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Marcus Bagnell
2007 U.S. Student
Advisor: Shin-Tson Wu
"Variable Focus Liquid Lens"
As cameras used in cell phones and surveillance equipment get smaller,
the optical systems required for these devices must also decrease in size.
Traditional, solid lens systems use motors to change the distance between
lenses which changes the focal length. These systems are much too bulky
to fit into cell phones. Liquid lenses change the shape of the lens surface
itself to change the focal length. In this study, we demonstrate a lens that
has its focal length controlled by an external pressure. The lens is easy to
manufacture and has large tunability. This prototype lens has the potential
to be scaled down to a very small size. ...full text
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