NANOVOIDED TUNABLE BIREFRINGENCE
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United States of America Patent
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Issued Date -
Jun 11, 2020
app pub date -
Jan 30, 2019
filing date -
Dec 11, 2018
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Abstract
A form birefringent optical element includes a structured layer and a dielectric environment disposed over the structured layer. At least one of the structured layer and the dielectric environment includes a nanovoided polymer, the nanovoided polymer having a first refractive index in an unactuated state and a second refractive index different than the first refractive index in an actuated state. Actuation of the nanovoided polymer can be used to reversibly control the form birefringence of the optical element. Various other apparatuses, systems, materials, and methods are also disclosed.
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