(EN)
The present invention encompasses, in part, a method and apparatus for lens casting in which two molds(20,40), preferably formed of plastic, are interconnected or joined together via a ring (50)to form a mold cavity(60) having substantially the same dimensions of the lens to be formed therein. The invention is further directed to compositions and methods used in lens casting. In a first implementation the invention includes a mold(10) having a ring(50) having an interior periphery(54); a front mold(20) formed of a plastic and having a lens-forming surface(22), an edge(28) circumscribing the lens-forming surface that is sized to be complementarily received within a portion of the interior periphery of the ring, and a base(30) having dimensions greater than the interior periphery; and a rear mold(40) formed of a plastic and having a lens-forming surface(42).
(ZH) 本发明部分涉及用于透镜铸造的方法和设备，其中两个优选由塑料制成的模具(20和40)通过环(50)连接或结合在一起，来形成具有与将形成其中的所述透镜的尺寸基本相同的模腔(60)。本发明还涉及用于透镜铸造中的组成和方法。在本发明的第一应用中，包括模具(10)，具有：环(50)，其带有内圆周(54)；前模具(20)，由塑料制成，具有透镜形成表面(22)，边缘(28)和底座(30)，该边缘(28)围绕所述透镜形成表面，该透镜形成表面尺寸制成互补地容纳在该环的内圆周内，该底座(30)具有大于该内圆周的尺寸；和后模具(40)，由塑料制成，具有透镜形成表面(42)。
