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| Number | Title | Issue Date |
| 8178454 | Optical glass and optical apparatus using the same An optical glass includes a substance A generating light of a wavelength λ2 when irradiated with light of a wavelength λ1 and a substance B generating light of a wavelength λ3 when irradiated with light of the wavelength λ1 in the case where the optical glass in... | 05/15/2012 |
| 8163665 | Optical glass An optical glass having refractive index (nd) exceeding 1.85, Abbe number (νd) of 36 or over, comprising SiO2, B2O3, La2O3, Gd2O3, Ta2O5 and Li2O as essent... | 04/24/2012 |
| 8124552 | Optical glass An optical glass includes, by weight: 1% or more and 5% or less of silicon oxide (SiO2); 15% or more and 24% or less of boron oxide (B2O3); 0.1% or more and 3% or less of aluminum oxide (Al2O3); 1% or more and 1... | 02/28/2012 |
| 8110515 | Optical glass A glass composition that simultaneously has a low temperature coefficient of refractive index and a good light transmittance, being suitable for use in environments of intense temperature change. There is provided an optical glass containing SiO2, B2... | 02/07/2012 |
| 8080491 | Optical glass An optical glass having high refractive index and low dispersion properties. There is provided an optical glass having an Abbe number (νd) and a refractive index (nd) in a region indicated by a shape bound by connecting three points, A(53, 1.7... | 12/20/2011 |
| 8039411 | Optical glass The present invention has an object to provide an optical glass which has middle refractive index and low dispersibility, a low yield point (Ts) and a liquidus temperature (L.T.) and excellent weather resistance, and is suitable for mold press molding. Th... | 10/18/2011 |
| 8012896 | Optical glass, preform for precision press molding, method for manufacturing preform for precision press molding, optical element, and method for manufacturing optical element The present invention relates to an optical glass having optical constants in the form of a refractive index nd of 1.70 or higher and an Abbé number nud of 50 or higher, a preform for precision press molding comprised of this glass, an optical element comprised of ... | 09/06/2011 |
| 8003556 | Optical glass There is provided an optical glass with a high refractive index and a low dispersion having a refractive index (nd) of not less than 1.75 and an Abbe's number (νd) of not less than 35 where the image formation characteristic is hardly affected by changes in tempera... | 08/23/2011 |
| 7947618 | Optical glass and optical element An optical glass contains, based on a total weight of the optical glass: 12 to 30 weight percent of P2O5; 1 to 5 weight percent of B2O3; 1 to 8 weight percent of Li2O; 0.5 to weight percent of Na2O; 0... | 05/24/2011 |
| 7897533 | Optical glass composition, preform and optical element An optical glass composition contains, in % by mole, 14.0% or more and 31.0% or less of SiO2, 19.0% or more and 40.0% or less of B2O3, 0% or more and 5.0% or less of Li2O, 0% or more and 12.0% or less of ZnO, 0% or more an... | 03/01/2011 |
| 7897532 | Optical glass composition, preform and optical element An optical glass composition contains, in % by weight, 1.0% or more and 12.0% or less of SiO2, 8.0% or more and 18.0% or less of B2O3, 0% or more and 6.0% or less of ZnO, 1.0% or more and 10.0% or less of ZrO2, 25.0% or mo... | 03/01/2011 |
| 7897531 | Glass Glass has optical constants of a refractive index (nd) of 1.79 or over and an Abbe number (νd) of 27 or over and a specific gravity (D) of 3.20 or over and is free from devitrification in the interior of the glass in a reheat test. The glass has chemical durability... | 03/01/2011 |
| 7884041 | Optical glass An optical glass has optical constants of a refractive index (nd) within a range from 1.73 to less than 1.80 and an Abbe number (νd) within a range from 43 to 55, comprises SiO2, B2O3, Y2O3, La2O | 02/08/2011 |
| 7846860 | Optical glass An optical glass includes, in percent by weight, 2-11% SiO2, 28-45% B2O3, 2-15% CaO, 3-18% ZnO, 1-8% ZrO2, 9-40% La2O3, 0.5-11% Gd2O3, 0-10% Y2O3, 0-3% Al | 12/07/2010 |
| 7820576 | Optical glass and optical element An optical glass for press-molding contains as glass ingredients, by weight: 0.5-4% SiO2; 20-30% B2O3; 10-20% ZnO; 1-10% ZrO2; 30-45% La2O3; 5-12% Nb2O5; 1-15% WO3; 0.... | 10/26/2010 |
| 7700507 | Optical glass, preform for precision press-molding, process for the production of the preform, optical element, and process for the production of the element An optical glass which has an Abbe's number (νd) of 50 to 59, has the property of not easily reacting with a press mold, a low-temperature softening property, excellent glass stability and high refractivity, and is suitable for precision press-molding. The optical ... | 04/20/2010 |
| 7696114 | Optical glass and optical element An optical glass contains as glass ingredients, by weight: 10-35% SiO2; 8-30% B2O3; 4-9% Li2O; 26-40% ZnO; 1-25% La2O3; and 6-22% Nb2O5. ... | 04/13/2010 |
| 7670978 | Optical glass, precision press molding preform and optical element The optical glass has a refractive index of equal to or greater than 1.65 and an Abbé number ranging from 50 to 60. In the optical glass, as molar basis, a ratio of SiO2 content to B2O3 content is greater than 0.5 and equal to or le... | 03/02/2010 |
| 7659222 | Optical glass An optical glass comprising SiO2, B2O3 and La2O3 and one or more oxides selected from the group consisting of ZrO2, Nb2O5 and Ta2O5, having a refractive ind... | 02/09/2010 |
| 7598193 | Optical glass, glass gob for press-molding, optical part, process for producing glass shaped material and process for producing optical part An optical glass having a high light transmittance, a high refractive index and excellent production stability, which contains at least one of CaO and SrO together with SiO2, B2O3, La2O3, Nb2O5 | 10/06/2009 |
| 7572747 | Optical glass An optical glass consisting essentially of B2O3 in an amount of 10-40 wt %, SiO2 in an amount less than or equal to 5 wt %, ZnO in an amount less than or equal to 15 wt %, SrO in an amount less than or equal to 9 wt %, ZrO2 | 08/11/2009 |
| 7563738 | Optical glass An optical glass has a low glass transition temperature (Tg) and optical constants in which a refractive index (nd) is in the range of from 1.70 to less than 1.74 and an Abbe number (νd) is between 40 and 45 (excluding 40 and 45), has a conten... | 07/21/2009 |
| 7501369 | Optical glass and process for the production of optical products An optical glass having high-refractivity and low-dispersion optical properties and having a low glass transition point so that a heat-treating furnace can be operated for a long period of time. The optical glass has a refractive index nd of at least 1.875, an Abbe'... | 03/10/2009 |
| 7407902 | Bismuth glass composition, and magnetic head and plasma display panel including the same as sealing member A Bismuth glass composition including 0.5 to 14 wt % of SiO2, 3 to 15 wt % of B2O3, 4 to 22 wt % of ZnO, 55 to 90 wt % of Bi2O3 and 4 wt % or less of Al2O3, and further including 5 wt % or ... | 08/05/2008 |
| 7368404 | Optical glass An optical glass having a refractive index (nd) and Abbe number (νd) within a range enclosed with a border line consisting of straight lines connecting point A (nd being 1.75 and νd being 50.0), point B (nd being 1.80 and νd being 46.0), point C (nd being 1.80 an... | 05/06/2008 |
| 7355788 | Active optical fiber for Raman amplification A Raman amplification active optical fiber comprises a core containing silica oxide (SiO2), lithium oxide (Li2O), germanium oxide (GeO2), and barium oxide (BaO). The core contains 30 to 90 molar percent of SiO2 and less th... | 04/08/2008 |
| 7351675 | Optical glass, precision press-molding preform, process for production thereof, optical element and process for the production thereof An optical glass taking account of meltability and the moldability of a preform, having optical constants including a refractive index (nd) of at least 1.57 but less than 1.67 and an Abbe's number (νd) of over 55 but not more than 65, having the property of softeni... | 04/01/2008 |
| 7341965 | Bismuth oxide glasses containing germanium oxide The invention relates to bismuth oxide glass, containing germanium oxide, a method for the production thereof, the use thereof and a glass fiber consisting of said inventive glass. ... | 03/11/2008 |
| 7341964 | Durable glass and glass enamel composition for glass coatings The present invention provides glass compositions and glass coating systems for use on glass substrates in several industrial applications. It relates to a lead-free and cadmium-free glass enamel coating made primarily by utilizing at least one or more of lead-free ... | 03/11/2008 |
| 7335614 | Optical glass An optical glass having a refractive index (nd) and an Abbe number (vd) which are within an area surrounded by the straight lines which are drawn by connecting point A (nd=1.835, vd=46.5), point B (nd=1.90, v | 02/26/2008 |
| 7332453 | Ceramics, and methods of making and using the same Ceramics (including glasses and glass-ceramics) comprising nitrogen, and methods of making the same. ... | 02/19/2008 |
| 7332864 | Plasma display panel having dielectric layer with color additives A plasma display panel is able to contrast thereof by increasing a color temperature of the plasma display panel, which comprises a dielectric layer controlling a light transmittance for visible light of a certain wavelength emitted from a phosphor in the plasma dis... | 02/19/2008 |
| 7320949 | Optical glass An optical glass suitable for precision mold pressing has a refractive index (nd) of 1.88 or over and an Abbe number (ν d) within a range from 22 to 28, comprises, in mass %, | 01/22/2008 |
| 7297647 | Lead- and arsenic-free optical lanthanum flint glasses The present invention relates to lead and arsenic free optical glasses, used for the application areas imaging, digital projection, photolithography, laser technology, wafer/chip technology as well as telecommunication, optical communications engineering, optics, il... | 11/20/2007 |
| 7291571 | Crystallizable glass and the use thereof for producing extremely solid and break resistant glass-ceramics having an easily polished surface The invention relates to crystallizable aluminosilicate magnesium-containing glass which is used for producing extremely solid and break-resistant glass-ceramics having an easily polished surface. The inventive crystallizable glass contains 5-33 mass % of SiO2 | 11/06/2007 |
| 7262144 | Photostructurable body and process for treating a glass and/or a glass-ceramic The invention relates to a photostructurable body, in particular glass or glass-ceramic, in which the glass is a multicomponent glass and/or the glass-ceramic is a multicomponent glass-ceramic, in each case having a positive change in refractive index Δn as a resul... | 08/28/2007 |
| 7253559 | Plasma display panel having dielectric layer with specific color addictive A plasma display panel is able to contrast thereof by increasing a color temperature of the plasma display panel, which comprises a dielectric layer controlling a light transmittance for visible light of a certain wavelength emitted from a phosphor in the plasma dis... | 08/07/2007 |
| 7232779 | Optical glass, precision press molding preform and method of manufacturing the same, optical element and method of manufacturing the same Provided are optical glass exhibiting a refractive index (nd) in a range of 1.75 to 1.87, an Abbé number (νd) in a range of 80 to 45, and excellent low-temperature softening properties even when not incorporating Th2O5 as well as permitting a... | 06/19/2007 |
| 7217672 | Optical glass suffering little change in refractive index by radiation of light An optical glass wherein an amount of change in refractive index (Δn: difference in refractive index between a state before radiation and a state after radiation) caused by radiation of laser beam at wavelength of 351 nm having average output power of 0.43W, pulse ... | 05/15/2007 |
| 7141522 | Ceramics comprising AlO, YO, ZrOand/or HfO, and NbOand/or TaOand methods of making the same Ceramics comprising (i) at least one of Nb2O5 or Ta2O5 and (ii) at least two of (a) Al2O3, (b) Y2O3, or (c) at least one of ZrO2 or HfO2. Embodiments of cer... | 11/28/2006 |
