24 October 2012 Optical zoom lens module using MEMS deformable mirrors for portable device
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The thickness of the smart phones in today’s market is usually below than 10 mm, and with the shrinking of the phone volume, the difficulty of its production of the camera lens has been increasing. Therefore, how to give the imaging device more functionality in the smaller space is one of the interesting research topics for today’s mobile phone companies. In this paper, we proposed a thin optical zoom system which is combined of micro-electromechanical components and reflective optical architecture. By the adopting of the MEMS deformable mirrors, we can change their radius of curvature to reach the optical zoom in and zoom out. And because we used the all-reflective architecture, so this system has eliminated the considerable chromatic aberrations in the absence of lenses. In our system, the thickness of the zoom system is about 11 mm. The smallest EFL (effective focal length) is 4.61 mm at a diagonal field angle of 52° and f/# of 5.24. The longest EFL of the module is 9.22 mm at a diagonal field angle of 27.4 with f/# of 5.03.°
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Jia-Shiun Lu and Guo-Dung J. Su "Optical zoom lens module using MEMS deformable mirrors for portable device", Proc. SPIE 8488, Zoom Lenses IV, 84880D (24 October 2012); doi: 10.1117/12.929621; https://doi.org/10.1117/12.929621


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