| 摘要 |
PROBLEM TO BE SOLVED: To mass-produce a molded product of high accuracy. SOLUTION: A temporary mold for manufacturing a standard mold is manufactured and a temporary object lens is actually molded using this temporary mold to be optically evaluated. When the optical evaluation of the temporary object lens is good, the shape evaluation and parameter setting of the standard mold are performed using an aspheric surface prescribing formula (1) due to a first measuring instrumentαand this parameter value is used to determine a standard mold programming formula (2) for the surface shape of the standard mold. Further, the shape evaluation of the standard mold and the setting of the parameter value of an evaluation formula due to a second measuring instrumentβare performed to determine a temporary mass-production mold evaluation formula (3). Then, the temporary mass-production mold is manufactured by inputting the parameter value of the formula (2) to a processor and the shape shift thereof is evaluated. When the evaluation value is within an allowable range, the temporary mass-production mold is set as a mass-production mold and this mold is used in the mass-production of the object lens. |
