Progressive Power Eyeglass Lens and Design Method Thereof
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United States of America Patent
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Issued Date -
Dec 29, 2011
app pub date -
Jun 9, 2011
filing date -
Jun 29, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A progressive power eyeglass lens includes an object side surface that includes a first progressive surface, an eyeball side surface that includes a second progressive surface, and a pair of points that is passed by a light beam passing through a rotation center of an eyeball of an eyeglasses wearer, the pair of points including a first point that exists on a principal meridian on the eyeball side surface between a progressive start point to a progressive end point, and a second point that exists on a principal meridian on the object side surface.
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