9 September 2011 Continuous optical zoom module based on two deformable mirrors for mobile device applications
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In recent years, optical zoom function of the mobile camera phones has been studied. However, traditional systems use motors to change separation of lenses to achieve zoom function, suffering from long total length and high power consumption, which is not suitable for mobile phones use. Adopting MEMS polymer deformable mirrors in zoom systems has the potential to reduce thickness and have the advantage of low chromatic aberration. In this paper, we presented a 2X continuous optical zoom systems for mobile phones, using two deformable mirrors, suitable for 5-Mega-pixel image sensors. In our design, the thickness of the zoom system is about 11 mm. The smallest EFL (effective focal length) is 4.7 mm at full field angle of 52° and the f/# is 4.4. The longest EFL of the module is 9.4 mm and the f/# is 6.4.
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Yu-Hung Lin, Yu-Hung Lin, Guo-Dung J. Su, Guo-Dung J. Su, "Continuous optical zoom module based on two deformable mirrors for mobile device applications", Proc. SPIE 8129, Novel Optical Systems Design and Optimization XIV, 812907 (9 September 2011); doi: 10.1117/12.892971; https://doi.org/10.1117/12.892971

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