| 摘要 |
PROBLEM TO BE SOLVED: To obtain a plastic lens for glasses with striae and bubbles reduced. SOLUTION: When a plastic lens raw material is injected into a molding space and polymerized/molded by using a plastic lens molding mold 1 having an upper mold 2 for molding the concave surface of the lens, a lower mold 3, and a side member 5, when an angle which meets the relationship of sinθ=d/(2R) isθ°(wherein d is the diameter of the upper mold; and R is a radius of curvature when the molding surface of the upper mold is made to approximate a spherical surface), the mold 1 is slanted by an angle which is at leastθ°and smaller thanθ°+15°to a horizontal surface. COPYRIGHT: (C)2005,JPO&NCIPI |
