公开(公告)日：1996-04-12
申请号：JP23266394
申请日：1994-09-28
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TAKEUCHI YOSHIAKI , KATO KUNIHARU , NAGASE AKIRA , IWANO SHINICHI , HIRAYAMA MAMORU
IPC分类号： G02B6/00 , G02B6/26 , G02B6/36
摘要： PURPOSE: To obtain an inexpensive optical attenuator which is free from the fluctuation in a light attenuation quantity by axis misalignment and is easily producible by setting the outside diameter of the clad of an optical fiber at the same size as the outside diameter of the ferrule of an optical connector. CONSTITUTION: This optical attenuator consists of a core 11 and the clad 12 in common use as the ferrule having the same outside diameter as the outside diameter of the conventional zirconia ferrule having a refractive index difference from the core 11 and is provided with a filter 13 for optical attenuation within a groove 14 so as to shut off the core 11. The optical attenuator is produced by forming a preform similar to the product in the ratio of the outside diameter of the core to the outside diameter of the conventional product and drawing and stretching the preform in the same manner as for the general optical fibers. Then, the technique for precise molding of the optical fiber is applicable as it is and the drastic cost reduction is possible as the continuous production is possible. Since there is no combination of the ferrule made of, for example, the zirconium and the optical fiber like heretofore, the production is simplified and the factor for fluctuation of the light attenuation quantity decreases.

36. 发明专利

JPH07311118A INSPECTION OF REFLECTION ATTENUATION OF OPTICAL CONNECTOR 失效
公开(公告)号：JPH07311118A
公开(公告)日：1995-11-28
申请号：JP10266194
申请日：1994-05-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KANAYAMA KAZUNORI , KATO KUNIHARU , IWANO SHINICHI , NAGASE AKIRA
IPC分类号： G01M11/00 , G01M11/02
摘要： PURPOSE:To provide an inspection method the reflection attenuation of an optical connector that is simple and reliable even when the form of an optical connector available for the mutual connection of optical fiber is changed. CONSTITUTION:Two sets of reference optical cord for measurement are used for the title method. An optical connector 1a for a reference optical cord Al for measurement and an optical connector 10a for a reference optical cord A10 for measurement can be coupled respectively, and an optical connector 2b for a reference optical cord B2 and an optical connector 20a for a reference optical cord B20 can be also coupled respectively, further an optical connector 30a on the left end of an optical cord 3 to be measured and an optical connector 1a for a reference optical cord A1 for measurement can be coupled respectively and an optical connector 31a on the right end of the cord 3 and an optical connector 2a of a reference optical cord B2 for measurement can be coupled respectively. Therefore, the optical connectors can be housed without change and the optical fiber can be fixed without connection of ferrule only, so that testing can be performed easily.

37. 发明专利

JPH0682655A ADAPTER FOR OPTICAL CONNECTOR 失效
公开(公告)号：JPH0682655A
公开(公告)日：1994-03-25
申请号：JP26315592
申请日：1992-09-04
申请人： HONDA TSUSHIN KOGYO , NIPPON TELEGRAPH & TELEPHONE , HIROSE ELECTRIC CO LTD , MIWA DENKI KOGYO KK
发明人： OKAMURA HIROMASA , NAKANO TOSHIAKI , KANAYAMA KAZUNORI , IWANO SHINICHI , ANDO YASUHIRO , NAGASE AKIRA , MATSUMOTO TATEOMI , NISHIYAMA TAKASHI , FURUKAWA TOSHIAKI , KAWAHARA AKIRA
IPC分类号： G02B6/36 , G02B6/38
摘要： PURPOSE:To simply and firmly assemble adapter elements without any extra facility and to reduce the size by snapping and coupling the engaging means of a couple of adapter elements. CONSTITUTION:The same adapter elements 60 are arranged facing each other and a sleeve holder 50 which has an array sleeve internally is held between them to assemble and fix the elements. Each elements 60 has an engaging means for fixing both the adapter elements 60 by mutual snap coupling. Namely, an elastic engagement piece is intruded into a recessed part and an engagement projection part and an engagement recessed part are engaged by snapping to assemble and fix the elements. Therefore, the pair of adapter elements 60 are set facing each other and only engaged with each other to snap and engage the engagement means, so that the assemblage can easily and firmly be fixed. Consequently, the assembly time is shortened and the overall size of the adapter is reducible.

38. 发明专利

JPH05100128A NON-REFLECTION OPTICAL TERMINAL PLUG 失效
公开(公告)号：JPH05100128A
公开(公告)日：1993-04-23
申请号：JP25929791
申请日：1991-10-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGASE AKIRA , ANDO YASUHIRO , IWANO SHINICHI , KANAYAMA KAZUNORI
IPC分类号： G02B6/36 , G02B6/02
摘要： PURPOSE:To obtain the non-reflection optical terminal plug which has high reliability and is small and economical by polishing the rear ends of the capillary at the rear end of a zirconia ferrule and the optical fiber built therein so as to incline with an optical axis. CONSTITUTION:The capillary 13 is inserted into the rear end of the zirconia ferrule 10. The rear ends of the capillary 13 existing at the rear end of the zirconia ferrule 10 and the optical fiber 14 built therein are polished so as to incline at a prescribed angle or above with the optical axis. Namely, the front end of the ferrule 10 is formed to a projecting spherical shape and the rear end of the ferrule is polished diagonally with the optical axis, by which this ferrule 1 is completed. The capillary 13 is previously inserted into the rear end of the ferrule and an extremely thin adhesive layer merely exists between the fine hole of the capillary 13 and the optical fiber 14 and, therefore, the optical fiber end face is well polished by an ordinary polishing method. The polishing operation is made easier than for zirconia by constituting the capillary 13 of glass.

39. 发明专利

JPH0545540A OPTICAL CONNECTOR PLUG STRUCTURE 失效
公开(公告)号：JPH0545540A
公开(公告)日：1993-02-23
申请号：JP22861891
申请日：1991-08-14
申请人： NIPPON TELEGRAPH & TELEPHONE , HIROSE ELECTRIC CO LTD
发明人： KANAYAMA KAZUNORI , NAGASE AKIRA , IWANO SHINICHI , ANDO YASUHIRO , MATSUMOTO TATEOMI , NISHIYAMA TAKASHI
IPC分类号： G02B6/38 , G02B6/40
摘要： PURPOSE:To prevent a ferrule from swinging and to reduce the size of the whole optical connector plug by bringing the frange part of the holder of a ferrule into contact with the step part of a plug frame via a washer with the energizing force of a spring and fixing the ferrule. CONSTITUTION:The washer 16a, ferrule 16, and spring 17 are inserted into a plug frame 14 and a stop ring 15 is inserted into a plug frame 12; and the detaining projection part 24 of the stop ring 15 is engaged with the engagement part 23 of the plug frame 12 and the spring 17 is compressed by the stop ring 15. Then the flange part 27 of the holder 26 of the ferrule 16 is brought into contact with the step part 14a of the plug frame 12 via the washer 16a with the energizing force of the spring 17 and the ferrule 16 is fixed. Namely, even when the step part 14a is small, the washer 16a collides with the step part 14a, so the ferrule 16 is supported sufficiently. Therefore, even when the whole body is made small in size, normal fitting is possible.

40. 发明专利

JPH0474611A METHOD OF FORMING ELASTIC BODY ON TIP PART OF ROD-SHAPED SHAFT AND JIG USED THEREFOR 失效
公开(公告)号：JPH0474611A
公开(公告)日：1992-03-10
申请号：JP18723290
申请日：1990-07-17
申请人： NIPPON TELEGRAPH & TELEPHONE , HONDA TSUSHIN KOGYO
发明人： IWANO SHINICHI , MARUNO TORU , NAGASE AKIRA , KANAYAMA KAZUNORI , NAKANO TOSHIAKI , TOKUTOME KAZUHIRO
IPC分类号： B08B1/00 , B29C33/12 , B29C33/38 , B29C37/02 , B29C39/10 , B29C39/22 , B29C39/26 , B29L31/36
摘要： PURPOSE:To realize an elastic body accurately cheaply by insertion-holding a shaft on a mold having a through hole with the same diameter as a rod-shaped shaft and the hole of a large diameter part, and aligning it by a jig, and then pouring an elastic material thereinto in the form of placing the large diameter part upward, finally, removing residual elastic material therefrom after curing. CONSTITUTION:A shaft 4 is inserted into a mold main body that has a through hole 11 with nearly the same diameter as the rod-shaped shaft 4 and a large diameter part 12 at the tip part thereof, and then the tip part 41 of the shaft 4 is aligned by the projection 21 of a jig 2 from the mold surface 13 on the side of the large diameter part 12 to a predetermined position. After removing the jig 2 therefrom and mounting an encircling jig 3 thereon, an elastic material 5 is poured and then cured therein in the form of placing the mold surface 13 upward. In order to shorten the curing time, the elastic material 5 is of an optical setting type, and lights 6 are irradiated thereonto. The jig 3 is disengaged and residual elastic body 53 is severed off by a cutting jig 7, furthermore, the rear end of the shaft 4 is extruded from the underside of the through hole 11, thereby integrally dislodging the shaft 4 and the elastic body tip part 51. By the reasons mentioned above, the outer diameter and thickness of the elastic body tip part 51 can be controlled accurately, and the manufacturing time becomes possible to be shortened, and the cost can also be made low thereby.

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