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81. 发明专利

JPS6081031A MANUFACTURE OF OPTICAL ELEMENT 失效
公开(公告)号：JPS6081031A
公开(公告)日：1985-05-09
申请号：JP18804783
申请日：1983-10-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： OONO MASAYOSHI , YAMADA TAKESHI , KUROKAWA TAKASHI , TATE AKIYUKI
IPC分类号： C03B8/00 , C03B19/12 , C03B20/00 , C03C3/04 , C03C21/00 , C03C23/00 , G02B3/00 , G02B6/13
摘要： PURPOSE:To manufacture simply and inexpensively an optical element having a refractive index distribution by impregnating a metallic alcoholate into a porous or gelled glass substrate, carrying out patternwise exposure, and removing the metallic alcoholate in the unexposed part. CONSTITUTION:A porous or gelled glass substrate 10 is immersed in a soln. of a metallic alcoholate such as Si or Ge alcoholate in a vessel 11, and a layer 13 contg. the soln. 12 is formed in the substrate 10 up to a fixed depth from the surface by diffusing a fixed amount of the soln. 12 in the substrate 10. The layer 13 is exposed through a photomask 14, and the metallic alcoholate in the exposed part is made solid by a reaction and fixed in the substrate 10. The substrate 10 is then immersed in an org. solvent such as methanol to extract and remove the unreacted metallic alcoholate in the unexposed part, and it is dried to obtain an optical element having a patterned part 15 which is different from other part in refractive index in the substrate 10.

82. 发明专利

JPS6077476A WAVEGUIDE LASER AND MANUFACTURE THEREOF 失效
公开(公告)号：JPS6077476A
公开(公告)日：1985-05-02
申请号：JP18455183
申请日：1983-10-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA TAKESHI , KUROKAWA TAKASHI , OONO MASAYOSHI , TATE AKIYUKI
IPC分类号： H01S3/08 , H01S3/063
摘要： PURPOSE:To obtain a waveguide laser having large power without using a resist by providing a laser light emitting substance and a glass thin waveguide having a resonance structure on a substrate. CONSTITUTION:A diffraction grating 2 is formed on the surface of a glass substrate 1, and a thin glass film 3 having high refractive index including laser light emitting substance is covered thereon. With the construction thus formed, an exciting light is emitted from the waveguide direction in the entire surface of the film 3 or in the surface of the film 3, and a laser light 4 is emitted from the end of the film 3. When forming this laser, the substrate 1 formed with diffraction grating is dipped in a solution which contains tetramethoxy silane, water and methanol of 1:4:4 of molar ratio, the substrate 1 is then removed, dipped in a mixture solution which contains tetramethoxy germanium, rhodamine 6G, removed and dried. Thus, a waveguide of two- or three-dimentional structure such as a mirror, a diffracting grating, or ring shape is obtained.

83. 发明专利

JPS6075804A PRODUCTION OF THREE-DIMENSIONAL PATTERN 失效
公开(公告)号：JPS6075804A
公开(公告)日：1985-04-30
申请号：JP18309483
申请日：1983-10-03
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA TAKESHI , KUROKAWA TAKASHI , OONO MASAYOSHI , TATE AKIYUKI
IPC分类号： G02B6/04 , G02B6/12 , G02B6/13
摘要： PURPOSE:To gel and dry alcoholate in the part irradiated with light and to manufacture easily a three-dimensional pattern by installing base plates into a liquid consisting principally of metallic alcoholate, org. solvent and water and sinking gradually the base plates while irradiating a pattern by parallel light to the liquid surface. CONSTITUTION:Base plates 2 are installed into a liquid 5 consisting principally of at least one kind of metallic alcoholate, an org. solvent and water and while patterned parallel light 6 is irradiated to the surface of the liquid 5, the base plates 2 are gradually sunk into the liquid 5. The metallic alcoholate in the part irradiated with the light is thereby gelled and thereafter the base plates are taken out of the liquid 5 and are dried to shrink to a desired shape thereby manufacturing a three-dimensional pattern. The gel pattern obtd. in such a way can be gelled and embedded together with the other different compsn. into the base plates by dipping the plates in the liquid mixed with said compsn. The three-dimensional pattern is easily formed with the simple device without requiring high temp. as mentioned above, by which the three-dimensional pattern having good accuracy is obtd. and the method is usable for manufacturing, for example, a rod lens array, etc.

84. 发明专利

JPS6033512A PRODUCTION OF OPTICAL ELEMENT 失效
公开(公告)号：JPS6033512A
公开(公告)日：1985-02-20
申请号：JP14257983
申请日：1983-08-05
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA TAKESHI , KUROKAWA TAKASHI , OONO MASAYOSHI , TATE AKIYUKI
IPC分类号： G02B6/13 , G02B6/134 , G02B6/12
摘要： PURPOSE:To permit easy diffusion of ion, etc. by using porous glass obtd. by a sol-gel method. CONSTITUTION:A desired pattern is stuck to a glass plate obtd. By gelling and drying a soln. consisting essentially of at least one kind of metallic alcoholate, org. solvent and water and after metallic ion is diffused, the plate is dried. Alternately, a mask is stuck to a glass plate obtd. by adding org. ion further to the above-mentioned soln. and gelling and drying then the plate is immersed in a liquid which can elute the inorg. ion and is then dried. A prescribed pattern is provided to the glass plate obtd. by gelling and drying the above-mentioned soln. and the plate is immersed in the soln. of the metallic alcoholate to diffuse the metallic alcoholate to cause reaction and thereafter the plate is dried. The optical element obtd. in such a way is heated to >=500 deg.C. Such optical element is not required to be dipped for long time in a molten salt of a high temp., etc. and is usable for an optical waveguide, etc. with the simple device. A good operation is thus obtd.

85. 发明专利

JPS6033510A THREE-DIMENSIONAL OPTICAL CIRCUIT AND ITS PRODUCTION 失效
公开(公告)号：JPS6033510A
公开(公告)日：1985-02-20
申请号：JP14257783
申请日：1983-08-05
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA TAKESHI , KUROKAWA TAKASHI , TATE AKIYUKI , OONO MASAYOSHI
IPC分类号： G02B6/122 , G02B3/00 , G02B6/138 , G02B6/12
摘要： PURPOSE:To enable simultaneous production of core parts and clad parts by irradiating simultaneously the surface of a liquid mixture consisting essentially of monomers with UV light having low intensity and UV light which is patterned to a required shape and has high intensity. CONSTITUTION:UV light 4 having low intensity is irradiated to the liquid surface of a monomer liquid mixture 1 by a specular surface 5 and UV light 6 having high intensity is irradiated at the same time by a specular surface 7. A base plate 2 is gradually sunk into the mixture 1 in this stage, by which a polymer is formed. The part of the polymer irradiated by the light 4 having low intensity gels 8 as the polymn. is not thoroughly accomplished. The part irradiated by the light 6 having high intensity forms a polymer 9 in which the polymn. is more progressed. Such polymer is taken out of the mixture 1 and is impregnated with a monomer having the refractive index smaller than the refractive index of the monomers in the mixture 1. UV light is exposed over the entire surface thereof or the monomer is heated to be thoroughly polymerized. The core parts and clad parts are thus simultaneously produced.

86. 发明专利

JPS6017078A PRODUCTION OF MULTILAYERED THIN FILM 失效
公开(公告)号：JPS6017078A
公开(公告)日：1985-01-28
申请号：JP12468583
申请日：1983-07-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TATE AKIYUKI , YAMADA TAKESHI , KUROKAWA TAKASHI , OONO MASAYOSHI
IPC分类号： C23C16/48 , C23C16/44 , C23C16/455 , C23C16/54 , G02B1/10 , G02B1/11 , G02B1/115
摘要： PURPOSE:To form easily multilayered thin films of which the refractive indices change continuously or discretely at a low temp. by forming continuously the thin films by using a photovapor reaction and changing the compsn. of reactive gases so that the thin films are formed uniformly in a large area. CONSTITUTION:A gaseous phase reactant and an oxygen-contg. precursor are mixed with a diluting gas, carrier gas and sensitizing material to a prescribed compsn. ratio in feeder systems 7.1-7.7 including a control system for the flow rate thereof and are introduced into a reaction vessel 4 contg. a sample 1 on a susceptor 3. An electromagnetic wave 2 is then made incident to the vessel 4 through the light transmission window 5 thereof and the deposition of the multilayered dielectric film is started. The compsn. of the gaseous phase reactant in the above-described gaseous mixture is thereafter continuously changed by controlling the flow rate of the gases for the respective components with a flow rate control device in each device 7. The multilayered dielectric films of which the refractive index distributions are successively changed are thus formed on the substrate. The multilayered dielectric films having various refractive index distributions are obtd. according to the way of controlling the flow rate of the above-described gases in the above-mentioned way.

87. 发明专利

JPS58163924A THIN FILM TYPE OPTICAL DEFLECTOR 失效
公开(公告)号：JPS58163924A
公开(公告)日：1983-09-28
申请号：JP4770982
申请日：1982-03-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA TAKESHI , KUROKAWA TAKASHI , NARA SHIGEO
IPC分类号： G02F1/03 , G02F1/05 , G02F1/295
摘要： PURPOSE:To reduce the time required for deflection of light and to increase the speed of an optical switch by using a material having heat diffusivity of specific values as a substrate for a thin film type deflector which deflects light by applying high voltages to electrodes. CONSTITUTION:A substrate having >=7.8X10 cm /s diffusivity of heat such as alumina ceramics, quartz glass, steatite ceramics or the like is used as a substrate of a thin film type deflector wherein an optical circuit of a high polymer thin film type is adhered on a substrate provided with coplanar electrodes and deflects light by applying high frequency voltage to the electrodes. Thus, the time required for deflection of light is reduced, and the speed of the thin film type optical switch is increased.

88. 发明专利

JPS58120224A THIN FILM OPTICAL SWITCH 失效
公开(公告)号：JPS58120224A
公开(公告)日：1983-07-18
申请号：JP221382
申请日：1982-01-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA TAKESHI , KUROKAWA TAKASHI , NARA SHIGEO
IPC分类号： G02B6/12 , G02F1/03 , G02F1/05 , G02F1/313
摘要： PURPOSE:To offer a small-sized electrooptic effect switch, by providing a coplanar electrode consisting of three electrodes and a coplanar electrode consisting of two sets of two electrodes in parallel with each other on a thin film optical waveguide. CONSTITUTION:An incident light beam 4 is made incident under an electrode 62. When a voltage is applied to the coplanar electrode consisting of electrodes 61 and 62, the light beam is polarized by this coplanar electrode and is polarized by a coplanar electrode 21 to become an exit light beam 51. When a voltage is applied to the coplanar electrode consisting of electrodes 62 and 63, the deflected light beam is deflected by a coplanar electrode 22 to become an exit light beam 52. Thus, 1X2 switches are constituted in the thin film optical waveguide to make it possible to make the optical switch small-sized.

89. 发明专利

JPS57154824A METHOD OF PRODUCING MICROMOLECULAR PYROELECTRIC MATERIOAL 失效
公开(公告)号：JPS57154824A
公开(公告)日：1982-09-24
申请号：JP2596182
申请日：1982-02-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAZAKI HIRONORI , KITAYAMA TOYOKI , YAMADA TAKESHI
IPC分类号： H01G7/00 , C08J7/02

90. 发明专利

JPS57132617A ELECTROMECHANICAL CONVERSION ELEMENT 失效
公开(公告)号：JPS57132617A
公开(公告)日：1982-08-17
申请号：JP1582081
申请日：1981-02-06
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA TAKESHI , TAJIMA YOSHIMITSU
IPC分类号： H03K17/965 , H01H13/00 , H01L41/00 , H01L41/08

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