Eyeglass lens and design method, manufacturing method and design system for eyeglass lens

摘要

An eyeglass lens, comprising: a hidden mark defining a predetermined reference point; and refractive portions arranged along a meridian extending substantially in a vertical direction via the predetermined reference point, and wherein the refractive portions comprises: a first refractive portion located on a lower side of the predetermined reference point and having a first refractive power; a second refractive portion located on an upper side of the predetermined reference point and having a second refractive power smaller than the first refractive power; and an intermediate refractive portion in which refractive power continuously decreases, and an aberration distribution in the first refractive portion is substantially symmetrical in a left and right direction with respect to the meridian extending in the vertical direction, and an aberration distribution in the second refractive portion is asymmetrical in the left and right direction with respect to the meridian shifted to an ear side.

主权项

1. An eyeglass lens, comprising:
a hidden mark defining a predetermined reference point on the eyeglass lens; and a plurality of refractive portions arranged along a meridian extending substantially in a vertical direction on the eyeglass lens via the predetermined reference point defined by the hidden mark, the plurality of refractive portions comprising:
a first refractive portion which is located on a lower side of the predetermined reference point and has a first refractive power;a second refractive portion which is located on an upper side of the predetermined reference point and has a second refractive power smaller than the first refractive power; andan intermediate refractive portion in which refractive power continuously decreases from the first refractive portion to the second refractive portion, wherein: an aberration distribution in the first refractive portion is substantially symmetrical in a left and right direction with respect to the meridian extending in the vertical direction in the first refractive portion; and an aberration distribution in the second refractive portion is asymmetrical in the left and right direction with respect to the meridian shifted to an ear side in the second refractive portion in a wearing state.