PROBLEM TO BE SOLVED: To attain a cross cylinder without requiring a mechanical mechanism for rotation or switching.SOLUTION: An optical device comprises: a pair of glass substrates 121 and 122 that is arranged with a gap a transparent polar liquid 132 that is encapsulated between the pair of the glass substrates 121 and 122 and has a first refractive index a transparent non-polar liquid 133 that is separated from the polar liquid 132, and has a second refractive index an electrode that applies a voltage between the glass substrates 121 and 122 a control unit that controls an in-plane distribution between the glass substrates 121 and 122 of the voltage and a lens that is formed by any of the polar liquid 132 or the non-polar liquid 133. The lens is configured to adjust the in-plane distribution to thereby have a first optical characteristic in a first radial direction, and a second optical characteristic in a second direction diameter different from the first radial direction.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】回転や切り替えのための機械的な機構を必要としないクロスシリンダを得る。【解決手段】隙間を有して配置された一対のガラス基板121,122と、一対のガラス基板121,122の間に封入された透明で第1の屈折率を有する有極性液132および有極性液132と分離し透明で第2の屈折率を有する無極性液133と、ガラス基板121,122の間に電圧を加える電極と、前記電圧のガラス基板121,122間における面内分布を制御する制御部と、有極性液132または無極性液133により形成されるレンズとを備え、前記レンズは、前記面内分布を調整することで、第1の径方向において第1の光学特性を有し、前記第1の径方向と異なる第2の径方向において第2の光学特性を有する。【選択図】図1
