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51. 发明专利

JPH088834A OPTICAL EXTERNAL MODULATOR FOR OPTICAL COMMUNICATION AND TWO-WAY OPTICAL COMMUNICATION SYSTEM USING THE SAME 失效
公开(公告)号：JPH088834A
公开(公告)日：1996-01-12
申请号：JP15536294
申请日：1994-06-14
申请人： FURUKAWA ELECTRIC CO LTD
发明人： MURATA MATSUE , HIGAMI TOSHIYA , SUGIMURA TAKEZOU , NEGAMI SHOICHI , NISHIKAWA SHIGEAKI
IPC分类号： G02F1/01 , H04B10/2587 , H04B10/516 , H04B10/61 , H04B10/152 , H04B10/04 , H04B10/06 , H04B10/142
摘要： PURPOSE:To provide the optical external modulator applying polarized plane modulation to an incident light without adjustment of the polarization state of 71 light made incident on the optical external modulator and the 2-way optical communication system using it. CONSTITUTION:The optical external modulator is provided with a polarization plane modulation section 11 in which a polarized state of light changes with a modulation signal through application of a stress to an optical transmission line 7, a phase change section 8 changing a phase difference between an X component and a Y component of the light propagated through the optical transmission line 7 by a value (2m-1)*pi/4 (m is a positive integer) and a reflecting section 20 reflecting the propagated light and they are arranged in this order. In the two-way optical communication system, the master station has a light source and an incoming signal use receiver and the slave station is provided with an outgoing signal use receiver receiving an outgoing signal sent from the master station and an incoming signal transmitter section and the incoming signal transmission section uses any of the optical external modulators described in the claims 1 to 12.

52. 发明专利

JPH07264137A POLARIZED PLANE MODULATION LIGHT RECEIVING METHOD AND POLARIZED PLANE MODULATION LIGHT RECEIVER USED THEREFOR 失效
公开(公告)号：JPH07264137A
公开(公告)日：1995-10-13
申请号：JP7993194
申请日：1994-03-24
申请人： FURUKAWA ELECTRIC CO LTD , TOKYO ELECTRIC POWER CO
发明人： HIGAMI TOSHIYA , NISHIKAWA SHIGEAKI , KAMIYA ISAMU , WATANABE TAKEMOTO
IPC分类号： H04B10/516 , H04B10/25 , H04B10/61 , H04B10/152 , H04B10/04 , H04B10/06 , H04B10/142
摘要： PURPOSE:To obtain the polarized plane modulation light receiver detecting a modulation output without fail even when an analyzer is fixed. CONSTITUTION:A polarized plane modulation light is demultiplexed into three by demultiplexers 5a, 5b, the one polarized plane modulation light is given to a 1st analyzer 3a through a polarized wave reservation fiber 2 with the length at which a phase difference of two components of the one polarized plane modulation light reserved in the fiber is deviated by (2m-1)Xpi/2 (m is a positive integer) and the other two polarized plane modulation lights are given to 2nd and 3rd analyzers 3b, 3c not through the polarized wave reservation fiber. which receive the intensity modulation light passing through each analyzer Further, the major axis direction of the polarized wave reservation fiber and the 1st analyzer are arranged at an angle difference of 45 deg. and the 2nd and 3rd analyzers are arranged at an angle difference of 45 deg..

53. 发明专利

JPH06308436A OPTICAL EXTERNAL MODULATOR 失效
公开(公告)号：JPH06308436A
公开(公告)日：1994-11-04
申请号：JP11769593
申请日：1993-04-21
申请人： FURUKAWA ELECTRIC CO LTD
发明人： HIGAMI TOSHIYA , NEGAMI SHOICHI , MURATA MATSUE , NISHIKAWA SHIGEAKI
IPC分类号： G02F1/11 , G02F1/025
摘要： PURPOSE:To reduce attenuation in light and to reduce dispersion in a characteristic. CONSTITUTION:In an optical external modulator where a lower electrode 2, a piezoelectric body 3 and an upper electrode 4 are laminated successively on one side surface of a supporting substrate 1 having an optional acoustic impedance, and an optical waveguide 5 is arranged on the upper electrode 4 or on the other surface of the supporting substrate 1, and the polarization plane of light propagating through the optical waveguide 5 is modulated when the piezolectric body 3 is driven by impressing a high frequency signal between the lower electrode 2 and the upper electrode 4, the same optical waveguide 2 with the nearly same aoustic impedance as the acoustic impedance of the supporting substrate 1 is provided. The efficient optical external modulator is obtained since no reflection attenuation due to the difference of the acoustic impedance occurs in a process where a sound wave emitted from the piezoelectric body 3 is propagated through the supporting substrate 1 to be made incident on the optical waveguide 5.

54. 发明专利

JPH06241924A TORQUE DETECTOR 失效
公开(公告)号：JPH06241924A
公开(公告)日：1994-09-02
申请号：JP5654993
申请日：1993-02-22
申请人： FURUKAWA ELECTRIC CO LTD
发明人： HIGAMI TOSHIYA , NISHIKAWA SHIGEAKI
IPC分类号： G01L3/10
摘要： PURPOSE:To provide a torque detector by which magnetization components in a circumferential direction of a rotating shaft can be detected at multi-points in the circumferential direction and the surface of the rotating shaft can be also magnetized effectively. CONSTITUTION:The title detector is provided with an exciting coil 2 that is arranged in non-contact with the periphery of a rotating shaft 1 whose surface is made of a ferromagnetic material and excites the surface of the shaft 1 in a parallel direction against its axis, and a plurality of detection coils 3 arranged at equal intervals on the outer circumference in an exciting area of the shaft 1, and the magnetostriction amount of the shaft 1 can be measured by using the signals detected by the detection coil 3. In the coil 2, at least two divided heads 6 where a coil 8 is wound on the surface of a magnetic core 4 whose section is almost U-shaped in a parallel direction against the shaft 1 are arranged concentric-circularly on the outer circumference of the shaft 1. In addition, the coil 3 is housed within the coil 2.

55. 发明专利

JPH06222314A OPTICAL EXTERNAL MODULATOR 失效
公开(公告)号：JPH06222314A
公开(公告)日：1994-08-12
申请号：JP2981393
申请日：1993-01-26
申请人： FURUKAWA ELECTRIC CO LTD
发明人： HIGAMI TOSHIYA , NEGAMI SHOICHI , MURATA MATSUE , NISHIKAWA SHIGEAKI
IPC分类号： G02F1/11
摘要： PURPOSE:To provide an optical external modulator facilitating the formation of a piezoelectric film and an electrode and with excellent modulation efficiency by housing and arranging an optical fiber in a housing groove formed on one side surface of a planar substrate and forming a piezoelectric element part on the other surface of the substrate. CONSTITUTION:The planar substrate 2 is provided with an acoustic impedance roughly equal to the optical fiber 1, and consists of a medium whose propagating velocity of a sound wave is larger than that of the fiber 1, e.g. aluminum. The housing groove 3 with a curvature slightly larger than that of the fiber 1 is formed on the center of one side surface of the substrate 2 by machining. The piezoelectric element part 7 is formed on the other surface of the substrate 2 by laminating a lower part electrode 4, the piezoelectric film 5 and an upper part electrode 6 successively by vacuum deposition and sputtering. Then, since the substrate is formed into a plane shape, the piezoelectric film 5 with a uniform characteristic is formed easily on the substrate, and the sound wave generated from the piezoelectric film 5 is converged to the optical fiber 1 efficiently, and the beam passing through the optical fiber 1 is modulated efficiently.

56. 发明专利

JPH01271016A METHOD FOR BLANKING NI-TI-BASED SHAPE MEMORY ALLOY 失效
公开(公告)号：JPH01271016A
公开(公告)日：1989-10-30
申请号：JP9897588
申请日：1988-04-21
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YOSHIDA KOJI , HIGAMI TOSHIYA , OBARA YUICHI , FUSE KENICHI
IPC分类号： B21D28/02 , C22C19/03
摘要： PURPOSE:To extend the life of a blanking die and to improve the dimensional accuracy of a blanked stock by cooling Ni-Ti-based shape memory apply at or under the martensite transformation temperature and then blanking it. CONSTITUTION:An Ni-Ti-based shape memory alloy bar 3 is moved between progressive dies 2a, 2b set in a press 1 and alcohol, etc., cooled by liquid nitrogen, dry ice, for example, is sprayed from a refrigerant injection nozzle 4 onto the shape memory alloy bar 3 just before the entrance of the progressive dies 2a, 2b. The material is blanked while it is cooled at or under the martensite transformation temperature. In this way, blanking is simplified, the life of the blanking die is improved, the blanked surface is smoothed and the dimensional accuracy of the blanked material can be improved.

57. 发明专利

JPH01109672A FIXING METHOD FOR SHAPE MEMORY SPRING 失效
公开(公告)号：JPH01109672A
公开(公告)日：1989-04-26
申请号：JP26536787
申请日：1987-10-22
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YOSHIDA KOJI , HIGAMI TOSHIYA , OBARA YUICHI , FUSE KENICHI
IPC分类号： H01R24/00 , H01R43/00
摘要： PURPOSE:To facilitate the fixing of a shape memory spring and reduce the cost by using a supporting member made of thermoplastic resin and melting the thermoplastic resin to fix a shape memory spring to this supporting member. CONSTITUTION:Thermoplastic resin, e.g., polyphenylene sulfide, polyether imide, is used for a supporting member 7 which is a fitting mate of a shape memory spring 6. When the shape memory spring 6 is to be fitted to the supporting member 7, the spring 6 is inserted into the groove 7A of the supporting member 7 and slightly pressed or temporarily fixed with an adhesive or the like, then a build-up section 7C is heated to its melting temperature, the melted thermoplastic resin is put in notch sections 6A of the spring 6 or below lugs 6B in the groove 7A to be integrated with the supporting member 7.

58. 发明专利

JPS6376285A CARD-EDGE CONNECTOR DEVICE 失效
公开(公告)号：JPS6376285A
公开(公告)日：1988-04-06
申请号：JP21906086
申请日：1986-09-17
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YOSHIDA KOJI , HIGAMI TOSHIYA , OBARA YUICHI , FUSE KENICHI
IPC分类号： H01R24/00

59. 发明专利

JPS6369169A ELECTRONIC CONNECTOR 失效
公开(公告)号：JPS6369169A
公开(公告)日：1988-03-29
申请号：JP21149186
申请日：1986-09-10
申请人： FURUKAWA ELECTRIC CO LTD
发明人： HIGAMI TOSHIYA , YOSHIDA KOJI , OBARA YUICHI
IPC分类号： H01R13/03 , G01R1/073 , H01R4/01 , H01R24/00

60. 发明专利

JPS6318802A PRIMARY RADIATOR 失效
公开(公告)号：JPS6318802A
公开(公告)日：1988-01-26
申请号：JP16338086
申请日：1986-07-11
申请人： FURUKAWA ELECTRIC CO LTD
发明人： HIGAMI TOSHIYA , OBARA YUICHI , FUSE KENICHI
IPC分类号： H01Q1/36
摘要： PURPOSE:To simply and surely fit a watertight cap by integrating the thin film sheet form water tight cap, a frame having consecutive small projections over the entire circumference of a sheet and a primary radiator main body by ultrasonic wave welding or high frequency welding. CONSTITUTION:The primary radiator main body 1 is formed by the injection molding of, e.g., polyphenyleneoxide (Noril) and Ni plating is applied at least to its inside. The watertight cap 3 is formed by punching a sheet obtained by, e.g, an extrusion forming and the frame 8 is obtained by, e.g., injection molding. The frame 8 having small projections 7 is fitted to the watertight cap 3 and welded to the primary radiator main body 1.

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