Progressive-power lens designing method, progressive power lens designing system, and progressive-power lens

摘要

A progressive-lens designing system includes a manufacturer-side terminal installed in a lens manufacturer connected to a shop-side terminal installed in a spectacle shop or any other location via a network. The manufacturer-side terminal includes an optimization coefficient setting section that uses a variety of data received from the shop-side terminal to set an optimization coefficient for each target object in specific work, a dioptric power computing section that computes target dioptric power for each target object, a lens designing section that performs lens design, and an order processing section that performs order processing when receiving an order placed from the shop-side terminal.

主权项

1. A progressive-power lens manufacturing method for manufacturing a progressive-power lens having two distinct vision points and at least one quasi-distinct vision point, the method comprising:
setting priorities among at least three target objects viewed through the progressive-power lens; assigning a point on the progressive-power lens through which a target object having a third or lower level of the priorities is viewed as the quasi-distinct vision point and setting an optimization coefficient for the target object based on the distance between the quasi-distinct vision point and the target object and the magnitude of change in the distance; setting dioptric power necessary at the quasi-distinct vision point by using a predetermined method; optimizing the amounts of aberrations and a dioptric power error at the quasi-distinct vision point based on the optimization coefficient and the dioptric power; and manufacturing the progressive-power lens having the quasi-distinct vision point and the dioptric power set in the above steps.