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Proceedings Paper

A passive autofocus system by using standard deviation of the image on a liquid lens
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Paper Abstract

Today most of applications have a small camera such as cell phones, tablets and medical devices. A micro lens is required in order to reduce the size of the devices. In this paper an auto focus system is used in order to find the best position of a liquid lens without any active components such as ultrasonic or infrared. In fact a passive auto focus system by using standard deviation of the images on a liquid lens which consist of a Dielectric Elastomer Actuator (DEA) membrane between oil and water is proposed.

Paper Details

Date Published: 1 April 2015
PDF: 6 pages
Proc. SPIE 9430, Electroactive Polymer Actuators and Devices (EAPAD) 2015, 94301Q (1 April 2015); doi: 10.1117/12.2084198
Show Author Affiliations
Pejman Rasti, Univ. of Tartu (Estonia)
Arko Kesküla, Univ. of Tartu (Estonia)
Henry Haus, Technische Univ. Darmstadt (Germany)
Helmut F. Schlaak, Technische Univ. Darmstadt (Germany)
Gholamreza Anbarjafari, Univ. of Tartu (Estonia)
Alvo Aabloo, Univ. of Tartu (Estonia)
Rudolf Kiefer, Univ. of Tartu (Estonia)

Published in SPIE Proceedings Vol. 9430:
Electroactive Polymer Actuators and Devices (EAPAD) 2015
Yoseph Bar-Cohen, Editor(s)

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