Ophthalmic lenses incorporating a diffractive element
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United States of America Patent
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Issued Date -
Mar 30, 2006
app pub date -
Sep 22, 2005
filing date -
Sep 27, 2004
priority date (Note) -
Abandoned
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Abstract
An ophthalmic lens is provided that comprises a correction lens having a first focal region having a first focal power and a second focal region having a second focal power different from the first focal power. The ophthalmic lens further comprises a diffractive element having a diffractive element focal power that is additive to the second focal power. In some embodiments, the second focal region is a multi-focal region that may be a progressive addition region or an electro-active region.
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