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21. 发明专利

JPH04372915A CONNECTING JIG FOR PHOTO-CONNECTOR 失效
公开(公告)号：JPH04372915A
公开(公告)日：1992-12-25
申请号：JP15146191
申请日：1991-06-24
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： SAITO KAZUTO , KAKII TOSHIAKI , ISHIDA HIDETOSHI , KATSUSHIME HIROSHI , SUZUKI SHUZO , HAIBARA TADASHI , MATSUMOTO MICHITO
IPC分类号： G02B6/38 , G02B6/40
摘要： PURPOSE:To provide the connecting jig of photo-connectors capable of connecting optical fibers in package or exchanging the optical fibers simply and precisely without requiring a skill. CONSTITUTION:A jig main body guiding the butt-connection between one photo- connector 5a individually removably storing multiple ferrules 2 serving as connecting terminals of an optical fiber F in parallel and the other photo- connector 5b and releasing holes 31, 32 formed on the jig main body at positions faced to the ferrules 2 and assisting the release of the ferrules 2 from the photo- connectors 5a are provided.

22. 发明专利

JPH03102304A AXIS ALIGNING METHOD FOR OPTICAL FIBER 失效
公开(公告)号：JPH03102304A
公开(公告)日：1991-04-26
申请号：JP24162889
申请日：1989-09-18
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： HAMADA SHINKO , WATANABE TSUTOMU , WATABE KAZUO , MATSUMOTO MICHITO
IPC分类号： G02B6/255
摘要： PURPOSE:To suppress connection loss below a targeted value at all times by measuring the quantity of a relative axis shift between optical fiber end parts to be connected and adjusting the heat time of a connection part according to the shift quantity. CONSTITUTION:The tip parts of the optical fibers 1 and 2 to be connected are irradiated by a light source 7 and a transmission image is photographed by a CCD camera 10 through a magnifying lens 8. The transmission image is converted into a video signal, which is sent to an image processing part 11 and converted into a binary value, then the relative axis shift quantity of the connection part is measured. This measured value is sent to a central control part 12 to retrieve the shortest discharge time corresponding to the axis shift quantity from a discharging time map stored previously in a ROM and a specific discharging voltage is applied to discharging electrodes 6a and 6b through a discharging control part 13. Consequently, even if an initial shift quantity is large, the connection is made with lower loss than the targeted value.

23. 发明专利

JPH0365903A CUTTING DEVICE FOR OPTICAL FIBER 失效
公开(公告)号：JPH0365903A
公开(公告)日：1991-03-20
申请号：JP20254589
申请日：1989-08-04
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： OSAKA KEIJI , MATSUMOTO MICHITO
IPC分类号： G02B6/00 , C03B37/16
摘要： PURPOSE:To decrease the amt. of irregularity in cutting in the case of simultaneous cutting of multiple optical fibers by driving a cutting blade to give initial flaws to the optical fibers by an electric motor, by which the specular surfaces perpendicular to the optical axis of the optical fibers are obtd. with good accuracy. CONSTITUTION:The optical fibers 19 fixed to a fixing jig 17 are spanned on a lower clamping member 20. The cutting blade 22 is driven by the rotation of the electric motor 36 and the initial flaws are given to the surfaces of the optical fibers 19. A 2nd upper case 13 is deflected to further push a cutting head 27 downward to bend the optical fibers downward. The initial flaws given to the optical fibers are, therefore, expanded and the optical fibers are fractured. The fluctuation in the moving speed of the motor at the time of giving of the initial flaws is suppressed in this way and the specular surfaces perpendicular to the optical axis of the cut surfaces are accurately obtd. The amt. of the irregularity in cutting in the case of simultaneous cutting of the multiple optical fibers is decreased.

24. 发明专利

JPH0362004A METHOD FOR OBSERVING OPTICAL FIBER 失效
公开(公告)号：JPH0362004A
公开(公告)日：1991-03-18
申请号：JP19875289
申请日：1989-07-31
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： HAMADA SHINKO , ASANO YASUO , WATANABE TSUTOMU , YANAGI AKIRA , MATSUMOTO MICHITO , KANDA NOBORU
IPC分类号： G02B6/24 , G02B6/255
摘要： PURPOSE:To efficiently observe plural pieces of optical fibers with high observation accuracy by dividing the fibers to each of respective fiber groups and observing the fibers when the high observation accuracy is required and integrally observing all the optical fibers when the high observation accuracy is not required. CONSTITUTION:Plural pieces of the optical fibers 1a to 1h are divided to the plural fiber groups. The focus of the liquid crystal system is matched near the centers B2, C2 of the respective fiber groups and the optical fibers are observed by each of the respective fibers via this optical system. The focus of the liquid crystal system is matched near the center A1 of all the optical fibers and all the optical fibers are integrally observed. The fibers are observed by each of the respective optical fiber groups in a range where the blur of the image is relatively small when the high observation accuracy is required. All the optical fibers are simultaneously observed even if the blur of the optical fiber images increases more or less when the high observation accuracy is not required. Plural pieces of the optical fibers are observed with the high observation accuracy in this way.

25. 发明专利

JPH0246411A METHOD OF BRANCHING TAPE-LIKE COATED OPTICAL FIBER 失效
公开(公告)号：JPH0246411A
公开(公告)日：1990-02-15
申请号：JP19749388
申请日：1988-08-08
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： KATSURAJIMA WATARU , OSAKA KEIJI , MATSUMOTO MICHITO
IPC分类号： G02B6/00 , G02B6/44
摘要： PURPOSE:To allow efficient branching of fibers without damaging the fibers by forming a score to the tape-like coated optical fiber and tearing the score in the optical axis direction. CONSTITUTION:The score is formed between the optical fibers to be branched in a part of the common coating of the tape-like coated optical fiber. A pin 12 is inserted into this score and is inclined in the direction orthogonal with the optical fiber; thereafter, the pin 12 is moved in the optical axis direction to branch the fibers. Since the direct contact of a tool with the fibers is obviated, no damages are given to the fibers. Since the branching of the coated fibers with the simple tool is possible, the working time is shortened and the working efficiency is improved.

26. 发明专利

JPH027005A FUSION SPLICING DEVICE FOR OPTICAL FIBER 失效
公开(公告)号：JPH027005A
公开(公告)日：1990-01-11
申请号：JP15892788
申请日：1988-06-27
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： OSAKA KEIJI , ASANO YASUO , MATSUMOTO MICHITO , HAIBARA TADASHI , NARAOKA SEIICHI
IPC分类号： G02B6/255 , G02B6/24
摘要： PURPOSE:To safely and automatically remove the coating residues sticking to the outer peripheral surfaces of bare optical fibers by disposing respectively one set of discharge electrode rod pairs to both sides of a pair of discharge electrode rods for connection separately therefrom and fusing the fibers by electric discharge heating. CONSTITUTION:The coating residues 3 sticking to the outer peripheral surface of the bare optical fiber 2 positioned on the right side are first removed by the discharge electrode rods 12 positioned in the solid line position of a current switching mechanism 14 and the current switching mechanism is switched to remove the coating residues 3 sticking on the outer peripheral surface of the bare optical fiber 2 on the left side by the discharge electrode rods positioned on the left side. The bare optical fibers 2 are thereafter aligned by an aligning base 10 and the current switching mechanism 14 is positioned to the center. The fibers 2 are then subjected to the electric discharge heating by the discharge rods 11 for connection, by which the fibers are fushion-spliced. The coating residue sticking to the outer peripheral surfaces of the bare optical fibers are safely and automatically removed in this way.

27. 发明专利

JPH01147416A AUTOMATIC DISCHARGING DEVICE FOR OPTICAL FIBER 失效
公开(公告)号：JPH01147416A
公开(公告)日：1989-06-09
申请号：JP30619787
申请日：1987-12-03
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： OSAKA KEIJI , ASANO YASUO , MATSUMOTO MICHITO , NAKAYAMA SEIJI
IPC分类号： G02B6/24
摘要： PURPOSE:To automatically discharge optical fibers and to rationalize and speed up the connection of the optical fibers by providing discharging means which are so constituted as to hinder the movement of the optical fibers in a resetting direction without hindering the movement thereof in a carrying direction to the title device. CONSTITUTION:The discharging members 7, 7 are constituted of contact parts (a) which move in a conveying direction and come into sliding contact with the optical fibers and movement prohibiting parts (b) which prohibit the move ment of the optical fibers 1 moving in the resetting direction. The optical fibers 1 are fed while the fibers maintain the contact with the contact parts (a) of the discharging members 7 and the tension applying pats 4 release the tension of the fibers 1 in the state in which the fibers 1 are cleared from the members 7. The lower gripping members 3b of the fiber gripping parts 3 are thus opened (moved downward). The carrying mechanism is reset to the home position while carrying the fibers on the lower gripping members 3b. The fibers 1 are, therefore, nabbed by the movement prohibiting parts (b) of the members 7 and are discharged to the discharging position. The working efficiency is thereby improved and the connection of the optical fibers is speeded up and rationalized.

28. 发明专利

JPH01114809A AUTOMATIC CONNECTING DEVICE FOR OPTICAL FIBER 失效
公开(公告)号：JPH01114809A
公开(公告)日：1989-05-08
申请号：JP27287587
申请日：1987-10-28
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： OSAKA KEIJI , ASANO YASUO , FURUYA HIDEJI , WATABE KAZUO , HAIBARA TADASHI , MATSUMOTO MICHITO
IPC分类号： G02B6/24
摘要： PURPOSE:To continuously and easily execute an automatic connection by carrying a pair of optical core fibers, allowing them to approach and holding them, eliminating the coating of the core end part and bringing the fiber to cut processing, welding and connecting it, and thereafter, moving it to a reinforcing position and executing a method for reinforcing it by a reinforcing material. CONSTITUTION:A pair of optical core fibers having plural pieces of optical fibers are supplied by core supply units 3L, 3R provided on both sides of a body device 1. This core is carried in the direction for approaching along the optical axis by carrying units 4L, 4R. Subsequently, by terminal processing units 5L, 5R, the coating of the core is eliminated and cut, and thereafter, the end part is process, and said core is welded and connected by a core welding and connecting unit 6. This core is transferred to a core reinforcing unit 7 by core carrying units 8L, 8R provided with holding parts 9L, 9R, and reinforced by a reinforcing material. According to such a constitution, the connection of the core can be continuously and easily automatized.

29. 发明专利

JPS59229312A HEATER FOR HEATING HEAT-SHRINKABLE TUBE 失效
公开(公告)号：JPS59229312A
公开(公告)日：1984-12-22
申请号：JP10410883
申请日：1983-06-13
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE , FUJIKURA LTD
发明人： KAKII TOSHIAKI , USUI YUUICHI , MATSUMOTO MICHITO , MURATA NORIO , KASHIMA GIYUU , YAMADA TAKESHI
IPC分类号： B29C63/00 , B29C51/00 , B29C61/00 , B29C63/42 , B29K105/02 , H05B3/10 , B29C27/20 , H05B3/00
摘要： PURPOSE:To obtain the heater without necessity of the detecting element for temperature control by using the heater for heating a heat-shrinkable tube in which the temperature sensitive semiconductor resistors having different properties are combined longitudinally along said heat-shrinkable tube so as to keep a constant temperature distribution. CONSTITUTION:A plurality (three in this example) of heat sensitive semiconductor resistors 5 with different properties are arranged longitudinally along the heat-shrinkable tube 2 covering the welding joint of a optical fiber 1 for reinforcement. These heat sensitive semiconductor resistors 5 are combined such that the resistor arranged in the center of the heat-shrinkable tube 2 and the resistors arranged at its ends generate constant temperature distribution. That is to say, the heat sensitive semiconductor resistor 5a with high temperature property is arranged at the center of the heat-shrinkable tube 2, and the heat sensitive semiconductor resistors 56 with low temperature property are arranged at its end parts. Thus, the heater 5 without necessity of the detecting element for temperature control may be obtained.

30. 发明专利

JPS578511A CONNECTING METHOD FOR OPTICAL FIBER 失效
公开(公告)号：JPS578511A
公开(公告)日：1982-01-16
申请号：JP8170680
申请日：1980-06-17
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD , SUMITOMO ELECTRIC INDUSTRIES , FUJIKURA LTD
发明人： HIRAI MASATAKA , MIYAUCHI MITSURU , MATSUMOTO MICHITO , KAMIKURA YASUHIRO , TODA HIROICHI , WATANABE ATOU
IPC分类号： G02B6/24 , G02B6/38 , G02B21/18
摘要： PURPOSE:To connect optical fibers easily with high accuracy by insertably providing a spacing setting means and a mirror for joint observation in the opposite spacing of the clad-removed parts of a pair of optical fibers and below the same, respectively. CONSTITUTION:Optical fibers 9a, 9b are held slippably to holding means 5a1-5a3, 5b1-5b3, and clad-removed parts 10a, 10b are set into the grooves 7a, 7b of fixing tables 2a, 2b thence moving tables 1a, 1b are moved in arrow directions until the leading ends of the parts 10a, 10b abut on a spacing setting means 3. After the means 3 is retreated, feed is applied to the tables 1A, 1B thereby setting the parts 10a, 10b at a microspacing. Thence, a specular surface 12 having a 45 deg. angle of inclination with respect to the optical axis of a microscope 11 is inserted below the opposite parts of the parts 10a and 10b. The operator sticks the optical fibers by melting while observing the top and side surfaces thereof. Thereby, the highly accurate connection is easily accomplished.

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