Patent ID: 8449111
Filing Date: 2013-05-28
Classification: G02C

Abstract:
1. A method for manufacturing a prescription lens fitted for an eyeglass frame, comprising the steps of: (a) obtaining information of a prescription lens from a prescription and information of a frame to accommodate the prescription lens, wherein the information of the prescription lens comprises a lens power, an optical zone and a spherical front base curve, and wherein the information of the frame comprises a frame curve characterized with an angle and tilt of the frame; (b) calculating an optimum size of the optical zone as well as the maximum lens thickness of the prescription lens at the optical zone according to the information of the prescription lens and the information of the frame; (c) selecting a lens according to the calculated maximum lens thickness at the optical zone, the information of the prescription lens and the information of the frame; and (d) processing the selected lens so as to obtain the prescription lens having: