Detachable lens for variable focus spectacles
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United States of America Patent
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Mar 10, 2015
Grant Date -
Jul 28, 2011
app pub date -
Apr 5, 2011
filing date -
Oct 10, 2006
priority date (Note) -
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Abstract
A detachable lens for variable focus spectacles, the lens including a plurality of magnets in a groove on its rear surface for holding the lens to the spectacles. An interlocking boss keeps the lens from sliding off the spectacles, and a locating tab provides a means for assuring that the lens is installed on the correct side of the spectacles and with the proper orientation.
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