| 摘要 |
PURPOSE:To obtain the titled set of molds by which a plurality of lenses can be molded at the same time by a method wherein the working surface of a top force makes a single sphere, a plurality of spheres are formed on the working surface of a bottom force and circular holes are provided on a gasket to connect each other through passages. CONSTITUTION:A plurality of concave spheres 6 are provided on the working surface of the bottom force 5 and each central axis of spheres 6 is crassed at one point 0. The gasket 7 is provided with circular holes 8 having a diameter necessary to the lens at the positions corresponding to the respective spheres 6 on the bottom force 5 to make cavities 11. These circular holes 8 are connected with each other through passages 9. The top force 10 is made from the same material as the bottom force 5 and is formed of a series of spheres required to lenses to be molded. |
