The focal spot shape and point spread function of liquid crystal microlens with different pattern electrodes

Shengwu Kang; Xinyu Zhang; Hongshi Sang; Changsheng Xie

doi:10.1117/12.2034819

23 August 2013 The focal spot shape and point spread function of liquid crystal microlens with different pattern electrodes

Shengwu Kang, Xinyu Zhang, Hongshi Sang, Changsheng Xie

Author Affiliations +

Proceedings Volume 8911, International Symposium on Photoelectronic Detection and Imaging 2013: Micro/Nano Optical Imaging Technologies and Applications; 89110T (2013) https://doi.org/10.1117/12.2034819
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

In this paper, we present a new LC lens with different pattern electrodes including triangle electrode, square electrode, pentagon electrode, hexagon and octagon electrodes. We demonstrate the focusing process of LC lens, when the electrodes are driven by the voltage signal, all the LC lens with different pattern electrodes have good focusing characters along the optical axis. In addition, a LC lens with different sub-electrode pattern is also introduced, the sub-electrodes are designed to circular pattern and each sub-electrode can be driven separately. If the sub-electrodes are driven by the same voltage signal, the LC lens can focus along the axis, while they are controlled separately, it can make the focus swing off the axis over the focal plane. We show the Interference patterns of LC lens with various pattern electrodes. The different focal spot shapes and the optical properties of LC microlens are also demonstrated experimentally.

Citation Download Citation

Shengwu Kang, Xinyu Zhang, Hongshi Sang, and Changsheng Xie "The focal spot shape and point spread function of liquid crystal microlens with different pattern electrodes", Proc. SPIE 8911, International Symposium on Photoelectronic Detection and Imaging 2013: Micro/Nano Optical Imaging Technologies and Applications, 89110T (23 August 2013); https://doi.org/10.1117/12.2034819

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