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Proceedings Paper

Liquid crystal variable focus lens based on Fresnel zone plate
Author(s): Qi Wang; Da-Wei Zhang; Jia-Bi Chen; Song-Lin Zhuang
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Paper Abstract

The liquid crystal (LC) variable focus lens combining LC Fresnel Zone Plate with spherical lens (FZP-S) presented in the paper is an electro-optical system using the applied voltages to control the variation of its focal length. Theoretical study for the mathematic model of the hybrid FZP-S lens shows that the focus length of the hybrid lens can use the similar method to that of the system with conventional refractive lens. The LC FZP with the electrodes widths vary as a FZP which was fabricated on a glass substrate with two layers of transparent electrodes in our experiment. The minimum of the electrodes width is 1.2um.The advantage of such system is that the focal length of which can be changed electrically without mechanical movement. The effect of the focus length variation was verified by the experiment results.

Paper Details

Date Published: 19 February 2009
PDF: 7 pages
Proc. SPIE 7279, Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration, 72791X (19 February 2009); doi: 10.1117/12.823827
Show Author Affiliations
Qi Wang, Univ. of Shanghai for Science and Technology (China)
Da-Wei Zhang, Univ. of Shanghai for Science and Technology (China)
Jia-Bi Chen, Univ. of Shanghai for Science and Technology (China)
Song-Lin Zhuang, Univ. of Shanghai for Science and Technology (China)


Published in SPIE Proceedings Vol. 7279:
Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration
Liming Zhang; Michael J. O'Mahony, Editor(s)

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