Prescription lens and method of making same

Details Prescription lens and method of making same Prescription lens and method of making same

2011-08-23

2011-08-23

Schwartz, Jordan (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S168000, C351S169000

Reexamination Certificate

active

08002404

ABSTRACT:
The present invention relates to a method for manufacturing a prescription lens. In one embodiment, the method includes the steps of obtaining information of a prescription lens and information of a frame to accommodate the prescription lens, wherein the information of the prescription lens comprises a lens power, an optical area and a spherical front base curve, and wherein the information of the frame comprises a frame curve; calculating the maximum lens thickness of the prescription lens at the optical area according to the information of the prescription lens; selecting a lens according to the calculated maximum lens thickness at the optical area, the information of the prescription lens and the information of the frame; and processing the selected lens so as to obtain the prescription lens that has an intermediate zone surrounding the optical area and an edge portion surrounding the intermediate zone such that the thickness of the edge portion is substantially thinner than the maximum lens thickness of the optical area.

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