Error-tolerant progressive glass design
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United States of America Patent
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Aug 10, 2010
Grant Date -
May 17, 2007
app pub date -
Aug 17, 2004
filing date -
Aug 29, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method of producing a progressive spectacle glass by defining an ordering value for the average use value in the far reference point of the progressive spectacle glass, calculating the progressive spectacle glass while taking into account a calculation value of the average use value in the far reference point, the calculation value having a negative desired refraction deviation between 0.03 dpt and 0.2 dpt with respect to the ordering value in the far reference point, and producing the calculated progressive spectacle glass.
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