Author(s)

Shengwu Kang

Corresponding Author

Shengwu Kang

ABSTRACT

The aperture of traditional liquid crystal lens is usually only several hundred microns, which greatly limits its application. If the aperture of the liquid crystal lens can be enlarged, the liquid crystal lens will be more widely used. In the paper, a liquid crystal lens with a new type of electrode pattern is designed. The structure of this lens is similar to Fresnel lens. The electrodes of the whole lens are divided into upper and lower layers, the upper layer electrodes are designed into several concentric annular groups, and the lower layer electrodes are flat electrodes. This structure divides the liquid crystal layer into rings and the optical paths of adjacent rings differ by a wavelength, so that all regions of the light can be enhanced coherently in the imaging plane, and better focusing effect can be obtained. The design principle and simulation results of the lens are given in the paper.

KEYWORDS

Liquid crystal lens, large aperture, electrode pattern, simulation