Spherically Encapsulated Variable Liquid Lens on Coplanar Electrodes

Autor: Jae Yong An, Sohee Kim, Jong-Hyun Lee, Ji Hwan Hur
Rok vydání: 2011
Předmět:
Zdroj: IEEE Photonics Technology Letters. 23:1703-1705
ISSN: 1941-0174
1041-1135
DOI: 10.1109/lpt.2011.2167606
Popis: We herein demonstrated an electrowetting liquid lens using a spherical polymeric encapsulation on coplanar electrodes. In order to vary the focal length, the conductive inner lens was actuated by applying a voltage to the pinwheel-shaped coplanar electrodes. Silicone oil with a low vapor pressure was used as a nonconductive outer liquid lens, which was spherically encapsulated by chemical vapor deposition of thin-film polymer. The use of polymeric (parylene) encapsulation with coplanar indium-tin-oxide (ITO) electrodes provides a unique advantage in achieving an improved transparency, a wafer-level packaging of the liquid lens and the convenient accessibility of the electrical signal.
Databáze: OpenAIRE