Patent ID: 8479539
Filing Date: 2013-07-09
Classification: C03C,Y10S

Abstract:
1. A method of manufacturing optical elements comprising: (A) preparing a glass material for press molding by (B) press molding the glass material by reheating the glass material in a mold to soften the glass material and applying pressure to the glass material to make a glass blank; and (C) grinding and polishing the glass blank to obtain an optical element, wherein said glass melt has a composition such that, (1) when rapidly cooled to room temperature, said glass melt becomes glass that has a scattering coefficient of less than 0.005 cm wherein said glass material for press molding is comprised of glass that (i) has a scattering coefficient of greater than or equal to 0.01 cm wherein said annealing of said formed glass is conducted at a temperature lower than the glass transition temperature, and wherein the combined content of TiO