What question did this study set out to answer?

To develop and evaluate a miniature variable-focus optical lens using the electrowetting-controlled meniscus between two immiscible liquids.

August 10, 2004Applied Physics Letters1,052 citationsOpen Access

Variable-focus liquid lens for miniature cameras

SKS. Kuiper BHB.H.W. Hendriks

Key Points

To develop and evaluate a miniature variable-focus optical lens using the electrowetting-controlled meniscus between two immiscible liquids.
Contained two immiscible liquids inside a transparent cylindrical tube to form a self-centering optical meniscus.
Applied electrowetting to modulate the curvature of the liquid-liquid interface and adjust focal length.
Observed lens dynamics through the transparent tube wall and constructed a miniature achromatic camera module prototype.
Demonstrated that the dual-liquid interface establishes a self-centered lens yielding high optical performance.
Successfully adjusted focal length via electrical control of meniscus curvature without mechanical movement.
Integrated the variable-focus element into a functional miniature achromatic camera module suitable for portable electronics.

Abstract

The meniscus between two immiscible liquids can be used as an optical lens. A change in curvature of this meniscus by electrowetting leads to a change in focal distance. It is demonstrated that two liquids in a tube form a self-centered lens with a high optical quality. The motion of the lens during a focusing action was studied by observation through the transparent tube wall. Finally, a miniature achromatic camera module was designed and constructed based on this adjustable lens, showing that it is excellently suited for use in portable applications.

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Cite This Study

Kuiper et al. (2004) studied this question.

synapsesocial.com/papers/69fadaeb0f3e3dd74db8582f https://doi.org/10.1063/1.1779954

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August 10, 2004Applied Physics Letters1,052 citationsOpen Access

Variable-focus liquid lens for miniature cameras

SKS. Kuiper BHB.H.W. Hendriks

Key Points

To develop and evaluate a miniature variable-focus optical lens using the electrowetting-controlled meniscus between two immiscible liquids.
Contained two immiscible liquids inside a transparent cylindrical tube to form a self-centering optical meniscus.
Applied electrowetting to modulate the curvature of the liquid-liquid interface and adjust focal length.
Observed lens dynamics through the transparent tube wall and constructed a miniature achromatic camera module prototype.
Demonstrated that the dual-liquid interface establishes a self-centered lens yielding high optical performance.
Successfully adjusted focal length via electrical control of meniscus curvature without mechanical movement.
Integrated the variable-focus element into a functional miniature achromatic camera module suitable for portable electronics.

Abstract

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Cite This Study

Kuiper et al. (2004) studied this question.

synapsesocial.com/papers/69fadaeb0f3e3dd74db8582f https://doi.org/10.1063/1.1779954

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