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11. 发明专利

JPH04199017A OPTICAL MATRIX SWITCH 失效
公开(公告)号：JPH04199017A
公开(公告)日：1992-07-20
申请号：JP33201890
申请日：1990-11-29
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： TAMAKI YASUHIRO , YOKOSUKA HIROSHI , TOMITA NOBUO , TAKASUGI HIDETOSHI
IPC分类号： G02B26/08 , G02B6/35
摘要： PURPOSE:To enable accurate connection between plugs by inserting a positioning pin, provided at a head side elevation body around a movable plug, into a reference hole on the end face plate side at the time of moving the movable plug to a desired fixed plug so as to perform positioning with certain accuracy prior to highly accurate positioning performed by a positioning means. CONSTITUTION:A positioning pin 5 performs positioning in the Z direction with comparatively rough accuracy prior to accurate positioning performed by a positioning means 6. This positioning pin 5 is formed to protrude slightly longer than the fitting pin of a movable plug 17 and also to be fittingly inserted into a reference hole 1d bored on the end face plate 1a side. The positioning means 6 performs the accurate Z-direction positioning of the movable plug 17 in relation to the fixed plug 7, and that this positioning is highly accurate one performed after the position confirmation made by the positioning pin 5 to a certain degree. The movable plug 17 can be thereby connected accurately to an optional fixed plug 7, and the damage or the like of the plug caused by a connection error can be prevented effectively.

12. 发明专利

JP2001243842A DISCRIMINATION TAG FOR COMMUNICATION CABLE 失效
公开(公告)号：JP2001243842A
公开(公告)日：2001-09-07
申请号：JP2000053940
申请日：2000-02-29
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE , SUMITOMO ELECTRIC INDUSTRIES
发明人： SUZUKI RYOJI , OHASHI KEIJI , URUNO SHIGENORI , YAGI YUTAKA , TOMITA NOBUO , SAITO KAZUTO , ITO TETSUYA
IPC分类号： G02B6/00 , G06K19/07 , H01B7/36 , H01B11/00
摘要： PROBLEM TO BE SOLVED: To provide a split-type discrimination tag attached to an arbitrary portion of a communication cable that may be easily disassembled as needed but not split by an inadvertent external force. SOLUTION: A split-type discrimination tag 10 comprises one complementary tag member 12 with a discrimination symbol 18 inscribed on its surface, and the other complementary tag member 14 for engaging the one tag member 12 to hold a communication cable 16. Either of the tag members 12, 14 is provided with a linear housing groove 14b for retaining a communication cable 16. The both complementary tag members 12, 14 are engaged with the communication cable 16 inserted in the linear groove 14b, thus fixed to the communication cable 16. Either side of the tag members 12, 14 is provided with engaging claws 12a, and the other with engaging grooves 14a.

13. 发明专利

JPH09152560A OPTICAL SWITCH DEVICE 失效
公开(公告)号：JPH09152560A
公开(公告)日：1997-06-10
申请号：JP20867496
申请日：1996-08-07
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： FURUKAWA TORU , NOMURA YOSHIKAZU , FURUKAWA HIROSHI , NAKAO NAOKI , TOMITA NOBUO
IPC分类号： G02B6/38 , G02B6/35 , G02B6/36 , G02B26/08
摘要： PROBLEM TO BE SOLVED: To provide the switch device which enables high-precision positioning, reduces the connection loss of both connected optical fibers, and maintains stable connection characteristics for a long period and is capable of high-speed switching. SOLUTION: This device connects and switches a moving-side optical fiber 16 mounted on a moving base 31, moving in a container 12 filled with refractive index matching liquid 13 by a ball screw 38 as a moving means, to plural fixed- side optical fibers 15 arrayed and fixed on an optical fiber support base 14 in the container 12. Then a ball screw driving part 41 and the cam driving part 44 of an abutting mechanism are arranged outside the container 12 across a seal. The ball screw driving part 44 is connected to a control mechanism and so constituted that the moving base 31 after returning its origin set in the container 12 begins to be positioned and then moves to an abutting wait position.

14. 发明专利

JPH0990156A OPTICAL PARTS MOUNTING FILTER 失效
公开(公告)号：JPH0990156A
公开(公告)日：1997-04-04
申请号：JP26764195
申请日：1995-09-21
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： FURUKAWA TORU , FURUKAWA HIROSHI , NOMURA YOSHIKAZU , TOMITA NOBUO
IPC分类号： G02B6/293 , G02B6/00 , G02B26/00
摘要： PROBLEM TO BE SOLVED: To provide optical parts mounting filter, which can insert a filter between optical fibers if need, by freely inserting the optical filter by means of the micro displacement of a piezoelectric actuator. SOLUTION: The optical filter 30 inserted into a slit 20 can freely be inserted by the micro displacement of the piezoelectric actuator 40. A wide bimorph-type piezo-element (piezoelectric/electrostriction ceramics) with a satisfactory temperature characteristic is used for the piezoelectric actuator 40. When the polarity of DC voltage applied on the piezoelectric actuator 40 is changed, the piezoelectric actuator 40 bends, the tip vertically changes and the optical filter 30 is inserted between the optical fibers 10. When it is assumed that two wavelengths A and B (1.31μm and 1.55μm) exist in incident light and a long wavelength transmission type is used for the optical filter 30, for example, the light of 1.31μm and 1.55μm is caused to pass at the time of extracting the optical filter 30, and the light A of the wavelength 1.31μm is intercepted and the light B of the wavelength 1.55μm is caused to pass at the time of inserting the optical filter 30.

15. 发明专利

JPH0943521A OPTICAL SWITCH 失效
公开(公告)号：JPH0943521A
公开(公告)日：1997-02-14
申请号：JP21248495
申请日：1995-07-28
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： FURUKAWA HIROSHI , NOMURA YOSHIKAZU , TOMITA NOBUO
IPC分类号： G02B26/08
摘要： PROBLEM TO BE SOLVED: To suppress the generation of an oil trouble at the time of transport in an optical switch connecting an optical fiber while mechanically changing over the fiber. SOLUTION: Optical fibers on the fixed side 5 are fixedly arranged on plural V-shaped grooves provided on a V-groove plate 13 up to about middle part in the longitudinal direction of the V-shaped groove and optical fibers on the movable side 3 are positioned and connected to the optical fibers on the fixed side 5 of other party on the V-shaped groove. An auxiliary tank 2 of an oil reservoir is used for transiently withdrawing silicon oil of a refractive index matching material from a switch room 11 for preventing the generation of an oil trouble for a time interval for moving the switch to a prescribed installing place i.e., during transportation and communicated with the switch room by two communicative routes 21, 22.

16. 发明专利

JPH08152529A OPTICAL WIRING RACK 失效
公开(公告)号：JPH08152529A
公开(公告)日：1996-06-11
申请号：JP29355794
申请日：1994-11-28
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： MOMOTSU HITOHIRO , GOTO SHIGENORI , YOKOSUKA HIROSHI , TOMITA NOBUO , ATOBE NAOYUKI
IPC分类号： G02B6/00 , G02B6/38
摘要： PURPOSE: To improve the operability of the storage and replacement of a branch module by supporting thin plate type packages, which contain branch modules and optical connectors, on a frame side by side and arranging them on the frame in plural stages. CONSTITUTION: A thin plate type package 15 has a branch module 12, a branch unit 13, an optical connector 14, etc., in a thin plate type package body 16. For operation for inserting the thin plate package 15 up to the front surface side of the frame 11, the positioning rail 16m of the thin plate type package body 16 is fitted in a guide 11m and an engagement plate 161 is engaged with a support plate 111 at the same time, so that the package is positioned vertically. Further, the short side 16d of the thin plate type package body 16 is moved horizontally into the frame 11 while slid on the upper end of the support member 11f, and positioned horizontally by making the end surface on the front surface side of the thin plate type package 15 except the part of a collector 14 abut on a terminal panel 11b or making a fixed knob 16k abut on a stopper 11k.

17. 发明专利

JPH07181405A OPTICAL SWITCH 失效
公开(公告)号：JPH07181405A
公开(公告)日：1995-07-21
申请号：JP34620993
申请日：1993-12-22
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： FURUKAWA HIROSHI , NOMURA YOSHIKAZU , TOMITA NOBUO
IPC分类号： G02B26/08
摘要： PURPOSE:To realize 1XN optical switches by taking advantage of the characteristic of optical switches formed by using V-grooves that these switches do not require positioning devices and can, therefore, be miniaturized. CONSTITUTION:Substrates 10, 30 having plural pieces of the V-grooves are disposed to face each other. A substrate 70 for aligning is disposed in front of the lower substrate 10 and is provided with the V-grooves 71 to 75. Optical fibers 21 to 25 are previously fixed to these grooves. An optical fiber 40 for switching fitted with a magnetic material 42 is inserted into the arbitrary V- groove of the lower substrate 10 and is held butted against arbitrary one piece of the stationary optical fibers. Both right and left sides of the upper substrate 30 are provided with electromagnets 81, 82. The rear surface of the lower substrate is provided with a permanent magnet 84 and an electromagnet 83 which temporarily eliminates the attraction force of this permanent magnet. The optical fiber 40 for switching is moved to the desired V-groove by proper on and off of the electromagnets 81 to 83 and is made to turn on with one piece of the stationary optical fibers 21 to 25. This state is assured by the permanent magnet 84.

18. 发明专利

JPH04199016A OPTICAL MATRIX SWITCH 失效
公开(公告)号：JPH04199016A
公开(公告)日：1992-07-20
申请号：JP33201790
申请日：1990-11-29
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： TAMAKI YASUHIRO , YOKOSUKA HIROSHI , TOMITA NOBUO , TAKASUGI HIDETOSHI
IPC分类号： G02B26/08
摘要： PURPOSE:To obtain a switch enabling free transmission line connection to the line of any part by moving each head along its leased guide rail. CONSTITUTION:Each head 4 is moved along each leased guide rail 1 without being interfered by other heads so as to be moved freely into a specified position. Each head 4 is provided with an L-shape arm 3 of the specified thin width, and a movable plug 12 can be positively connected to mutually adjacent fixed plugs 6. This results in obtaining a switch enabling free transmission line connection to the line of any part.

19. 发明公开

EP0859253A4 MULTICORE OPTICAL CONNECTOR AND METHOD OF PRODUCING THE CONNECTOR 失效
标题翻译： OPTICAL更多钻芯及其制造方法
公开(公告)号：EP0859253A4
公开(公告)日：2000-11-02
申请号：EP97933866
申请日：1997-07-31
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： WATANABE TOMOHIRO , WATANABE KAZUNORI , SAITO TSUNETOSHI , SATO ETSUZO , OTA TOSHIHIKO , TOMITA NOBUO
IPC分类号： G02B6/30 , G02B6/34 , G02B6/38 , G02B6/40
CPC分类号： G02B6/29368 , G02B6/29389 , G02B6/30 , G02B6/3822 , G02B6/3839 , G02B6/3845 , G02B6/3861 , G02B6/3885
摘要： A multicore optical connector which is small in size, easy to assemble and highly reliable. A pluraliy of arrangement guide grooves (22) are formed in a flat base (21). The pitches of the guide grooves (22) are approximately equal to the diameter of a bare optical fibers (4a and 4b). A first optical fiber tape (6a) and a second optical fiber tape (6b) are joined and placed on the rear end side of a flat base (21). The first bare optical fibers (4a) of the first optical fiber tape (6a) and the second bare optical fibers (4b) of the second optical fiber tape (6b) are alternately arranged into the arrangement grooves (22) and the bare optical fibers (4a and 4b) are pressed on their leading end sides by a pressing member (23) to be held and fixed. A filter insertion groove (17) is formed in a region where the arrangement grooves (22) are so formed as to cross the arrangement grooves (22). A filter (16) is inserted into the filter insertion groove (17) to insert the filter (16) into the second bare optical fibers (4b) of the second optical fiber tape (6b).

20. 发明专利

DE69938683D1 未知
公开(公告)号：DE69938683D1
公开(公告)日：2008-06-19
申请号：DE69938683
申请日：1999-07-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： URUNO SHIGENORI , TACHIKURA MASAO , IZUMITA HISASHI , MINE KOJI , ENOMOTO YOSHITAKA , NAKAO NAOKI , TOMITA NOBUO , HIROOKA AKIRA , TAKEMOTO HAJIME
IPC分类号： G02B6/46 , H04Q1/14 , G02B6/44
摘要： An optical fiber distribution board (501) comprising: a central-side terminating section (510) for terminating first optical cable (511) optically connected to communication equipment (513) in a central office; a user-side terminating section (507) for terminating second optical cable (512) optically connected to subscriber terminal equipment; a cross connecting section (502) for switching connections of any optical fiber of said first optical cable (511) with any optical fiber of said second optical cable (512); a fiber sorting section (503) for accommodating said first optical cable (511) and separating optical fibers to be routed to said cross connecting section (502) from optical fibers to be routed to a fiber storage section (504); and a fiber-cord storage section (506) for providing connecting means for optically connecting any optical fiber from said fiber sorting section (503) to any terminal of said cross connecting section (502).

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