| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for processing the lens press surface of a hard metal alloy mold for forming a lens with a large diameter in a short period of time and at a low cost, for which mirror surface finishing with high precision is required. SOLUTION: An optical cutting film is formed on the base of the hard metal alloy mold, where a buffer film is laid between the base of the hard metal alloy mold and the optical cutting film to mitigate thermal expansion stress for eliminating the formation of cracks. The high-precision mold for forming a lens is speedily manufactured by precisely grinding the optical cutting film. COPYRIGHT: (C)2004,JPO
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