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21. 发明专利

JPS56164099A PRODUCTION UNIT FOR SINGLE CRYSTAL 失效
公开(公告)号：JPS56164099A
公开(公告)日：1981-12-16
申请号：JP6852080
申请日：1980-05-23
申请人： KOKUSAI DENSHIN DENWA CO LTD
发明人： OKAMURA YASUYUKI , MIMURA HIDENORI , KOMAZAWA YOSHIHISA
IPC分类号： C30B15/02 , C30B15/14 , C30B15/34
摘要： PURPOSE:To enable the continuous growth of single crystal at high speed, by communicating the melting part of a raw material with a die for growing a single crystal using a U-tube, and by making a steep temperature gradient at the solid-liquid interface between the melt introduced to the die and the single crystal. CONSTITUTION:The raw material 7 is dropped to make the melt level at the fixed position, and it is melted in the crucible 2 by the heater 1a. The heater 1a is eqipped with the lifting and lowering mechanism 10, and the melt level can be adjusted to any position based on the top of the die 4b by moving vertically the position of the heater 1a based on the melting part 2. The melt 5 is passed through the U-tube 8, the steep temperature gradient is produced by the temperature regulating means consisting of the cooler 9 and the heater 1c, the melt is transferred to the tip of the die 4b and converted into a single crystal. In the operation, the lowering speed Vd of the raw material 7 and the speed Vp of pulling up the single crystal are mainly regulated in such a way that the separating amount of the single crystal 6 is harmonized with the feed amount of the raw material 7.

22. 发明专利

JPS5639503A OPTICAL SUBMARINE CABLE 失效
公开(公告)号：JPS5639503A
公开(公告)日：1981-04-15
申请号：JP11421879
申请日：1979-09-07
申请人： KOKUSAI DENSHIN DENWA CO LTD
发明人： KAMIBAYASHI TETSUSABUROU , OOTA CHIYUUICHI , KOMAZAWA YOSHIHISA , MIMURA HIDENORI , TANAKA FUJIO
IPC分类号： H01B7/14 , G02B6/44 , H01B7/17
摘要： PURPOSE:To minimize water penetration faults owing to the rupture of a cable by burying plural optical fiber strands and a single high tensile wire in a cylinder comprising a hard-to-deform material by providing required intervals and adhering the cylinder to the inside wall of a metal pipe for pressure resistance. CONSTITUTION:A cylinder 10 of an extremely hard to deform material such as, for example, super hard ceramics, is disposed to a required length in the cable, and optical fiber strands 1 and a high tensile wire 2 are passed in the holes 11 having beforehand been opened in the cylinder 10 and are adhered by means of an adhesive agent. Next, an adhesive agent 12 is coated on the surface of the cylinder 10 made of super hard ceramics and the cylinder is successively bonded to a copper pipe 13 for power supply. Further, high tensile wires, polyethylene layer and sheath are covered thereon.

23. 发明专利

JPS5632106A FIBER UNIT FOR OPTICAL MARINE CABLE 失效
公开(公告)号：JPS5632106A
公开(公告)日：1981-04-01
申请号：JP10714279
申请日：1979-08-24
申请人： KOKUSAI DENSHIN DENWA CO LTD
发明人： KAMIBAYASHI TETSUSABUROU , OOTA CHIYUUICHI , KOMAZAWA YOSHIHISA , MIMURA HIDENORI , TANAKA FUJIO
IPC分类号： H01B7/14 , G02B6/44
摘要： PURPOSE:To decrease the percolation of sea water into optical fibers in the titled fiber unit, by interposing a fiber layer impregnated with oil between a synthetic resin layer containing optical fiber strands therein and a sheath such as of nylon. CONSTITUTION:A fiber unit 5 disposed within an optical marine cable consists of a synthetic resin layer 13 such as of silicone rubber covering a plurality of optical fiber strands 1 and a sheath 9 of nylon or the like disposed on the outer side thereof. A fiber layer 14 impregnated with oil is provided between the synthetic resin layer 13 of this optical fiber unit 5 and the sheath 9, and woven vegetable fibers or the like are preferably used as the fiber layer 14. Thereby, the moisture penetrating from the circumferential direction of the unit 5 is blocked by the fiber layer 14 of woven yarns or the like; in addition, even the moisture entering the unit 5 in its axial direction from the junction portions between the sheath 9 and the synthetic resin layer 13 when the unit breaks is prevented by this fiber layer 14.

24. 发明专利

JPS54124746A FIBER FOR OPTICAL TRANSMISSION 失效
公开(公告)号：JPS54124746A
公开(公告)日：1979-09-27
申请号：JP3212378
申请日：1978-03-20
申请人： KOKUSAI DENSHIN DENWA CO LTD
发明人： MIMURA HIDENORI , NAKAGOME YUKIO
IPC分类号： G02B1/02 , C03B37/023 , C30B15/00 , G02B6/00

25. 发明专利

JPH0925139A FLUORORESIN-CLAD FLUORIDE OPTICAL FIBER 失效
公开(公告)号：JPH0925139A
公开(公告)日：1997-01-28
申请号：JP20022695
申请日：1995-07-14
申请人： KOKUSAI DENSHIN DENWA CO LTD
发明人： NODA YUKIO , MIMURA HIDENORI , NAKAI TETSUYA , TANI TOSHIO
IPC分类号： G02B6/00 , C03C3/112 , C03C13/04
摘要： PROBLEM TO BE SOLVED: To improve the loss characteristic of a fluororesin-clad fluoride optical fiber by forming the core of a fluoride glass in which the F is replaced with a specified amt. of Br or Cl and the clad replaced with a fluororesin. SOLUTION: The core of the fluororesin-clad fluoride optical fiber is formed of a glass contg. F as its component with 0-4.1% Br or Cl or Br and Cl substituted for the F and the clad replaced with a fluororesin. The F-contg. glass consists of 11-16mol% Zr or Hf or Zr and Hf, 3-11% Ba. 0.5-2% La, 0.5-1.5% Al, 1-6% Na and 70-80% F.

26. 发明专利

JPH0712721A SPECTRAL ANALYSIS DEVICE ENABLING REMOTE MEASUREMENT 失效
公开(公告)号：JPH0712721A
公开(公告)日：1995-01-17
申请号：JP17466193
申请日：1993-06-23
申请人： KOKUSAI DENSHIN DENWA CO LTD
发明人： NIIHORI OSAMU , MIMURA HIDENORI , NODA YUKIO , NAKAI TETSUYA
IPC分类号： G01N21/35
摘要： PURPOSE:To analyze even multiple low density substances simultaneously by transmitting sample light released from a spectral analysis light source to a spectral analysis cell, and also transmitting signal light from the spectral analysis cell to a measurement part. CONSTITUTION:A wave guide type glass light emitting element 4 is connected to a sample irradiation light transmitting optical fiber 7. Also a gas sump 13 for inducing gas is connected to both ends of an analyzing cell 8 using a hollow wave guide path 12, and a gas to be measured is sucked into one gas sump 13 and introduced into the cell 8. Sample lights (signal lights) transmitted through the cell 8 are collected by a lens 16 of the other gas sump 13, and concentrated on a fluoride glass signal light transmission fiber 17. The output of the signal light is sent to a measurement part 18, changed into parallel light beam in the measurement part, through a collimator lens 19, and then divided by a beam splitter 20. After that, one is inputted into a detector 22, and the other is inputted into a detector 24. Then the levels of both of them are measured comparatively to measure the density of CO2 gas.

27. 发明专利

JPH03218945A LIGHT AMPLIFYING FIBER 失效
公开(公告)号：JPH03218945A
公开(公告)日：1991-09-26
申请号：JP1178290
申请日：1990-01-23
申请人： KOKUSAI DENSHIN DENWA CO LTD , SHINETSU CHEMICAL CO
发明人： MIMURA HIDENORI , EDAKAWA NOBORU , YOSHIDA HISAHIRO , KAMIYA KAZUO
IPC分类号： G02B6/00 , C03C4/00 , C03C13/04 , G02F1/35
摘要： PURPOSE:To obtain the light amplifying fiber having high efficiency in converting the excitation light into induced-emission light and satisfying the requirements for use in an optical communication system by substituting Si ion close to Er ion with a specified ion in the Er-addition light amplifying quartz glass fiber. CONSTITUTION:In the Er-addition light amplifying quartz glass fiber, the Si ion close to Er ion is locally substituted with an ion capable of increasing the asymmetry in the ligand field of the Er ion, a cation forming a network forming oxide in the glass, e.g. P , B , As and Sb or a cation forming an intermediate oxide in the glass, e.g. Al , Ga , Ti , Sn , Ta , Nb and Bi , to obtain a light amplifying fiber for optically exciting Er ion and amplifying the signal light propagating in the fiber with the induced-emission light. The concn. of the substituent ion is kept low so that the consistency with the transmission fiber is not hindered.

28. 发明专利

JPS63208022A OPTICAL IMAGE ELEMENT 失效
公开(公告)号：JPS63208022A
公开(公告)日：1988-08-29
申请号：JP4040087
申请日：1987-02-25
申请人： KOKUSAI DENSHIN DENWA CO LTD
发明人： MIMURA HIDENORI , NAGAO YASUYUKI
IPC分类号： G02F1/03
摘要： PURPOSE:To improve a light transmission effect so that an image of good contrast is obtd. with a smaller exposure by providing an epitaxy layer consisting of a material which can obtain lattice matching with the same kind of the crystal structure as the crystal structure of a single crystal plate and has the high light transmission effect to the incident light side of the single crystal plate. CONSTITUTION:The epitaxy layer 7 which can obtain lattice matching with the same kind of the crystal structure as the crystal structure of the single crystal plate 1 and has the high light transmission effect is provided on the incident light side of the single crystal plate 1. An input image signal of blue light which is incident light is, therefore, imaged on the freshly provided layer 7. Generation of electrons and holes take place in the layer 7. The holes are trapped in the boundary face A between the layer 7 and an insulating layer 2, and the electrons pass the inside of the single crystal plate 1 and are trapped in the boundary face B between the single crystal plate 1 and the insulating layer 2, by which a potential distribution is eventually created. Namely, the light transmission effect of the single crystal plate 1 can be substantially increased if the layer having the high light transmission effect is placed about 10mum in the region near the surface of the single crystal plate 1. The image of good contrast is obtd. with the smaller exposure by improving the light transmission effect in such a manner.

29. 发明专利

JPS6048806B2 失效
公开(公告)号：JPS6048806B2
公开(公告)日：1985-10-29
申请号：JP108378
申请日：1978-01-11
申请人： KOKUSAI DENSHIN DENWA CO LTD
发明人： MIMURA HIDENORI , IMAMURA OSATAKE , KOBAYASHI TOSHIHIKO
IPC分类号： G03G19/00 , G03G5/16 , G11B5/02 , G11B11/10 , G11B11/105

30. 发明专利

JPS60200844A DEHYDRATION TREATMENT OF OPTICAL MATERIAL BY GLOW DISCHARGE 失效
公开(公告)号：JPS60200844A
公开(公告)日：1985-10-11
申请号：JP5731284
申请日：1984-03-27
申请人： KOKUSAI DENSHIN DENWA CO LTD
发明人： NIIHORI OSAMU , MIMURA HIDENORI , TOKIWA HIDEHARU
IPC分类号： C03B32/00 , C03B37/014 , C03C13/04 , C03C23/00 , C03C25/00 , F26B3/347 , G02B6/00
摘要： PURPOSE:To dehydrate optical material contg. OH group without contg. impurities by arranging the optical material contg. OH group in the atmosphere of halogen atom isolated by glow discharge in the state wherein said material is subjected to high-frequency electric heating and substituting the halogen atom for the OH group. CONSTITUTION:When for example, gaseous fluorine is introduced in a reaction tube 3 from a gas introduction port 7 and glow discharge is caused from high frequency coils 8, plasma 9 contg. fluorine atom in nascent state is uniformly formed in the inside of the coil 8. On the other hand, the material 5 to be treated which is optical material is heated with the eddy current of high-frequency current flowing through coil 8 to give thermal energy necessary to a chemical reaction. Therefore, the fluorine atom isolated in the nascent state is substituted for the OH group of said material 5 and furthermore the OH group is allowed to react with fluorine atom to produce hydrogen halide and H2O molecule and these are discharged from an exhaust port 6. In this manner, the material is dehydrated.

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