Method for the manufacture of cost-optimized spectacle lenses
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United States of America Patent
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Oct 20, 2015
Grant Date -
Jun 7, 2012
app pub date -
Dec 6, 2011
filing date -
Dec 6, 2010
priority date (Note) -
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Abstract
A method for manufacture of spectacle glasses from prefabricated blanks made without cutting. Each prefabricated blank has a front side not to be finished and an opposite back side. The front side and the back side have at least one optical focus in common. The method includes finishing the back side by calculating a prescription surface based on a prescription of a person. The prescription describes the vision defects of a left and a right eye of the person. The machined back side and the front side together form a first prescription lens and a second prescription lens. The method further includes making first and second spectacle glasses from the first and second prescription lenses. Focal points of the first spectacle glass correct the vision defect of the left eye and focal points of the second spectacle glass correct the vision defect of the right eye of the person.
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Family
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