Liquid Crystal Lens with Spherical Electrode

Application of Ferroelectric Liquid Crystals to Optical Devices

“…An LC lens has major advantages such as high-speed response, compactness, light weight, and low electrical consumption in comparison with a mechanical lens. LC lenses fabricated using NLCs have been reported by many research groups [6][7][8][9][10][11][12]. In order to realize a high performance of the lens effect, it is necessary to set the thickness of the LC film or the LC cell gap large.…”

Liquid Crystal Lens Array with High Fill-Factor Fabricated by an Imprinting Technique

“…In order to produce a bell-like phase profile in each lens element of the LC, several types of the lens configurations have been studied so far. However, existing configurations of LC lens arrays with patterned electrodes or surface relief structures [6][7][8][9][10][11][12] have structurally intrinsic drawbacks such as the limited aperture ratio and the optical efficiency. Therefore, a new concept of designing the LC lens arrays is required for practical applications.…”

A focus-switchable lens made of polymer–liquid crystal composite

“…One is to use the patterned electrodes. Several kinds of LC lenses with specially designed electrodes structures have been reported previously [1][2][3][4][5][6][7][8]. With these special electrodes, an inhomogeneous electric field is generated, and LC director will align along the field direction; thus, a tunable lens is formed.…”