Spectacle lens
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United States of America Patent
Stats
-
May 9, 2006
Grant Date -
Apr 22, 2004
app pub date -
Sep 10, 2003
filing date -
Sep 10, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
There is provided a spectacle lens, which includes a central portion that is located at a middle section of the spectacle lens, average transmission power within the central portion being substantially constant, an upper portion that is located on upper side of the central portion, average transmission power within the upper portion changing continuously from a lower end of the upper portion to a top end of the spectacle lens, and a lower portion that is located on lower side of the central portion, average transmission power within the lower portion changing continuously from a top end of the lower portion to a lower end of the spectacle lens.
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