| 摘要 |
To provide a production process capable of making the transmittance of an optical glass element obtainable by press-molding a TeO<SUB>2</SUB>-containing glass high. A process for producing an optical glass element, which comprises press-molding a TeO<SUB>2</SUB>-containing glass, wherein the press-molding is carried out in an atmosphere in which the nitrogen partial pressure is at most 10<SUP>2 </SUP>Pa. The above process for producing an optical glass element, wherein the face of a mold for the press-molding to be in contact with the glass is made of carbon. The above process for producing an optical glass element, wherein the molded glass obtained by the press-molding is held in an oxygen-containing atmosphere at a temperature within a range of at least a temperature lower by 50° C. than the glass transition point of the TeO<SUB>2</SUB>-containing glass and at most the softening point of the glass.
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