Patent application number | Description | Published |
20080207427 | PHOSPHATE OPTICAL GLASS - The object of the present invention is to provide an optical glass which has optical constants such as a refractive index of from 1.45 to 1.65 and an Abbe number of at least 65 and which is yet excellent in chemical durability. | 08-28-2008 |
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 |
20090075806 | OPTICAL GLASS - The invention provides an optical glass which comprises, in terms of % by mass on the basis of oxides, 35-45% of SiO | 03-19-2009 |
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 |
20100004112 | OPTICAL GLASS - An object of the present invention is to provide an optical glass having optical constants of a refractive index of 1.70 to 1.89 and an Abbe number of 20 to 30 and being excellent in chemical durability. The invention relates to an optical glass containing P | 01-07-2010 |