Variable Focal Length Lens
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Oct 23, 2008
app pub date -
Apr 1, 2005
filing date -
Apr 1, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A variable focal length lens, comprises a chamber arrangement containing two transparent liquids adjacent one another with an interface therebetween, the chamber arrangement allowing light to pass along an optical axis through the transparent liquids and across the interface, the lens focusing the passing light. A piezoelectric actuator is arranged, on activation, to change the pressure of one of the liquids so that the interface moves, for example by changing shape, to change the focal length of the lens.
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Cited Art Landscape
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