Microelectromechanical-System-Based Variable-Focus Liquid Lens for Capsule Endoscopes
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概要
- 論文の詳細を見る
A liquid lens based on the electrowetting phenomenon was designed to be cylindrical to minimize dead area. The lens was fabricated with microelectromechanical-system (MEMS) technology using silicon thin film and wafer bonding processes. A multiple dielectric layer comprising Teflon, silicon nitride, and thermal oxide was formed on the cylinder wall. With a change of 11 Vrms in the applied bias, the lens module, including the fabricated liquid lens, showed a focal length change of approximately 166 mm. A capsule endoscope was assembled, including the lens module, and was successfully used to take images of a pig colon at various focal lengths.
- 2009-05-25
著者
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Sung Man
Korea University
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Kim Young
Korea And College Of Pharmacy Chungbuk National University
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Choi Woo
Bnp Science
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Min Nam
Korea University, Anam-dong, Seongbuk-gu, Seoul 136-701, Korea
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Seo Jun
Korea University, Anam-dong, Seongbuk-gu, Seoul 136-701, Korea
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Seo Sang
Korea University, Anam-dong, Seongbuk-gu, Seoul 136-701, Korea
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Han Seungoh
Hoseo University, 165 Sechul-ri, Baebang-myun, Asan, Chungnam-do 336-795, Korea
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Kang Moon
Korea University, Anam-dong, Seongbuk-gu, Seoul 136-701, Korea
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Kim Young
Korea University, Anam-dong, Seongbuk-gu, Seoul 136-701, Korea
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