| 摘要 |
PROBLEM TO BE SOLVED: To provide means for suppressing generation of bubbles in a glass optical element after press-molded.SOLUTION: A glass optical element is provided, including an oxide glass, a covering layer that covers at least a part of a surface of the oxide glass and that is a metal oxide film deficient in oxygen relative to the stoichiometric composition, and an intermediate layer disposed between the oxide glass and the covering layer. In the intermediate layer, the speed at which oxygen atoms included in the oxide glass diffuse at a temperature equal to or higher than the glass transition temperature of the oxide glass is greater than the speed at which metal atoms included in the metal oxide film diffuse at the above temperature. A glass material for press-molding and a method for producing a glass optical element using the glass material for press-molding are also disclosed.SELECTED DRAWING: None |
