| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide glass excellent in transmissivity, optical glass, a glass raw material for press molding, and an optical element.SOLUTION: There is provided glass containing at least some one kind of oxide selected from TiO, NbO, WOand BiOas a glass component, in which the total content of TiO, NbO, WOand BiOis 20 mol% or more, and the value ofβOH shown in formula (1) satisfies a relation expressed in formula (2):βOH=-[ln(B/A)]/t...(1);βOH≥0.4891×ln(1/HR)+2.48...(2).</p> |
