| 摘要 |
<p>A mold material for molding optical parts and a process for its production are disclosed, wherein at least the molding surface of the mold material comprises a sinter or a coating layer containing as the major component at least one chromium compound selected from among chromium oxide, chromium oxide carbide, chromium oxide nitride and chromium oxide carbide nitride. Molding of optical parts using this mold enables molded optical parts to be easily taken out, so that the mold has a prolonged life and provides optical parts with good surface accuracy.</p> |
