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1. 发明专利

JPH04324404A SYNTHETIC RESIN OPTICAL TRANSMISSION BODY AND OBJECT DETECTING SENSOR USING THE BODY 失效
公开(公告)号：JPH04324404A
公开(公告)日：1992-11-13
申请号：JP9414991
申请日：1991-04-24
申请人： HITACHI CABLE , HITACHI LTD
发明人： ISHIBASHI TAKANOBU , ABE TOMIYA , ASANO HIDEKI , ANDO YOSHIYUKI , TAKEYA NORIAKI , SHIMURA MASATO , TANNO SEIKICHI , OHARA SHUICHI
IPC分类号： G01B11/00 , G01V8/16 , G02B6/00 , G02B6/12 , G02B6/122
摘要： PURPOSE:To facilitate the selection of the material of a clad substrate and to prevent the influence of dust, etc., at the time of using the optical transmission body as a sensor. CONSTITUTION:The clad substrate 2 consisting of the synthetic resin enclosing a core 3 of the synthetic resin optical transmission body 1 constituted by forming the surface of the clad substrate 2 in contact with the core 3 to the refractive index lower than the refractive index of the core 3 is formed of a synthetic resin substrate 5 and a skin layer 8 to serve as the clad part formed by being clad on the surface of the synthetic resin substrate 5 enclosing the core 3. The synthetic resin substrate 5 is constituted of a material having the higher mechanical strength than the mechanical strength of the skin layer 8 and having high heat resistance. The skin layer 8 is constituted of a material having the refractive index lower than the refractive index of the core 3. A cleaning body having the good sliding characteristic to remove the dust, etc., by sliding with an object to be detected is provided on the substrate at the time of forming this synthetic resin optical transmission body 1 as an object detecting sensor.

2. 发明专利

JPH04190204A PLASTIC OPTICAL FIBER AND MANUFACTURE THEREFOR 失效
公开(公告)号：JPH04190204A
公开(公告)日：1992-07-08
申请号：JP31863790
申请日：1990-11-24
申请人： HITACHI LTD , HITACHI CABLE
发明人： TANNO SEIKICHI , TAKEYA NORIAKI , SHIMURA MASATO , TAKEZAWA YOSHITAKA , AKASAKA SHINICHI , OHARA SHUICHI , ASANO HIDEKI
IPC分类号： G02B6/44
摘要： PURPOSE:To obtain plastic optical fibers having excellent oil resistance, gas resistance and heat resistance by causing an inorganic filler to be contained in at least a surface layer of a clad or jacket, and causing a metal plating layer to be applied onto this surface layer. CONSTITUTION:Using a mixture composition of a copper powder and a powder or pellets of a fluorine-containing resin and an olefinic resin, a tube having an inside diameter of 1.5mm and an outside diameter of 2.5mm is prepared with use of an extruder. Next, a monomer composition composed of 90g methylmethacrylate, 10g ethylene glycol di-methacrylate and 0.5 lauroyl peroxide is charged into the tube, and this composition is heated under pressure at 100 deg.C for one hour for polymerization. Then, the polymerized mass is heated under normal pressure at 120 deg.C for 8 hours and thus is completely polymerized to obtain optical fibers. Next, chemical copper plating is applied to the outer periphery of the optical fibers, i.e., the outside of the tube consisting of FEP and copper powder and thereafter electric copper plating is carried out with respect thereto.

3. 发明专利

JPH0429204A OPTICAL FIBER MADE BY SYNTHETIC RESIN AND OPTICAL TRANSMISSION EQUIPMENT USING THIS FIBER 失效
公开(公告)号：JPH0429204A
公开(公告)日：1992-01-31
申请号：JP13623490
申请日：1990-05-25
申请人： HITACHI LTD , HITACHI CABLE
发明人： TANNO SEIKICHI , TAKEYA NORIAKI , TAKEZAWA YOSHITAKA , SHIMURA MASATO , OHARA SHUICHI , ASANO HIDEKI , ABE TOMIYA , TAGAMI MASATOSHI , ASAI TAKAYASU
IPC分类号： G02B6/00 , G02B6/44
摘要： PURPOSE:To prevent gas or liquid from penetrating a clad or a jacket by adding scaled inorganic matters to the clad and/or the jacket and orientating their flat faces opposite to the surface of the clad or the jacket. CONSTITUTION:The effective amount of scally inorganic matters 6 is mixed in a base material resin 7, and this composition is fused by heat to form a clad 2 and a jacket 3 by extrusion, and flat faces of scales of most of added scally inorganic matters 6 are orientated approximately opposite to the surface of the clad 2 or the jacket 3 by flow of the fused resin and stretching. Since scally inorganic material 6 do not permit gas and liquid to pass through, the path of lubricant 8 penetrating from the external is extended by orientated scally inorganic matters 6 and it is difficult for the lubricant 8 to pass through the base material resin part 7. Thus, an optical fiber is obtained which is made of resin and has the clad 2 and the jacket 3 through which liquid hardly passes.

4. 发明专利

JPS63293508A LIGHT TRANSMISSION BODY MADE OF SYNTHETIC RESIN 失效
公开(公告)号：JPS63293508A
公开(公告)日：1988-11-30
申请号：JP12833787
申请日：1987-05-27
申请人： HITACHI LTD , HITACHI CABLE
发明人： TANNO SEIKICHI , TAKEYA NORIAKI , EGUCHI KUNIYUKI , SHIMURA MASATO , ABE TOMIYA , ASANO HIDEKI
IPC分类号： G02B6/00 , C08F12/00 , C08F212/08
摘要： PURPOSE:To improve both the heat resistance and flexibility of a light transmission body by copolymerizing a compsn. contg. an arom. vinyl compd. and multifunctional monomer as essential components to form a core. CONSTITUTION:The core of the light transmission body made of a synthetic resin consisting of a core-clad structure consists of the polymer of the compd. contg. the arom. vinyl compd. (A) and the multifunctional monomer (B) as the essential components. The content of the component B is preferably 3wt.%. The above-mentioned compsn. consists preferably of the component A (e.g.: styrene), the monofunctional monomer expressed by formula I, the divinylbenzene, the multifunctional monomer expressed by formula II and antioxidant as the essential components. In formulas, R1, R3, R4 denote H, CH3; R2 denotes alkyl of 1-18C, etc. This light transmission body is produced by filling the compsn. into, for example, a 'Teflon(R)' tube (clad) and copolymerizing the same.

5. 发明专利

JPS63256902A LIGHT TRANSMISSION BODY MADE OF SYNTHETIC RESIN 失效
公开(公告)号：JPS63256902A
公开(公告)日：1988-10-24
申请号：JP9077787
申请日：1987-04-15
申请人： HITACHI LTD , HITACHI CABLE
发明人： TANNO SEIKICHI , TAKEYA NORIAKI , EGUCHI KUNIYUKI , SHIMURA MASATO , ABE TOMIYA , ASANO HIDEKI
IPC分类号： G02B6/00 , C08F20/10 , C08F220/12 , C08F220/26 , C08F290/00 , C08F299/02
摘要： PURPOSE:To permit obtaining of excellent heat resistance and flexibility by copolymerizing compsns. contg. a specific monofunction monomer and multifunctional monomer as essential components, thereby obtaining a core. CONSTITUTION:The compsns. contg. the monofunctional monomer expressed by formula I and the multifunctional monomer expressed by formula II are copolymerized as the core material for a light transmission body made of a synthetic resin. In formula I, R1 is H or CH3; R2 is H or an alkyl group of 1-18C, etc. In formula II, R3, R4 are H or group selected from CH3; (n) is 1-23 integer. Generation of deformation by heating as the light transmission body is, therefore, obviated. Compatibility of flexibility and heat resistance of the light transmission body is thereby attained.

6. 发明专利

JPH04125502A RESIN-MADE OPTICAL CIRCUIT BOARD AND ITS MANUFACTURE, AND DOMESTIC ELECTRIC APPLIANCE USING THE SAME 失效
公开(公告)号：JPH04125502A
公开(公告)日：1992-04-27
申请号：JP24647290
申请日：1990-09-17
申请人： HITACHI LTD , HITACHI CABLE
发明人： TAKEYA NORIAKI , TANJI SEIKICHI , OKABE YOSHIAKI , SHIMURA MASATO , TAKEZAWA YOSHITAKA , OHARA SHUICHI , ASANO HIDEKI , ABE TOMIYA , ISHIBASHI TAKANOBU
IPC分类号： G02B6/122 , G02B6/12 , G02B6/13
摘要： PURPOSE:To obtain the inexpensive optical circuit board which has superior optical characteristics and large mechanical strength by constituting a clad part in two-layered structure of a substrate and a skin layer covering its surface. CONSTITUTION:The clad part is constituted in the two-layered structure of the substrate 1 and the skin layer 2 which covers its surface; and the substrate 1 of the clad part is formed of a material which has larger mechanical strength and higher heat resistance than the skin layer 2, which is formed of a material which has a lower refractive index than a core part 1. Consequently, only the skin layer positioned at the periphery of the core part is considered as to the low refractive index of the clad material 1 and an inexpensive material which is easily obtained in consideration of mechanical strength and heat resistance can be selected as the substrate material of the clad part 1 without considering the refractive index. Namely, the mechanical strength and heat resistance of the clad part of the optical circuit board are obtained with the substrate and the optical characteristics are realized with the skin layer; even when inexpensive fluororesin of several mum order in actual use is used for the skin layer, the price is made lower than before.

7. 发明专利

JPH02228610A PLASTIC OPTICAL FIBER 失效
公开(公告)号：JPH02228610A
公开(公告)日：1990-09-11
申请号：JP4655489
申请日：1989-03-01
申请人： HITACHI LTD , HITACHI CABLE
发明人： TAKEZAWA YOSHITAKA , OKABE YOSHIAKI , TANNO SEIKICHI , TAKEYA NORIAKI , SHIMURA MASATO , ABE TOMIYA , ASANO HIDEKI
IPC分类号： G02B6/00 , C08F20/10
摘要： PURPOSE:To obtain the plastic optical fiber having particularly excellent heat resistance by forming a core of a crosslinkable resin which is substantially constituted of a specific monomer. CONSTITUTION:The crosslinkable resin substantially constituted of the monomer optical fiber expressed by formula I where R denotes 1 to 10C org. group and X is F, Cl, Br is used for the core. The resin for the core material is essentially required to be the crosslinkable resin in order to improve heat resistance. The chief material of the core material is required to be crosslinked by copolymerizing a multifunctional monomer as an auxiliary component in the case of using a monofunctional monomer as the above-mentioned chief material. The addition of a stabilizer, such as antioxidant, into the monomer at the time of polymn. is possible in order to improve the heat resistance. The well balanced plastic optical fiber is obtd. by using fluoroplastic resin having the excellent heat resistance and low refractive index for the clad material. The plastic optical fiber which can maintain >=90% holding rate of light quantity for >=1,000 hours in the air of 150 deg.C and has the excellent heat resistance is obtd. in this way.

8. 发明专利

JPH01302302A PLASTIC OPTICAL FIBER 失效
公开(公告)号：JPH01302302A
公开(公告)日：1989-12-06
申请号：JP13158588
申请日：1988-05-31
申请人： HITACHI LTD , HITACHI CABLE
发明人： TAKEZAWA YOSHITAKA , TAKEYA NORIAKI , TANNO SEIKICHI , SHIMURA MASATO , ABE TOMIYA , ASANO HIDEKI
IPC分类号： G02B6/00
摘要： PURPOSE:To improve heat resistance by using a crosslinkable resin essentially consisting of a fluorine-contg. polymerizable monomer as a core material. CONSTITUTION:This optical fiber has the core consisting of the crosslinkable resin essentially consisting of the fluorine-contg. polymerizable monomer and the clad consisting of a resin having the refractive index lower than the refractive index of the core material. The fluorine-contg. monomer is substantially used for the essentially component of the crosslinkable resin used for the core material and a multifunctional monomer and monofunctional monomer are used for the auxiliary component of said resin. The resin consists preferably of the copolymer of 3-5 kinds of the polymerizable monomers. The plastic optical fiber having excellent heat resistance, light transmittability and flexibility is obtd. in this way.

9. 发明专利

JPS6425107A OPTICAL BRANCHING/COUPLING DEVICE MADE OF PLASTIC 失效
公开(公告)号：JPS6425107A
公开(公告)日：1989-01-27
申请号：JP18101387
申请日：1987-07-22
申请人： HITACHI LTD , HITACHI CABLE
发明人： SUGAYA ATSUSHI , IBAMOTO MASAHIKO , SHIMURA MASATO , ABE TOMIYA
IPC分类号： G02B6/26 , G02B6/28
摘要： PURPOSE:To easily produce a high-performance coupling/branching device by sealing a specific resin into a prescribed resin tube and inserting plastic optical fibers into both ends of the tube. CONSTITUTION:Metallic molds 2, 3, the central pars of which are constricted in the thickness direction and both ends of which have circular holes respectively on the upper and lower sides, are prepd. The tube 1 made of, for example, the heat shrinkable resin which is lower in refractive index than the cores of the plastic optical fibers and is transparent, is inserted between the molds 2 and 3 and is heated under pressurization to produce the resin tube 4. For example, a thermosetting resin 8 having the same refractive index as the refractive index of the above-mentioned cores is then put into the tube 4 and the fibers 5 are inserted into both ends of the tube 4. The resin 8 is cured and the tube 4 is shrunk by a heat source 9. The branching/coupling device with 2X2-, 1X2-bends, etc., is thus produced.

10. 发明专利

JPH01109310A PLASTIC OPTICAL FIBER CONNECTING TUBE 失效
公开(公告)号：JPH01109310A
公开(公告)日：1989-04-26
申请号：JP26642887
申请日：1987-10-23
申请人： HITACHI LTD , HITACHI CABLE
发明人： SHIMURA MASATO , IBAMOTO MASAHIKO , SUGAYA ATSUSHI , ABE TOMIYA
IPC分类号： G02B6/24
摘要： PURPOSE:To easily and surely connect plastic optical fibers with a small connection loss by using a connector formed by putting a transparent adhesive agent into a connecting tube. CONSTITUTION:The low-viscosity adhesive agent or resin raw material is stably held in the joining tube 1 by enclosing the transparent adhesive agent 2 with films 3. The films 3 are ruptured by the insertion pressure of the fibers. The refractive index of the films 3 is equaled or approximated to the refractive index of the adhesive agent after curing to prevent the increase in scattering and absorbing even when the films remain. The cured film of the adhesive agent is effective and the loss is additionally decreased if the raw material resin of the core is used for the adhesive agent. The smooth insertion is assured if a discharge hole for the excess resin is provided near the joint part at the time of insertion. The intrusion of air bubbles is effectively prevented by finely drawing a part of the joint tube toward the center. The use of a heat-shrinkable tube is a good alternative. The adhesion by using the adhesive agent of a curing type by mixing is successively executed by partitioning the components by a film and rupturing the partition by insertion of the fibers.

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