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학술지 Electroactive Polymer Actuator for Lens-Drive Unit in Auto-Focus Compact Camera Module
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저자
이형근, 최낙진, 정선경, 박강호, 정회원, 심재규, 류재욱, 김종대
발행일
200912
출처
ETRI Journal, v.31 no.6, pp.695-702
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.09.1209.0023
협약과제
09MB1500, 유비쿼터스 단말용 부품 모듈, 김종대
초록
We propose a lens-drive unit composed of an ionic polymer-metal composite (IPMC) for an auto-focus compact camera module in cellular phones to solve the power consumption problem of voice coil motors which are widely used in commercial products. In this research, an IPMC incorporated into a lens-drive unit is designed to implement a large displacement in low-power consumption by using an anisotropic plasma treatment. Experimental results show that a camera module containing IPMCs can control and maintain the position of the lens by using proportional integral derivative control with a photo-reflective position sensor despite the non-linear actuation behavior of IPMCs. We demonstrate that the fabrication and commercialization of a lens actuator that has a large displacement and low power consumption using IPMCs is possible in the near future. Copyright © 2009 ETRI.
키워드
Compact camera module (CCM), Ionic polymer-metal composite (IPMC), Lens-drive unit, Power consumption