LENS DESIGN METHOD, LENS MANUFACTURING METHOD, LENS DESIGN PROGRAM, AND LENS DESIGN SYSTEM

摘要

[Problem] To provide a lens design method that has a high degree of freedom in thickness of a spectacle lens at each position. [Solving means] A lens design method includes: changing curve data including a curve value of a distance vision part and a curve value of a near vision part of a progressive power lens on an object side and a curve value of a distance vision part and a curve value of a near vision part of the progressive power lens on an eyeball side so as to be suited to prescription values to calculate a plurality of sets of the curve data (S4); and calculating, for each of the calculated sets of the curve data, a thickness at a second position on the progressive power lens that satisfies thickness conditions for a first position on the progressive power lens (S6).