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1. 发明专利

JPH10300940A DEVICE FOR MACHINING END FACE OF OPTICAL FIBER AND USAGE THEREOF 失效
公开(公告)号：JPH10300940A
公开(公告)日：1998-11-13
申请号：JP10910897
申请日：1997-04-25
申请人： MITSUBISHI RAYON CO
发明人： SERA MIKIO
IPC分类号： G02B6/24 , G02B6/00 , G02B6/02 , G02B6/10
摘要： PROBLEM TO BE SOLVED: To stably obtain the smooth end face of an optical fiber by making the cross sectional area at the time of cutting a joined part integrally joining a heater block and a mirror finished surface plate by a plane parallel with the mirror finished surface plate smaller than the area of the mirror finished surface plate in a plane including a mirror face. SOLUTION: The cross sectional area at the time of cutting a joined part 4 integrally joining a heater block 2 and a mirror finished surface plate 3 by a plane parallel with the mirror finished surface plate is made smaller than the area of the mirror finished surface plate 3 in a plane including a mirror face. Namely, the smaller the cross sectional area is, at the time of cutting a joined part 4 and the longer the length between the joined part 4 and a part being in contact with the mirror finished surface plate 3 is, the lower the heat transfer efficiency is decreased. In this case, while taking the specific heat and the durability, etc., of the base stock used for the joined part 4 into consideration, the size of the joined part 4 is designed so as to realize the optimum heat transfer efficiency.

2. 发明专利

JPH10277905A RING LIGHT GRINDING MACHINE AND GRINDING METHOD 失效
公开(公告)号：JPH10277905A
公开(公告)日：1998-10-20
申请号：JP8960797
申请日：1997-04-08
申请人： MITSUBISHI RAYON CO
发明人： KISHIKAWA TATSUHIRO , HATSUTORI MAREYOSHI , SUGIURA MASAYUKI , SERA MIKIO
IPC分类号： G02B6/00 , B24B19/00
摘要： PROBLEM TO BE SOLVED: To provide a device and a method to grind the light emission surface of a ring light with angles smoothly. SOLUTION: A grinding jig 1, which has the cone shape of a truncated cone in the side and the outside is a grinding surface, and a ring light 7 are held axially so that the grinding surface of the grinding jig and the light emission surface of the ring light may face each other by using a grinding jig holding unit 2 and a ring light holding unit 3, respectively, and are mounted on an installation stand 5 which has a moving unit to transfer the grinding jig and ring light in an axial direction. The moving unit of the installation stand is moved in an axial direction so that the grinding surface of the grinding jig and the light emission surface of the ring light come in contact. At least either one of the grinding jig or the ring light is rotated making a said shaft to be a rotating shaft using a rotation drive unit 4 while adjusting contact pressure of the grinding jig and the ring light using a pressure regulation measure 6.

3. 发明专利

JPH07320557A MARK TUBE 失效
公开(公告)号：JPH07320557A
公开(公告)日：1995-12-08
申请号：JP10560694
申请日：1994-05-19
申请人： MITSUBISHI RAYON CO
发明人： TOKUDA SHUICHIRO , SERA MIKIO
IPC分类号： H01B7/36
摘要： PURPOSE:To fix a mark tube simply to a cable and to facilitate work even in a construction site, so that the mark tube can correspond to various cables of different diameter, by forming a sectional shape of the mark tube in a flat ring shape particularly in an elliptic shape. CONSTITUTION:In a mark tube 2, since its sectional shape is an elliptic ring shape, when the mark tube is provided in the periphery of a cable 1, an internal peripheral surface of the mark tube 2 in a minor diameter side is brought into contact with partly an external surface of the cable 1, and by this friction force, the mark tube 2 is fixed to the cable 1. On the other hand, the internal peripheral surface of the mark tube in a major diameter side is not brought into contact with the external surface of the cable 1. In this way, the mark tube is fixed by a suitable degree, and also the mark tube can be easily slid by hand or the like.

4. 发明专利

JPH07234319A OPTICAL FIBER SENSOR HEAD 失效
公开(公告)号：JPH07234319A
公开(公告)日：1995-09-05
申请号：JP2540894
申请日：1994-02-23
申请人： MITSUBISHI RAYON CO
发明人： SERA MIKIO , OKURA TAKEO
IPC分类号： G01B11/00 , G02B6/00 , G02B6/02
摘要： PURPOSE:To make it possible to arbitrarily adjust a beam angle of emission/ reception by obtaining an optical fiber sensor head which is capable of discriminating individual works of a small detection region, has god resolution, is sharp in rising of sensor output and has an excellent detection sensitivity and roughening the outer peripheral surface of a fiber and changing the length of processing to arrange light absorption layers in a preferable state. CONSTITUTION:This optical fiber sensor head has an optical fiber 1 for light transmission consisting of the fiber 2 and the sheath 3 and the outer peripheral surface 4 of the fiber 2 of the optical fiber 1 is roughened by the length L at the front end of the optical fiber 1. The light absorption layer 5 is formed on the roughened outer peripheral surface 4 of the fiber. Plural pieces of the optical fibers 6 for light reception are formed on the outer periphery of the front end of the optical fiber 1 for light transmission and a mouthpiece 7 is formed on the outermost periphery. The transmitted light beam is converged to an opening angle theta.

5. 发明专利

JPH07120622A OPTICAL FIBER POINT SENSOR HEAD 失效
公开(公告)号：JPH07120622A
公开(公告)日：1995-05-12
申请号：JP26511693
申请日：1993-10-22
申请人： MITSUBISHI RAYON CO
发明人： SERA MIKIO , INAI SHIGERU , KAWASHIMA TAKAO
IPC分类号： G02B6/44 , G01J1/02 , G02B6/00 , G02B6/24
摘要： PURPOSE:To provide an optical fiber point sensor head of high reliability with little possibility of an optical fiber cable coming off the sensor head by engaging and fixing the sensor head and the optical fiber cable rigidly making effective use of extra length tension members. CONSTITUTION:The optical fiber point sensor head 1 is fixedly mounted and fixed to the end part of an optical fiber cable 4 with tension members 3 disposed between outer coating material 6 and a jacket 5. This sensor head 1 is formed out of a tip mouthpiece 10 having a first through hole 11 for inserting optical fiber, and a mouthpiece body 7 with a second through hole 8 formed so as to insert the tip mouthpiece 10 from one end and to insert the optical fiber cable 4 with the extra length tension embers 3 coming out, from the other end. At the time of inserting the tip mouthpiece 10, the extra length tension members 3 is fixed in pressure contact between the outer peripheral surface of the pressure contact fixing part 12 of the tip mouthpiece 10 and the inner peripheral surface of the mouthpiece body 7.

6. 发明专利

JPH06294742A OPTICAL FIBER SENSOR HEAD 失效
公开(公告)号：JPH06294742A
公开(公告)日：1994-10-21
申请号：JP8443693
申请日：1993-04-12
申请人： MITSUBISHI RAYON CO
发明人： KAWASHIMA TAKAO , INAI SHIGERU , SERA MIKIO
IPC分类号： G01N21/84 , A61B1/00 , G02B6/00 , G02B23/26
摘要： PURPOSE:To provide an optical fiber sensor head in which an optical fiber is held at one end of a through hole for a holding sleeve, a reflector for reflecting the light to a window made in the side wall and the optical fiber is disposed at the other end of the through hole, and the sleeve is coated with a liquid resistant protective tube. CONSTITUTION:The sensor head comprises a holding sleeve 3 for holding an optical fiber 1 inserted from one end of a through hole and a window 2 is provided in the side wall, and a reflector 5 disposed at the other end of the through hole and reflecting the light from the end face of the optical fiber 1 to the window 2 or vice versa. The head further comprises a pinhole 8 abutting on the end face of the optical fiber 1, a rod lens 7 interposed between the pinhole 8 and the reflecting face 4, and a liquid resistant protective tube 6 covering the entirety of sleeve 3 and the optical fiber 1 exposed therefrom. The tube 6 entirely covers the head and the material thereof is selected appropriately depending on the liquid touching thereto. This structure enhances reliability in detection and chemical resistance.

7. 发明专利

JPH055321B2 失效
公开(公告)号：JPH055321B2
公开(公告)日：1993-01-22
申请号：JP8329586
申请日：1986-04-11
申请人： MITSUBISHI RAYON CO
发明人： KICHIJI HIROSHI , FUJINAGA YOSHIKAZU , SERA MIKIO
IPC分类号： G02B6/00 , B26D1/06 , B26D3/00 , G02B6/24 , G02B6/25

8. 发明专利

JPS62170904A CUTTING METHOD FOR PLASTIC OPTICAL FIBER 失效
公开(公告)号：JPS62170904A
公开(公告)日：1987-07-28
申请号：JP1261186
申请日：1986-01-23
申请人： MITSUBISHI RAYON CO
发明人： KICHIJI HIROSHI , FUJINAGA YOSHIKAZU , SERA MIKIO
IPC分类号： G02B6/00 , B26D1/06 , B26D3/00 , G02B6/02 , G02B6/10
摘要： PURPOSE:To obtain a smooth cut face by imposing a plastic optical fiber on a receiving plate, and executing the primary cutting and secondary cutting at different points of a cutting blade or by changing the cutting blade. CONSTITUTION:The plastic optical fiber 2 is imposed on the receiving plate 4 having a sheet consisting of a polytetrafluoroethylene on the uppermost layer. The cutting blade 1 is pressed to the point longer than a prescribed length and the fiber is cut at the point (a). The edge of the cutting blade 1 incises the fiber smoothly down to a depth A and thereafter the optical fiber 2 is torn apart by tensile force and is cut in the ruptured state. The optical fiber 2 is then moved or the cutting blade 1 is moved so that the cutting at the prescribed length can be made; in addition, the cutting blade 1 is moved in the direction orthogonal with the optical fiber 2 and the fiber is cut at the point (b). Since the thickness of swarf 3 is small, the swarf is successively curved and cut off and the fiber is not ruptured. The smoothness of the cut face is thereby improved.

9. 发明专利

JPS57181510A TREATMENT OF END OF PLASTIC OPTICAL FIBER 失效
公开(公告)号：JPS57181510A
公开(公告)日：1982-11-09
申请号：JP6578881
申请日：1981-04-30
申请人： MITSUBISHI RAYON CO
发明人： KAWAKUBO HIROYUKI , TAWARA YASUTERU , SERA MIKIO
IPC分类号： G02B6/32 , G02B6/25 , G02B6/255
摘要： PURPOSE:To simply treat an end of a plastic optical fiber with accuracy comparable to the accuracy of a polishing finish and to reduce the cost by swelling and shaping the cut face of the fiber by heating. CONSTITUTION:A plastic optical fiber 1 is composed of methacrylic resin for the core and fluororesin for the sheath or styrene resin for the core and methacrylic resin for the sheath. The fiber 1 is cut to a slightly larger length than the prescribed length with a cutter 2 such as nippers or scissors, and it is further cut by a small thickness with a fine-edged cutter 3 such as a razor to make the cut face smooth. This cut face is brought close to a heat source 4 and heated. Since the fiber 1 has been drawn during manufacture, the cut face is swollen in the diametrical direction by the heating to form a swollwn part 1a. Stress produced during the cutting is relieved in the heated cut face, and the surface of the swollen part 1a is smoothly finished by deformation caused when the end is swollen.

10. 发明专利

JPS5251957A MEASURING LIGHT TRANSMISSION LOSS OF OPTICAL MATERIAL 失效
公开(公告)号：JPS5251957A
公开(公告)日：1977-04-26
申请号：JP12770475
申请日：1975-10-23
申请人： MITSUBISHI RAYON CO
发明人： TAWARA YASUTERU , MINAMI SHIYUNSUKE , ODA MASAHARU , SERA MIKIO
IPC分类号： G01M11/00 , G01M11/02 , G01N21/59 , G02B6/00
摘要： PURPOSE:To render possible a continuous measurement without cutting an optical material by permitting light to fall on the side or end of the optical material and to progress through the portion being measured and detecting the quantities of light radiated from both sides thereof.

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