With Metal Ion Penetrating Into Glass (i.e., Ion Exchange) Patents (Class 65/30.13)
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Patent number: 7858546Abstract: The present invention provides a mother glass composition for gradient-index lens, from which a lead-free Li-based gradient-index lens that is excellent in weather resistance, in particular weather resistance in the presence of water, can be manufactured. The mother glass composition includes the following components, indicated by mol %: 40?SiO2?65; 1?TiO2?10; 0.1?MgO?22; 0.15?ZnO?15; 2?Li2O?18; 2?Na2O?20; 0?B2O3?20; 0?Al2O3?10; 0?K2O?3; 0?Cs2?O?3; 0?Y2O3?5; 0?ZrO2?2; 0?Nb2O5?5; 0?In2O3?5; 0?La2O3?5; and 0?Ta2O5?5. The mother glass composition further includes at least two oxides selected from CaO, SrO, and BaO each in a range of 0.1 mol % to 15 mol %. The total of MgO+ZnO is greater than or equal to 2 mol %. The molar ratio of ZnO/(MgO+ZnO) is in a range of 0.07 to 0.93. The total of Li2O+Na2O is in a range of 6 mol % to 38 mol %. The total of Y2O3+ZrO2+Nb2O5+In2O3+La2O3+Ta2O5 is in a range of 0 mol % to 11 mol %.Type: GrantFiled: February 15, 2008Date of Patent: December 28, 2010Assignee: Nippon Sheet Glass Company, LimitedInventors: Taro Miyauchi, Tatsufumi Shiba
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Patent number: 7841210Abstract: In a method of manufacturing a glass substrate for an information recording medium including a step for chemically strengthening the glass substrate by contacting the glass substrate with chemical strengthening processing liquid containing chemical strengthening salt, concentration of Fe and Cr is 500 ppb or less in said chemical strengthening salt, respectively. The concentration may be detected by the use of an ICP (Inductively Coupled Plasma) emission spectrometry analyzing method or a fluorescent X-ray spectroscopy analyzing method.Type: GrantFiled: October 5, 2007Date of Patent: November 30, 2010Assignee: Hoya CorporationInventors: Hiroaki Ikeda, Masaru Suzuki, Kazuna Sasaki, Yumi Mukai, Jun Ozawa
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Publication number: 20100284074Abstract: A polarizing glass includes shape-anisotropic metal particles oriented and dispersed in a glass substrate, the concentration of the metal particles having a distribution in which in the travel direction of light in which a polarizing function is exhibited, the concentration is substantially zero near one of the surfaces of the glass substrate and near the other surface, gradually increases from one of the surfaces of the glass substrate to the other surface, becomes a value within a predetermined range in the glass substrate, and then gradually decreases toward the other surface.Type: ApplicationFiled: March 26, 2009Publication date: November 11, 2010Applicant: Hoya Candeo Optronics CorporationInventors: Yoshitaka Yoneda, Michiyori Miura, Seiichi Yokoyama
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Publication number: 20100263409Abstract: Process for a fast ion-exchange between an alkaline metal ion in glass and another ion in gas atmosphere, in which process the glass surface is heated with a flame and the ion exchange takes part at the portion heated by the flame essentially simultaneously with heating. The process is fast enough to be integrated to a glass manufacturing or processing line.Type: ApplicationFiled: December 8, 2008Publication date: October 21, 2010Applicant: BENEQ OYInventors: Markku Rajala, Mika Immonen, Jukka Santahuhta, Timo Akerlund
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Publication number: 20100260949Abstract: Known synthetic quartz glass tubes for the production of a preform have an inner bore with a surface layer produced without using tools in the molten state and an inner zone. The aim of the invention is to provide a tube which does not release any OH groups to the surroundings. For this purpose, the surface layer (30) has a thickness of 10 ?m and an average OH content of not more than 5 ppm by weight and an average surface roughness Ra of not more than 0.1 ?m. The inner zone (34) that starts on the surface layer (30) and terminates 10 ?m before the outer wall has an average OH content of not more than 0.2 ppm by weight. A simple and inexpensive method for producing a quartz tube of the above type is to continuously draw a tube strand from a softened quartz glass mass in a vertical drawing process. A scavenging gas is circulated through the inner bore of the tube, said gas having a water content of less than 100 ppb per weight.Type: ApplicationFiled: June 21, 2010Publication date: October 14, 2010Applicant: HERAEUS QUARZGLAS GMBH & CO. KGInventors: Oliver Ganz, Ralph Sattmann, Jan Vydra
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Patent number: 7767607Abstract: A glass substrate of the present invention for magnetic recording media having high heat resistance and easy chemical strengthening ability at once has not been obtained, which is a glass composition essentially comprising 60 to 70 wt % SiO2, 5 to 20 wt % Al2O3, 0 to 1 wt % Li2O, 3 to 18 wt % Na2O, 0 to 9 wt % K2O, 0 to 10 wt % MgO, 1 to 15 wt % CaO, 0 to 4.5 wt % SrO, 0 to 1 wt % BaO, 0 to 1 wt % TiO2 and 0 to 1 wt % ZrO2, wherein the sum of Li2O, Na2O and K2O is from 5 to 25 wt %, and the sum of MgO, CaO, SrO and BaO is from 5 to 20 wt %.Type: GrantFiled: November 1, 2007Date of Patent: August 3, 2010Assignees: Nippon Sheet Glass Co., Ltd., Hoya CorporationInventors: Junji Kurachi, Akihiro Koyama, Nobuyuki Yamamoto
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Publication number: 20100179044Abstract: The present invention relates to a glass substrate comprising at least one ion pattern obtained by a treatment for exchanging the alkali metal ions of the glass with silver ions originating from an outside source, said substrate being formed from a glass having a specific composition and said ion pattern having a variation in the refractive index greater than or equal to 0.03, a depth greater than or equal to 100 ?m and a light transmission coefficient at 410 nm (TL410) greater than or equal to 60%.Type: ApplicationFiled: September 3, 2008Publication date: July 15, 2010Applicant: SAINT- GOBAIN GLASS FRANCEInventors: Julien Sellier, Jerome Lalande, Rene Gy, Didier Le Couviour
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Publication number: 20100167904Abstract: Provided is a method for manufacturing polarized glass, comprising forming a glass preform by melting glass that includes metal ions and halogen ions and then depositing metal halide particles in the glass in which the metal ions and the halogen ions are dispersed; forming a glass sheet containing extended metal halide particles that are obtained by extending the metal halide particles by performing thermal drawing on the glass preform at a prescribed temperature; annealing by heating the glass sheet to a temperature that is no greater than a transformation temperature of the glass and no less than a distortion temperature of the glass; and reducing the extended metal halide particles in the glass sheet that has undergone said annealing into extended metal particles. The glass preform formed in said forming a glass preform has a haze between 0.3% and 1.3% with respect to light in a wavelength region passed by a G filter.Type: ApplicationFiled: June 25, 2009Publication date: July 1, 2010Applicant: POLATECHNO CO., LTD.Inventors: Masahiro ICHIMURA, Shozo MORIMOTO, Yohsuke KANAYA
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Publication number: 20100159227Abstract: The present invention is to provide a synthetic quartz glass body having a high light transmittance. The present invention provides a synthetic quartz glass body having pores in a surface part thereof.Type: ApplicationFiled: December 22, 2009Publication date: June 24, 2010Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Chikaya TAMITSUJI, Kunio Watanabe, Kaname Okada, Daisuke Kobayashi
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Publication number: 20100134705Abstract: A glass polarizer having an excellent transmittance and extinction ratio with respect to light in the visible light range including blue using silver halide containing glass as a starting material is provided. A manufacturing method according to the present invention to manufacture glass polarizers is characterized in that borosilicate glass in which silver halide particles are dispersed and deposited by heat treatment is reduced to generate metallic silver particles from at least a portion of silver halide and then, heated for stretching to generate silver halide particles oriented and stretched in the glass.Type: ApplicationFiled: March 4, 2008Publication date: June 3, 2010Inventors: Khaled Jabri, Nobuhito Takeshima, Atsushi Arai, Hiromichi Nishimura, Toshiharu Yamashita, Yoshihiko Noro
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Publication number: 20100107693Abstract: The invention relates to a method for doping and/or colouring glass. In the method a two- or three-dimensional layer is formed on the surface of the glass, and the layer is further allowed to diffuse and/or dissolve into the glass to change the transmission, absorption, reflection and/or scattering of the electromagnetic radiation of the glass. The layer of nanomaterial includes at least one component that causes the above-mentioned change and at least one component that lowers the melting point of the above-mentioned component causing the change.Type: ApplicationFiled: February 12, 2007Publication date: May 6, 2010Applicant: BENEQ OYInventors: Markku Rajala, Joe Pimenoff, Jussi Wright
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Publication number: 20100089096Abstract: To provide a novel fluorination treatment method whereby the surface of oxide glass can be treated for fluorination at low cost and with excellent adhesiveness. A method for treating the surface of oxide glass, which comprises contacting the surface of oxide glass with a gas of a fluorinating agent or a mixed gas having a fluorinating agent diluted with an inert gas, wherein the fluorinating agent is an elemental fluorine, or a fluorine compound capable of cleaving a bond between an oxygen atom and a metal atom in the framework of the oxide glass and forming a bond between a fluorine atom and the metal atom; and the concentration of hydrogen fluoride at the surface of oxide glass with which the fluorinating agent is in contact, is controlled to be at most 1 mol %.Type: ApplicationFiled: December 17, 2009Publication date: April 15, 2010Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Chikaya TAMITSUJI, Kunio Watanabe
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Patent number: 7694530Abstract: Chemical strengthening treatment is performed by first providing a granular chemical strengthening salt so as to prevent spread in atmosphere at the time of introduction of chemical strengthening salt in a treating vessel, introducing the chemical strengthening salt in a treating vessel, melting the chemical strengthening salt into molten chemical strengthening salt and bringing a glass disc into contact with the molten chemical strengthening salt. The granular chemical strengthening salt is, for example, one obtained by forming of a powdery chemical strengthening salt material into grains. A chemically strengthened glass substrate for magnetic disk can be obtained through the process of carrying out chemical strengthening treatment of magnetic disk glass substrates. A magnetic disk can be obtained by forming at least a magnetic layer on the chemically strengthened glass substrate for magnetic disk.Type: GrantFiled: September 28, 2004Date of Patent: April 13, 2010Assignee: Hoya CorporationInventors: Naohiro Kamiya, Hideki Isono
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Patent number: 7624594Abstract: The present invention is a magnetic recording medium substrate made of amorphous glass of B2O3—Al2O3—SiO2—Li2O type, wherein a chamfer is formed between an edge face at an outer circumference side or an inner circumference side of the substrate and a principal plane of the substrate, and a content of sodium and potassium at a surface area of the inner or outer circumference side edge face and a surface area of the chamfer is greater than a mean content of sodium and potassium of the magnetic recording medium substrate. With the present invention, it is possible to prevent generation of projections on a magnetic film, a protective film or the like due to movement of lithium ions in a magnetic recording medium substrate made of amorphous glass which includes lithium.Type: GrantFiled: June 20, 2005Date of Patent: December 1, 2009Assignee: Showa Denko K.K.Inventors: Yukihisa Matsumura, Katsuaki Aida
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Publication number: 20090252993Abstract: Provided are a glass substrate for an information recording medium, which has both high strength and high flatness and can be manufactured at low cost, a method for manufacturing such glass substrate and an information recording medium using such glass substrate. The glass substrate for the information recording medium satisfies inequalities of 0.1?(W1?W3)/W2?5, where, W1 is an ion concentration at the center portion in the thickness direction of the glass substrate in a chemically reinforced region at the outer circumference end surface and the inner circumference end surface of the glass substrate and is the maximum value of K+ ion concentration, W2 is a Na+ ion concentration at a position where the K+ ion concentration is maximum, and W3 is a K+ ion concentration in a glass substrate region not chemically reinforced.Type: ApplicationFiled: November 5, 2007Publication date: October 8, 2009Inventors: Hideki Kawai, Kenichi Sasaki, Hiroaki Sawada
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Patent number: 7576021Abstract: A mother glass composition for graded index lenses, comprising the following glass components in mol %: 40?SiO2?65, 1?TiO2?10, 0?MgO?22, 2?Li2O?18, 2?Na2O ?20, 6?Li2O+Na2O?38, and from 0.1 to 15 mol % of any two or more of CaO, SrO and BaO, a graded index lens using the mother glass composition, a manufacturing method of the graded index lens, and an optical product and an optical instrument using the graded index lens, are provided.Type: GrantFiled: April 5, 2005Date of Patent: August 18, 2009Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Taro Miyauchi, Kazuya Ohkawa, Tatsufumi Shiba, Tomizou Matsuyama
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Patent number: 7573645Abstract: The present invention provides a method of producing a graded refractive index optical element, the method being capable of easily forming a graded refractive index distribution in a desired portion of a glass substrate without the need for a specific treatment atmosphere, and without using a molten salt. More specifically, the present invention provides a method of producing a graded refractive index optical element comprising applying a paste containing a copper compound, an organic resin and an organic solvent to a glass substrate containing an alkali metal component as a glass component, and then performing heat treatment at a temperature below the softening temperature of the glass substrate.Type: GrantFiled: February 15, 2005Date of Patent: August 11, 2009Assignees: Isuzu Glass Co., Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Tatsuya Suetsugu, Norimasa Kominami, Takeshi Ohtani, Naoko Kaga, Hiroaki Yokoi, Minoru Takada, Takashi Tarumi, Toshihiko Einishi, Kohei Kadono
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Patent number: 7522803Abstract: The present invention provides a method of producing an optical element without the need for high vacuum, unlike the thin film deposition methods, and without using a molten salt. More specifically, the invention provides a method of producing an optical element comprising applying a paste containing at least one compound selected from lithium compounds, potassium compounds, rubidium compounds, cesium compounds, silver compounds, and thallium compounds, an organic resin, and an organic solvent to a glass substrate containing an alkali metal component as a glass component and then performing heat treatment at a temperature below the softening temperature of the glass substrate.Type: GrantFiled: February 15, 2005Date of Patent: April 21, 2009Assignees: Isuzu Glass Co., Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Tatsuya Suetsugu, Norimasa Kominami, Takeshi Ohtani, Naoko Kaga, Hiroaki Yokoi, Minoru Takada, Takashi Tarumi, Toshihiko Einishi, Kohei Kadono
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Patent number: 7485593Abstract: To provide titania-silica glass which is transparent glass of low thermal expansion, in particular, is of a low thermal expansion coefficient over a wide range of temperatures of 0 to 100° C. (an operating temperature range) when it is used as a photomask or a mirror material in extreme ultraviolet ray lithography, and which is excellent in homogeneity within the field and stability. Titania-silica glass is used which has 8 to 10% by weight of titania and 90 to 92% by weight of silica, where a Ti3+ concentration is 10 to 60 ppm by weight.Type: GrantFiled: October 18, 2007Date of Patent: February 3, 2009Assignee: Covalent Materials CorporationInventors: Masanobu Ezaki, Masashi Kobata, Sachiko Kato
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Publication number: 20090025426Abstract: This invention relates to grey glass that is capable of achieving high light transmittance in the visible range in combination with good solar properties (e.g., reduced IR, UV and/or TS transmission), and/or a method of making the same. In certain example embodiments, the glass is treated with UV (ultraviolet) radiation in order to increase % FeO and/or CeO2 content, thereby increasing the glass redox and improving solar performance of the glass. Such glass compositions are useful, for example and without limitation, in automotive windows (e.g., windshields, sidelites, backlites and sunroofs) and/or in architectural/residential window applications.Type: ApplicationFiled: July 23, 2007Publication date: January 29, 2009Applicant: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid M. Landa, Scott V. Thomsen, Richard Hulme
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Patent number: 7482296Abstract: The invention is directed to an aluminoborosilicate glass containing alkali metals for the production of optical components with refractive index gradients which are generated by ion exchange of monovalent metal ions in a base glass comprising at least silicon oxide, boron oxide, aluminum oxide and an alkali metal oxide, particularly for the production of gradient index lenses (GRIN lenses).Type: GrantFiled: December 17, 2004Date of Patent: January 27, 2009Assignee: Grintech GmbHInventors: Bernhard Messerschmidt, Christian Ruessel, Sandra Hornschuh, Torsten Possner, Ulf Possner
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Publication number: 20080303193Abstract: The present invention provides a mold which is processed by ion beam irradiation or electron beam irradiation and in which a throughput of the mold is high and a decrease in the throughput or electrostatic discharge due to charging does not occur, a method of producing the mold, and a method of producing a molded article produced using the mold. In a mold for molding a plastic resin or the like, at least one of a cavity and a core on the micrometer order to the nanometer order is provided on the surface of a conductive glass substrate. A method of producing a mold for molding a plastic resin or the like includes forming at least one of a cavity and a core on the micrometer order to the nanometer order by irradiating an ion beam on the surface of a conductive vanadate glass substrate that contains vanadium pentoxide (V2O5) as a main component and that has an electric conductivity in the range of 1.0×10?1 to 1.0×10?8 S/cm.Type: ApplicationFiled: September 5, 2005Publication date: December 11, 2008Applicant: KITAKYUSHU FOUNDATION FOR THE ADVANCEMENT OF INDUSTRY, SCIENCE AND TECHNOLOGYInventors: Tetsuaki Nishida, Ken-ich Kobayashi, Akira Morishige
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Publication number: 20080204889Abstract: The present invention provides a method of producing a graded refractive index optical element, the method being capable of easily forming a graded refractive index distribution in a desired portion of a glass substrate without the need for a specific treatment atmosphere, and without using a molten salt. More specifically, the present invention provides a method of producing a graded refractive index optical element comprising applying a paste containing a copper compound, an organic resin and an organic solvent to a glass substrate containing an alkali metal component as a glass component, and then performing heat treatment at a temperature below the softening temperature of the glass substrate.Type: ApplicationFiled: February 15, 2005Publication date: August 28, 2008Applicants: Isuzu Glass Co., Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Tatsuya Suetsugu, Norimasa Kominami, Takeshi Ohtani, Naoko Kaga, Hiroaki Yokoi, Minoru Takada, Takeshi Tarumi, Toshihiko Einishi, Kohei Kadono
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Publication number: 20080022721Abstract: This invention relates to a method of making glass. In certain example embodiments, a major surface(s) of the glass is treated with aluminum chloride (e.g., AlCl3) at or just prior to the annealing lehr. The aluminum chloride treatment at or just prior to the annealing lehr, in either a float or patterned line glass making process, is advantageous in that it allows the treatment to be performed at a desirable glass temperature and permits exhaust functions in or proximate the annealing lehr to remove byproducts of the treatment in an efficient manner.Type: ApplicationFiled: July 25, 2006Publication date: January 31, 2008Inventors: Bernd Disteldorf, Anthony V. Longobardo, Keith McCrystal
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Patent number: 7281394Abstract: In a method of manufacturing a glass substrate for an information recording medium including a step for chemically strengthening the glass substrate by contacting the glass substrate with chemical strengthening processing liquid containing chemical strengthening salt, concentration of Fe and Cr is 500 ppb or less in said chemical strengthening salt, respectively. The concentration may be detected by the use of an ICP (Inductively Coupled Plasma) emission spectrometry analyzing method or a fluorescent X-ray spectroscopy analyzing method.Type: GrantFiled: January 8, 2003Date of Patent: October 16, 2007Assignee: Hoya CorporationInventors: Hiroaki Ikeda, Masaru Suzuki, Kazuna Sasaki, Yumi Mukai, Jun Ozawa
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Patent number: 7168268Abstract: A method for the manufacture of colored structures of a glass, particularly for applying an inscription to the glass, by locally heating volume elements of the glass by means of a laser beam. The glass contains ions of metals which, in the form of submicroscopic particles, color the glass wherein the local heating of the non-doped glass is accomplished through a solution or gel of a metallic salt which transmits the laser beam well and is directly contacted with a surface of the glass.Type: GrantFiled: April 17, 2002Date of Patent: January 30, 2007Assignee: Sator Laser GmbHInventor: Walter Czarnetzki
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Patent number: 7104090Abstract: Polarizing glass articles and methods of manufacturing polarizing glass articles are disclosed. The method involves forming a polarizing layer on the surface of the glass article by ion-exchanging silver or copper into the surface.Type: GrantFiled: January 24, 2002Date of Patent: September 12, 2006Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, Donald M. Trotter, Jr.
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Patent number: 7095935Abstract: The present invention provides a method for forming an optical waveguide characterized by applying a paste containing a copper compound to a glass substrate containing an alkali metal as a glass component over the whole surface thereof or in a patterned form, and performing heat treatment at a temperature lower than the softening temperature of the glass substrate. The method of the invention can produce an optical waveguide without the need for a high vacuum as in the thin film deposition method and without the use of a molten salt, and is capable of dispersing Cu+ ions selectively in a glass substrate with excellent controllability.Type: GrantFiled: December 9, 2002Date of Patent: August 22, 2006Assignees: Isuzu Glass Co., Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Tatsuya Suetsugu, Kohei Kadono, Norimasa Kominami, Takeshi Ohtani, Hiroaki Yokoi, Minoru Takada, Takashi Tarumi, Toshihiko Einishi, Tetsuo Yazawa
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Patent number: 6898365Abstract: A method for manufacturing an article capable of constraining a propagating wave is disclosed. The method includes contacting a crystalline substrate with a source of deuterium ions to create a region in the crystalline substrate having a crystal structure that includes deuterium ions. The region is capable of constraining a propagating wave to the region.Type: GrantFiled: September 30, 2002Date of Patent: May 24, 2005Assignee: California Institute of TechnologyInventor: Lee J. Burrows
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Patent number: 6856746Abstract: A method for fabricating titanium-indiffusion waveguides in optical modulators and other optical waveguide devices includes disposing titanium, strips in a waveguide pattern on the surface of a crystalline substrate, such as lithium niobate or lithium tantalate, and indiffusing the titanium atoms into the crystalline substrate by creating a flowing, wet deuterium oxide (D2O) environment, raising the temperature in the D2O environment to a temperature within the range of 900 degrees Celsius and 1100 degrees Celsius and maintaining the temperature for a period of time that will allow for the necessary indiffusion of titanium to occur within the crystal substrate.Type: GrantFiled: March 28, 2003Date of Patent: February 15, 2005Assignee: California Institute of TechnologyInventors: Lee J. Burrows, William B. Bridges
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Patent number: 6845634Abstract: A fabrication method for a thallium-doped GRIN lens composed of a simplified glass composition is described. The composition is composed of silicon, oxygen, boron, zinc, potassium, sodium, and thallium. The method is comprised of preparing a cylindrical preform, annealing the cylindrical preform, removing contaminants from preform thereafter extruded to form a glass rod, exposing the glass rod to an alkali salt bath, and chemically milling the glass rod within an acid bath. Method and composition produce colorless lenses with a refractive index from 1.5900 to 1.7810, an insertion loss no greater than 0.05 dB, and a chromatic transmittance greater than 90 percent.Type: GrantFiled: June 20, 2002Date of Patent: January 25, 2005Assignee: Wave Crossing CorporationInventors: Hong Tan, Youmin Liu, Yushan Tan
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Patent number: 6844669Abstract: A glass funnel for a cathode ray tube, which has a substantially rectangular opened end at one end and a neck portion at the other end and which constitutes, together with a glass panel having a substantially rectangular face portion, a glass bulb to be used for a cathode ray tube, wherein the glass constituting the glass funnel contains, by molar percentage, at least 60% of SiO2 and at least 7% of PbO; when the molar percentages of Na2O and K2O contained in said glass are represented by WNa and WK, respectively, 0.35?WK/(WNa+WK)?0.6; a compressive stress layer is formed by chemical tempering at least in the outer surface of a region containing a position where the tensile stress formed when the interior of the glass bulb is vacuumed to produce the cathode ray tube, becomes maximum; and either one or both of the outer surface of the chemically tempered region and the inner surface opposite to said outer surface, are colored by ion exchange coloration.Type: GrantFiled: June 24, 2003Date of Patent: January 18, 2005Assignee: Asahi Glass Company, LimitedInventors: Tsunehiko Sugawara, Mikio Ueki
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Patent number: 6810688Abstract: The subject of the invention is a process for treating a glass sheet which consists of a glass composition having a strain point above 540° C. and is intended for producing a display screen, the said process including at least one ion-exchange treatment on at least part of the surface of the glass sheet and a precontraction treatment.Type: GrantFiled: April 24, 2002Date of Patent: November 2, 2004Assignee: Saint-Gobain Glass FranceInventors: Géraldine Duisit, Olivier Gaume, René Gy
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Publication number: 20040168471Abstract: A method for the manufacture of colored structures of a glass, particularly for applying an inscription to the glass, by locally heating volume elements of the glass by means of a laser beam, which glass contains ions of metals which, in the form of submicroscopic particles, color the glass wherein the local heating of the non-doped glass is accomplished through a solution or gel of a metallic salt which transmits the laser beam well and is directly contacted with a surface of the glass.Type: ApplicationFiled: April 26, 2004Publication date: September 2, 2004Inventor: Walter Czarnetzki
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Patent number: 6772608Abstract: The invention relates to a method for producing UV polarizers, according to which spheroid particles situated near the surface of the glass are incorporated into the support material (primarily standard float glass) in a novel arrangement. According to the method for producing UV polarizers, after the introduction of metal ions (e.g., silver ions) into the glass surface, a large size distribution of particles is achieved by multiple alternation of a heat treatment for separating out spherical metal particles, followed by the renewed introduction of metal ions and a subsequent heat treatment. A deformation of the glass produces spheroid particles of various sizes and different semi-axis relationships. The particles are characterized by their large size distribution and are deformed differently in relation to their spheroid shape. In this way UV polarizers are produced which have a wide absorption range since the absorption bands having different maximum positions overlap.Type: GrantFiled: January 3, 2001Date of Patent: August 10, 2004Assignee: F.O.B. GmbH Gesellschaft Zur Fertigung Farbiger Optoelektronischer BauelementeInventors: Wolf-Gernot Drost, Andreas Berger
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Publication number: 20040118157Abstract: The invention relates to a method for the laser-assisted introduction of metal ions by ion exchange and diffusion and for the colored internal scribing of glass.Type: ApplicationFiled: December 18, 2003Publication date: June 24, 2004Inventors: Reinhard Borek, Thomas Rainer, Klaus-Jurgen Berg
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Publication number: 20030205057Abstract: Methods and apparatus for adding metals such as aluminum to fused silica glass articles are disclosed. The methods and apparatus allow for controlled, low level addition of metals into fused silica glass articles. The fused silica glass articles containing added aluminum exhibit improved internal transmission and decreased absorption change when irradiated with a laser.Type: ApplicationFiled: December 21, 2001Publication date: November 6, 2003Inventors: William P. Peters, Merrill F. Sproul, Daniel R. Sempolinski, Michael H. Wasilewski
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Publication number: 20030196455Abstract: A photonic fabrication apparatus for making a waveguide in a glass substrate having a metal mask defining a region for the waveguide. The apparatus includes a molten salt, and a sacrificial anodic reaction material, in contact with the salt, that reacts with one or more contaminants in the salt. Also described is a salt-melt ion-exchange system having a chemical secondary reaction in the salt melt to prevent or reduce any primary reaction at or near the waveguide that would otherwise roughen sides of the waveguide and/or the surface over the waveguide.Type: ApplicationFiled: April 17, 2002Publication date: October 23, 2003Inventors: Michael A. McCov, James W. Zimmermann
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Patent number: 6625368Abstract: A method for fabricating titanium-indiffusion waveguides in optical modulators and other optical waveguide devices includes disposing titanium strips in a waveguide pattern on the surface of a crystalline substrate, such as lithium niobate or lithium tantalate, and indiffusing the titanium atoms into the crystalline substrate by creating a flowing, wet deuterium oxide (D2O) environment, raising the temperature in the D2O environment to a temperature within the range of 900 degrees Celsius and 1100 degrees Celsius and maintaining the temperature for a period of time that will allow for the necessary indiffusion of titanium to occur within the crystal substrate.Type: GrantFiled: October 15, 1999Date of Patent: September 23, 2003Assignee: California Institute of TechnologyInventors: Lee J. Burrows, William B. Bridges
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Publication number: 20030172676Abstract: A process for colouring the glass materials to obtain decorated articles of glass-ceramics by the diffusion colouring technique, comprising the steps of: heat treatment of a precursor material or an article made of a transparent glass in vapours of a colourant selected from the group consisting of CuCl, CoCl2, NiCl2, MnCl2, or their mixture, in the following controlled temperature-temporal mode: continuous or step-by-step, with isothermal holdings, heating to T=800-900° C. at rate of 300-500°C./h, and after the final isothermal holding—heating to 950-1150° C. at rate of 300-900° C./h, holding and cooling.Type: ApplicationFiled: December 6, 2002Publication date: September 18, 2003Inventor: Sergei K. Evstropiev
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Patent number: 6619073Abstract: The invention relates to optical glass having improved initial transmittance, formed by subjecting the glass to a hydrogen and/or deuterium treatment at a temperature, and for a duration of time sufficient to diffuse the hydrogen and/or deuterium into the glass.Type: GrantFiled: October 23, 2001Date of Patent: September 16, 2003Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, Daniel R. Sempolinski, Thomas P. Seward, Charlene M. Smith
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Patent number: 6598429Abstract: A method for fabricating gradient-index rods and rod arrays. A central rod of optical glass having predetermined properties and predetermined outside dimensions is placed inside a tube of optical glass having predetermined properties and predetermined outside dimensions, to form an assembly. The inside dimensions of the tube are substantially equal to the outside dimensions of the rod. The tube is formed of a plurality of coaxial sleeves, the outside dimensions of each interior sleeve being substantially equal to the inside dimensions of the next adjacent sleeve, each sleeve having a selected refractive index so that, together with the tube, the refractive indices from the central rod through the outermost sleeve approximate the refractive index profile of the gradient-index rod to be fabricated. The central rod and sleeve material is selected so that their respective thermal indices of expansion are substantially equal.Type: GrantFiled: November 17, 2000Date of Patent: July 29, 2003Assignee: BeamTek, Inc.Inventors: Shibin Jiang, Philip Lam
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Patent number: 6595028Abstract: In a method of manufacturing a chemical reinforced glass substrate, consideration is previously made about a relationship between conditions of chemical reinforcement for a glass substrate and deformation caused by the chemical reinforcement at an edge portion of the glass substrate. The glass substrate is chemically reinforced on the basis of the relationship so that an edge profile is shaped into a desirable edge profile during the chemical reinforcement. The resultant chemical reinforced glass substrate is flat and smooth in a wide area and effective to improve a recording density and to avoid head crashes.Type: GrantFiled: October 2, 2000Date of Patent: July 22, 2003Assignee: Hoya CorporationInventors: Takemi Miyamoto, Hideki Isono
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Patent number: 6595029Abstract: The invention relates to a process for the production of internally-hardened glass tubes, in which in a tube-drawing process for the production of glass tubes that is known in the art, a coated drawing tool, for example in the process according to Danner a coated mandrel or in the process according to Vello or in A-drawing process a coated needle, is used, whose coating releases coating material upon contact with the inside surface of the tube that is produced and accumulates on the inside glass surface. The chemical resistance is increased by this internal hardening. The invention also relates to devices for implementing this process and uses of the tubes that are produced according to these processes.Type: GrantFiled: September 15, 2000Date of Patent: July 22, 2003Assignee: Schott Spezialglas GmbHInventors: Erhard Dick, Erich Fischer, Roland Fuchs
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Publication number: 20030097858Abstract: A material for use in optical amplifiers is described. The material includes an oxide glass substrate material, a rare earth dopant and a silver dopant. The silver dopant enhances photoluminescence of the rare earth dopants in the oxide glass. The silver can be introduced into the glass using an ion exchange process or by ion implantation. Oxide glass doped with erbium ions and silver ions provides a broad excitation band for photoluminescence of Er3+ in the visible and near ultraviolet. An amplifier material according to the present invention can be formed by ion implanting a rare earth ion, for example erbium, and doping with silver by an ion exchange method. Alternatively, the silver can be implanted into the material as well. The resulting silver dopant may be dispersed throughout the oxide glass primarily as ions as a result of the fabrication method.Type: ApplicationFiled: November 26, 2001Publication date: May 29, 2003Inventors: Christof Strohhofer, Albert Polman
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Patent number: 6523367Abstract: In a method of manufacturing a glass substrate for an information recording medium including a step for chemically strengthening the glass substrate by contacting the glass substrate with chemical strengthening processing liquid containing chemical strengthening salt, concentration of Fe and Cr is 500 ppb or less in said chemical strengthening salt, respectively. The concentration may be detected by the use of an ICP (Inductively Coupled Plasma) emission spectrometry analyzing method or a fluorescent X-ray spectroscopy analyzing method.Type: GrantFiled: March 31, 2000Date of Patent: February 25, 2003Assignee: Hoya CorporationInventors: Hiroaki Ikeda, Masaru Suzuki, Kazuna Sasaki, Yumi Mukai, Jun Ozawa
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Patent number: 6516634Abstract: Embodiments include a method for forming a glass which displays visible cracking prior to failure when subjected to predetermined stress level that is greater than a predetermined minimum stress level and less than a failure stress level. The method includes determining a critical flaw size in the glass and introducing a residual stress profile to the glass so that a plurality of visible cracks are formed prior to failure when the glass is subjected to a stress that is greater than the minimum stress level and lower than the critical stress. One method for forming the residual stress profile includes performing a first ion exchange so that a first plurality of ions of a first element in the glass are exchanged with a second plurality of ions of a second element that have a larger volume than the first ions. A second ion exchange is also performed so that a plurality of the second ions in the glass are exchanged back to ions of the first element.Type: GrantFiled: February 11, 2000Date of Patent: February 11, 2003Assignee: The Penn State Research FoundationInventors: David J. Green, Vincenzo M. Sglavo, Rajan Tandon
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Patent number: 6511932Abstract: A graded index lens is obtained by treating a raw glass material having a rod shape by ion exchange using silver to form a refractive index distribution in the radial direction of the rod, wherein the raw glass material comprises a glass composition of the following components: 15<Na2O≦30 mol %; 10<Al2O3≦25 mol %; 27.5≦SiO2≦55 mol %; 3≦B2O3≦18 mol %; 2.5≦MgO≦18 mol %; 0≦Ta2O5≦5 mol %; 0≦La2O3≦3 mol %; 0≦BaO≦3 mol %; and 0≦ZrO2≦3 mol %.Type: GrantFiled: December 1, 2000Date of Patent: January 28, 2003Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Jun Yamaguchi, Shigeo Kittaka
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Publication number: 20030000251Abstract: A fabrication method for a thallium-doped GRIN lens composed of a simplified glass composition is described and claimed. The composition is composed of silicon, oxygen, boron, zinc, potassium, sodium, and thallium. The method is comprised of preparing a cylindrical preform, annealing said cylindrical preform, removing contaminants from preform thereafter extruded to form a glass rod, exposing the glass rod to an alkali salt bath, and chemically milling the glass rod within an acid bath. Method and composition produce colorless lenses with a refractive index from 1.5900 to 1.7810, an insertion loss no greater than 0.05 dB, and a chromatic transmittance greater than 90 percent.Type: ApplicationFiled: June 20, 2002Publication date: January 2, 2003Inventors: Hong Tan, Youmin Liu, Yushan Tan
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Patent number: 6470712Abstract: A laser processing method for removing glass by melting, evaporation or ablation from sheet-like glass substrate for forming microscopic concavities and convexities. Diffraction grating and planar microlens array obtained thereby.Type: GrantFiled: February 20, 2001Date of Patent: October 29, 2002Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Tadashi Koyama, Keiji Tsunetomo, Masahiro Oikawa, Kenjiro Hamanaka