摘要 |
PROBLEM TO BE SOLVED: To provide a mold for an optical element capable of inexpensively producing a matrix within a short time. SOLUTION: A liquid plastic raw material is injected into the cavity formed by two matrices (projected matrix 11, recessed matrix 12) and the molding gasket 1 held between them and cured to mold an optical element. The projected matrix 11, the recessed matrix 12 and the molding gasket 1 are grasped by a press spring 4. As the molding gasket 1 and the press spring 4, ones used heretofore are used as they are but the projected matrix 11 and the recessed matrix 12 are different from conventional ones and produced by the injection molding of a synthetic resin. |