Eyeglass lens and design method, manufacturing method and design system for eyeglass lens
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United States of America Patent
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Mar 10, 2015
Grant Date -
Sep 12, 2013
app pub date -
Mar 11, 2013
filing date -
Mar 12, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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.
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Family
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Cited Art Landscape
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