Characterization of the dynamic mechanical stability of liquid-filled lenses.

Hongbin Yu, Bin Guo, Angel Lin Tsu-Hui, Julius Tsai Ming Lin, Tack Boon Yee

Institute of Microelectronics, Agency for Science, Technology and Research (A*Star), Singapore Science Park II, Singapore 117685, Singapore. yhb_hust@yahoo.com

Optics express 2012 Oct 8

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In this paper, the dynamic mechanical stability of the liquid-filled lenses was studied, in which acoustic excitation was used as broad band perturbation sources and the resultant response of the lens was characterized using non-contact laser Doppler vibrometer. To the best of our knowledge, it's the first time that the mechanical stability of liquid-filled lenses was experimentally reported. Both experimental results and theoretical analysis demonstrate that the resonance of the lens will shift to higher frequency while the vibration velocity as well as its magnitude will be reduced accordingly when the pressure in the lens cavity is increased to shorten the focal length. All of these results will provide useful references to help researchers design their own liquid-filled lenses for various applications.

Citation

Hongbin Yu, Bin Guo, Angel Lin Tsu-Hui, Julius Tsai Ming Lin, Tack Boon Yee. Characterization of the dynamic mechanical stability of liquid-filled lenses. Optics express. 2012 Oct 8;20(21):23720-7