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Optical Engineering

Biomimetic optical system using polymer lenses with tunable focus
Author(s): Dan Liang; Ke Xiang; Jia-Wei Du; Jun-Nan Yang; Xuan-Yin Wang
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Paper Abstract

A biomimetic system using polymer lenses for the optical design and application is developed. The system mainly consisted of a bionic cornea lens, voice coil motor, compression ring, bionic crystalline lens, substrate, and CCD sensor. By controlling the current of the voice coil motor, we could change the motion of the compression ring to alter the curvature radius of the bionic crystalline lens, thus adjusting the focal length of the whole system. The integrated constructure of the optical system was presented, as well as the detailed description of the lens composition, material, and fabrication process. Images under different displacement loads were captured, the relationship among the curvature radius, observed back focal length, and predicted effective focal length was analyzed, and the spot diagram of the optical system was simulated using ZEMAX software. The focal length of the optical system ranged from 17.3 to 24.5 mm under a tiny displacement load from 0 to 0.14 mm. Besides, the images captured at different rotating angles presented almost identical patterns and the same image quality, which showed good robustness to the gravity. The biomimetic optical system is of interest to develop an integrated, low-cost, and stable imaging system.

Paper Details

Date Published: 15 October 2014
PDF: 7 pages
Opt. Eng. 53(10) 105101 doi: 10.1117/1.OE.53.10.105101
Published in: Optical Engineering Volume 53, Issue 10
Show Author Affiliations
Dan Liang, Zhejiang Univ. (China)
Ke Xiang, Zhejiang Univ. (China)
Jia-Wei Du, Zhejiang Univ. (China)
Jun-Nan Yang, Zhejiang Univ. (China)
Xuan-Yin Wang, Zhejiang Univ. (China)

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