Patent ID: 7500844
Filing Date: 2009-03-10
Classification: B29D,Y10S

Abstract:
1. A mold for molding an optical element from a liquid polymerizable composition comprising: a mold cavity having a generally circular shape with a geometrical center and a main plane; a sprue base with a longitudinal axis; and a feed connection that makes the sprue base communicate with a feed sill of the mold cavity; wherein: the longitudinal axis of the sprue base and the geometrical center of the mold cavity define a mold symmetry plane, wherein the mold symmetry plane is orthogonal to the main plane of the mold cavity, and the intersection of the mold symmetry plane and the main plane defines a mold main axis; the longitudinal axis of the sprue base forms an angle from 0 to 30° with a line perpendicular to the main plane of the mold cavity; and the feed connection comprises: