Aspheric lens and method for making same

Details Aspheric lens and method for making same Aspheric lens and method for making same

2007-06-05

2007-06-05

Spector, David N. (Department: 2873)

Optical: systems and elements

Lens

Including a nonspherical surface

C359S708000, C264S001320, C264S001100

Reexamination Certificate

active

11136788

ABSTRACT:
An aspheric lens (1) includes a substrate (10) and an aspheric film (12). The substrate (10) is made of glass, and has a spherical surface (102). The aspheric film (12) is formed on a surface of the substrate (10), and is made of plastic material. The aspheric film (12) has an aspheric surface (122). A method for making the aspheric lens (1) includes the steps of: providing a substrate (10) made of glass, the substrate (10) having a spherical surface (102); putting the substrate (10) in an injection mold, the injection mold having an aspheric surface (202); closing the injection mold, and injecting a plastic material on the substrate (10); solidifying the plastic material, thereby forming an aspheric film (12) on the substrate (10); and opening the injection mold, and obtaining the aspheric lens (1).

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