Liquid lens with gravity sag correction

A liquid lens includes a substrate, a transparent elastic membrane forming a cavity with the substrate, and a transparent fluid filling the cavity between the substrate and the membrane. The membrane has a pre-distorted, rotationally asymmetric shape in absence of the fluid in the cavity. When the c...

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Main Authors Masood, Taha, Wells, Spencer Allan, Ouderkirk, Andrew John, Liao, Christopher Yuan Ting, Ransley, James Howard Thomas, Stipe, Christopher, Diest, Kenneth Alexander, Elabbasi, Nagi Hosni, Diaz, Liliana Ruiz, Cressman, Laura
Format Patent
LanguageEnglish
Published 17.09.2024
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:A liquid lens includes a substrate, a transparent elastic membrane forming a cavity with the substrate, and a transparent fluid filling the cavity between the substrate and the membrane. The membrane has a pre-distorted, rotationally asymmetric shape in absence of the fluid in the cavity. When the cavity is filled with the fluid and the substrate is disposed vertically w.r.t. gravity at a pre-defined clocking angle, the membrane adopts a substantially rotationally symmetric shape due to elasticity of the membrane counteracting gravity exerting a downward force on the fluid in the cavity, reducing the effect of the gravity sag on optical performance of the liquid lens.
Bibliography:Application Number: US202117193921