Patent application number | Description | Published |
20080312062 | OPTICAL GLASS AND LENS - The invention provides an optical glass comprising, by mass % on the oxide basis; 25 to 50% of B | 12-18-2008 |
20080312063 | OPTICAL GLASS - The present invention provides an optical glass including, by mass %: 46 to 70 of B | 12-18-2008 |
20080318758 | OPTICAL GLASS - This invention provides an optical glass including, by mass %: 30 to 40% of B | 12-25-2008 |
20090093357 | OPTICAL GLASS AND LENS USING THE SAME - The invention provides: an optical glass which comprises, in terms of % by mass on the basis of oxides, 13-27% of B | 04-09-2009 |
20100240516 | OPTICAL GLASS AND PREFORMS FOR PRECISION PRESS MOLDING AND OPTICAL ELEMENTS MADE BY USING THE GLASS - An object of the invention is to provide an optical glass for precision press having optical properties of a high refractive index and a low dispersion property and having a low molding temperature, a high devitrification resistance, an excellent molding property, and a small specific gravity. The optical glass of the invention contains, in terms of % by mass on the basis of oxides, respective components of B | 09-23-2010 |
20140162863 | HIGH VISIBLE TRANSMISSION GLASSES WITH LOW SOLAR TRANSMISSION - Glasses are described which have characteristics that produce high visible transmittance, low solar transmittance, and high selectivity. The glasses can also preferably have a blue-green color. A number of advantageous formulations are described. | 06-12-2014 |
20140305502 | GLASS SUBSTRATE AND METHOD FOR PRODUCING GLASS SUBSTRATE - A method for producing a glass substrate includes (a) a step of forming molten glass having a temperature T2 less than or equal to 1500° C. on molten tin having an iron concentration greater than or equal to 100 ppm to produce a glass ribbon having a temperature T4 less than or equal to 1100° C. and a logarithm log ρ greater than or equal to 8.8, and (b) a step of cooling the glass ribbon to room temperature to produce the glass substrate. The temperature T2 represents a temperature when a logarithm of a viscosity η (dPa·s) is 2, the temperature T4 represents a temperature when the logarithm of the viscosity η (dPa·s) is 4, and the logarithm log ρ represents a logarithm of a volume resistivity ρ (Ω·cm) at 150° C. | 10-16-2014 |