Patent ID: 7990619

Claim:
A method for making a lens, the method comprising: providing a first light pervious substrate and a second light pervious substrate, the first light pervious substrate comprising a first surface and an opposite second surface, the second light pervious substrate comprising a third surface and a fourth surface; forming a first optically active part on the first surface of the first light pervious substrate, wherein the step of forming the first optically active part comprises: providing an imprinting mold, the imprinting mold comprising a surface and a molding cavity defined in the surface, applying a to-be-solidified material in the molding cavity of the imprinting mold, pressing the imprinting mold towards the first light pervious substrate, solidifying the to-be-solidified material, thus forming the first optically active part, and removing the imprinting mold from the first light pervious substrate; forming a second optically active part on the third surface of the second light pervious substrate, wherein the step of forming the second optically active part comprises: providing an imprinting mold, the imprinting mold comprising a surface and a molding cavity defined in the surface, applying a to-be-solidified material in the molding cavity of the imprinting mold, pressing the imprinting mold towards the second light pervious substrate, solidifying the to-be-solidified material, thus forming the second optically active part, and removing the imprinting mold from the second light pervious substrate; and attaching the fourth surface of the second light pervious substrate to the second surface of the first light pervious substrate in such a manner that the first and the second optically active parts have a common optical axis.