“…To-date, liquid crystal (LC) lenses are developed for wide application in many areas-diffraction optics, optical fibers, 3D imaging devices, information protection, etc. [5][6][7][8][9][10][11][12][13][14][15][16] They can be static and tunable. 17,18 Some LC lenses have spherical or curved front surface, some have two flat surfaces, and the focusing effect is achieved by inhomogeneous distribution of the LC director orientation.…”