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51. 发明专利

JPH046526A LIGHT CONTROL ELEMENT 失效
公开(公告)号：JPH046526A
公开(公告)日：1992-01-10
申请号：JP10942090
申请日：1990-04-24
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： IKENO SHINOBU , KODERA KOHEI , TAKAGI KOJI , KOBAYASHI FUMIAKI , SETO KAZUO
IPC分类号： G02F1/1333 , G09F9/00
摘要： PURPOSE:To provide high light resistance and chemical stability (weatherability) and to prolong a life by forming a transparent medium of transparent inorg. matter. CONSTITUTION:This light control element is constituted by inserting a liquid crystal layer 1 formed by dispersing a liquid crystal 10 into the transparent medium 11 between a pair of electrodes 2a and 2b which face each other and at least either of which is transparent. The transparent medium 11 of such light control element is the transparent inorg. matter. The transparent inorg. medium is not particularly limited, insofar as the medium is the transparent inorg. matter having high light resistance and chemical stability and is preferably the inorg. matter formed by bringing, for example, metal alkoxide into sol-gel reaction, etc. If the transparent inorg. matter is used as the transparent medium in such a manner, the light resistance and chemical stability (weatherability) of the light control element are enhanced and the life of the light control element is improved as the inorg. matter has generally the high light resistance and chemical stability.

52. 发明专利

JPH03167429A SPLIT-LIGHTGUIDE TYPE SENSOR 失效
公开(公告)号：JPH03167429A
公开(公告)日：1991-07-19
申请号：JP30708589
申请日：1989-11-27
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： KODERA KOHEI , TAKAGI KOJI , IKETANI SHINICHI
IPC分类号： G01D5/353 , G01D5/26 , G01J1/02 , G01N21/17 , G02B6/12 , G02B6/122 , G02B6/28
摘要： PURPOSE:To make a sensor compact and to achieve an integrated pattern by using one of a plurality of split lightguides as a reference lightguide, and using the other lightguide for sensing environment factors. CONSTITUTION:On a substrate 2, a reference lightguide 1b and sensing lightguides 1a and 1c are provided. Sensing regions A and A' are provided on the lightguides 1a and 1c. A surface clad layer 5 is formed on the surfaces of the lightguides. The light which is inputted into the lightguide 1 from a light emitting element 3 is split into three directions at a splitting part, propagated through 1a - 1c and inputted into light receiving parts 4a - 4c in a photodetector array. When environment factors wherein the sensor is provided are changed, the propagating losses in the lightguides 1a and 1c are changed. Therefore, the amounts of output lights P1 and P3 are changed. The amount of output light P2 in the lightguide 1b is hardly changed. Then, the fluctuation in the element is cancelled by monitoring the value of P1/P2 or P3/P2, and the changes in environmental factors can be taken out.

53. 发明专利

JPH0290109A OPTICAL CIRCUIT BOARD AND ITS MANUFACTURE 失效
公开(公告)号：JPH0290109A
公开(公告)日：1990-03-29
申请号：JP24331288
申请日：1988-09-27
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： TAKAGI KOJI , NAKAMURA MASASHI , IKETANI SHINICHI , KODERA KOHEI
IPC分类号： G02B6/122 , G02B6/12 , G02B6/13
摘要： PURPOSE:To obtain an optical circuit board which hardly produces crosstalk and is low in propagation loss by forming a resin layer containing a light absorbing agent and/or light scattering blocking agent on the outside of the clad of a core through which light is transmitted. CONSTITUTION:This optical circuit board 1 is constituted of four layers of a core 11, the clad layer 12 of the core 11, resin layer 13 containing a light absorbing agent and/or light scattering blocking agent, and substrate 14 holding the layers. The resin layer 13 is formed on the outside of the clad layer 12. Because of the resin layer 13, the light leaking out from the core 11 hardly goes out from the clad layer 12 and outside light hardly get into the core 11 through the clad layer 12. In addition, the light (stray light) getting out from the core 11 of a certain optical waveguide can be reduced by the resin layer 13 which absorbs the stray light and blocks the scattering of the stray light. Therefore, crosstalk can be prevented and the propagation loss of the optical circuit board can be reduced.

54. 发明专利

JPH0290108A OPTICAL CIRCUIT BOARD AND ITS MANUFACTURE 失效
公开(公告)号：JPH0290108A
公开(公告)日：1990-03-29
申请号：JP24331088
申请日：1988-09-27
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： KODERA KOHEI , NAKAMURA MASASHI , TAKAGI KOJI , IKETANI SHINICHI
IPC分类号： G02B6/122 , G02B6/12 , G02B6/13
摘要： PURPOSE:To obtain an optical circuit board which is less in crosstalk to be caused by disturbance light and leaked light and excellent in signal transmitting reliability with reduced noise by forming a metallic layer on the outside of the clad layer of a core through which light is transmitted. CONSTITUTION:This optical circuit board 1 is constituted of four layers of a core 4 through which light is transmitted, clad layer (an area which encloses the core and is lower in refraction than the core) 3 of the core 4, a metallic layer 2, and a substrate 1 holding these layers. The metallic layer 2 is formed on the outside of the clad layer 3. Since the metallic layer works as a light reflecting/absorbing layer which reflects and absorb light, the light leaking out from the core 4 hardly goes out from the clad layer 3 and outside light hardly gets into the core 4 through the clad layer 3. In addition, the light of an external light source (a light emitting element or another core) which cannot enter the core 4, but is propagated through the substrate 1 can be blocked by the metallic layer 2. Therefore, crosstalk is prevented, noise is reduced, and the signal transmitting reliability of the circuit is improved.

55. 发明专利

JPH01299807A CURABLE RESIN COMPOSITION AND OPTICAL WAVEGUIDE USING IT AS CORE MATERIAL 失效
公开(公告)号：JPH01299807A
公开(公告)日：1989-12-04
申请号：JP12863588
申请日：1988-05-26
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： NAKAMURA MASASHI , KODERA KOHEI , TAKAGI KOJI
IPC分类号： G02B6/12 , C08F20/10 , C08F20/22 , C08F220/22 , C08F290/00 , C08F299/00 , G02B6/00
摘要： PURPOSE:To obtain the title compsn. having a high refractive index and excellent adhesiveness after curing for a short time, by adding an amt. in a specified range of a photo- and/or thermal polymn. initiators to a photo- and/or a thermally polymerizable monomers contg. a specified (meth)acrylate. CONSTITUTION:A curable resin compsn. is obtd. by adding 0.01-10 pts.wt. photo- and/or thermal polymn. initiators (B) (e.g., benzoin methyl ether, benzoyl peroxide, etc.) to 100 pts.wt. photo-and/or thermally polymerizable monomers (A) contg. a (meth)acrylate of formula I [wherein R is H or CH3; R is a group of formula II or formula III (wherein n1 is 1-5; m is 1-4)] contg. at least an etherified compd. of a brominated phenol in the alcoholic part of the ether. A cured resin having a high refractive index (e.g., 1.56) and excellent adhesiveness is obtd. after curing for a short time by using said curable resin compsn. Moreover, as this cured substance has excellent transparency, it is useful for a material for various optical members.

56. 发明专利

JPH01156693A OPTICAL SENSOR 失效
公开(公告)号：JPH01156693A
公开(公告)日：1989-06-20
申请号：JP31668987
申请日：1987-12-15
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： KANBE YOSHIAKI , KODERA KOHEI , NAKAMURA MASASHI
IPC分类号： G01V8/16 , G01C3/00 , G01C3/06 , G02B6/00 , G02B6/12 , G02B6/122
摘要： PURPOSE:To obtain an optical sensor which is free from a malfunction caused by a mutual interference, and also, whose assembling work is simple by mixing a filter material for absorbing a light beam, into a clad substrate of an optical wiring board in which a core material of an optical waveguide is embedded. CONSTITUTION:In the optical sensor in which an electronic circuit part, an operation display part and a sensor function setting part have been brought to optical connection by an optical wiring board 30, the optical wiring board 30 is formed by burying a core material for forming an optical waveguide 31 into a clad substrate. In that case, by using a clad substrate in which a filter material for absorbing a light beam has been mixed, as the clad substrate of the optical wiring board 30, a light leakage in the optical wiring board 30 is prevented. In such a way, the number of parts is decreased and the assembling work can be simplified, and also, the sensor can be miniaturized and its cost can be reduced, and a malfunction caused by a mutual interference of light can be prevented.

57. 发明专利

JPS63293509A PRODUCTION OF OPTICAL CIRCUIT BOARD 失效
公开(公告)号：JPS63293509A
公开(公告)日：1988-11-30
申请号：JP12919387
申请日：1987-05-26
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： KODERA KOHEI , NAKAMURA MASASHI
IPC分类号： G02B6/13 , G02B6/12
摘要： PURPOSE:To easily and inexpensively produce an optical circuit board which decreases the propagation loss of light and has high accuracy by filling a resin to serve as a core into grooves formed on the surface of a planar substrate, then sticking a cover constituting a part of a clad to the apertures of the grooves. CONSTITUTION:The curable resin 2 is filled into the grooves 11 formed on the surface of the planar substrate 1 and the cover 3 is put and pressed on the substrate surface to spread the bleeding out resin, by which the cover 3 is stuck to the substrate. The inside wall surfaces of the grooves and the surface of the cover in contact with the grooves are finished to specular surfaces so that the refractive index after curing of the resin is made higher than the refractive index of the cover 3. Light guides 4 formed in such a manner decreases the propagation loss of light. The optical circuit board having high accuracy is thus easily and expensively produced.

58. 发明专利

JPS63137498A MANUFACTURE OF THROUGH-HOLE PRINTED BOARD 失效
公开(公告)号：JPS63137498A
公开(公告)日：1988-06-09
申请号：JP28544486
申请日：1986-11-28
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： KODERA KOHEI , NAKAMURA MASASHI
IPC分类号： H05K3/40

59. 发明专利

JPS63118336A PRODUCTION OF METALLIC FOIL-CLAD LAMINATE 失效
公开(公告)号：JPS63118336A
公开(公告)日：1988-05-23
申请号：JP27114787
申请日：1987-10-27
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： MIWA AKITSUGU , KODERA KOHEI
IPC分类号： B32B15/08 , B29C65/52 , B29L9/00 , B32B7/12 , C08J5/12 , H05K3/02 , H05K3/38
摘要： PURPOSE:To continuously contrive to improve peel strength at high temperature and to reduce warpage in obtaining a metallic foil-clad laminate by laminating a metallic foil coated with an adhesive to an unsaturated resin impregnated substrate and curing the unsaturated resin under heating and under no pressure, by using a specific vinyl ester resin adhesive. CONSTITUTION:A metallic foil (e.g. copper foil, etc.) is coated with an adhesion layer of a vinyl ester resin adhesive containing 1-10wt% noncrystalline saturated polyester having

60. 发明专利

JPS61117882A Printed circuit board 失效
公开(公告)号：JPS61117882A
公开(公告)日：1986-06-05
申请号：JP23990384
申请日：1984-11-14
申请人： Matsushita Electric Works Ltd
发明人： KODERA KOHEI , INOUE HIROO
IPC分类号： H05K1/02 , G02B6/122 , G02B6/42

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