| 摘要 |
PURPOSE:To obtain an optical molding high in surface accuracies and having no burr or defect at all, by a method wherein liquid containing a polymerizable substance and another liquid having no compatibility with said liquid substantially are brought into contact with each other so that an interface between these liquids forms a curved surface; then, the polymerizable substance is polymerized while maintaining the configuration of the interface substantially. CONSTITUTION:When liquid 2 having a large specific gravity and consisting of carbon tetrachloride or the like, another liquid 3 having a small specific gravity and consisting of a solution including polymerizable substance or the like, gas 4 consisting of nitrogen or the like are laminated sequentially from the bottom surface 1a of a cylindrical vessel 1, an interface between the liquid 2, having a large specific gravity, and the liquid 3, containing the polymerizable substance, forms a curved surface based on the balance of a difference of surface tensions between the liquids, an interface tension, buoyancy from the liquid 2 to the liquid 3 and the like, since the liquid 2 has no compatibility with the liquid 3 substantially. On the other hand; an interface between the solution 3 and the gas 4 forms a curved surface normally by the balance of power based on the surface tension of the liquid 3, the size of a drip consisting of the liquid 3, gravity, atmospheric pressure or the like. The drip of liquid having a desired configuration and a radius of curvature may be obtained by controlling various above-described forces.
|
