FABRICATING LENSES USING GRAVITY
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United States of America Patent
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Nov 24, 2016
app pub date -
Jan 30, 2015
filing date -
Jan 30, 2015
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Abstract
Disclosed is a lens fabrication method (100) which uses a droplet of polydimethylsiloxane (PDMS) solution (210) cured on a slide (214) to form a PDMS support layer (211) having a curved surface (211 a). Further PDMS droplet (210) is then deposited on the curved surface (211 a) of the PDMS support layer (211); the slide (214) is then inverted to allow gravitational force to pull the uncured, further PDMS 110 PDMS solution (210) down. The further PDMS solution (210) on the inverted slide is then cured. Each repetition of depositing, slide-inverting, and curing of the further PDMS droplet (210) adds an additional layer of PDMS, altering the shape and focal-length of the lens.
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