Light deflecting apparatus

A light deflecting apparatus, comprising:

• first and second light deflecting liquid crystal cells, each corresponding to each eye of a user and each comprising a liquid crystal layer including liquid crystal molecules with positive dielectric anisotropy and exhibiting a cholesteric blue phase when no voltage is applied, a pair of transparent substrates facing each other and sandwiching the liquid crystal layer, a pair of transparent electrodes each being formed above a surface of each transparent substrate facing the liquid crystal layer and applying a voltage to the liquid crystal layer, a prism layer formed above the surface of one of the transparent substrates facing the liquid crystal layer;
• and
• a driving device that performs a first control for alternately switching between a first state wherein a first high voltage is applied to the first light deflecting liquid crystal cell for letting the first light deflecting liquid crystal cell be in a homeotropic phase while a second low voltage is applied to the second light deflecting liquid crystal cell for letting the second light deflecting liquid crystal cell be in a cholesteric blue phase and a second state wherein a third low voltage is applied to the first light deflecting liquid crystal cell for letting the first light deflecting liquid crystal cell be in a cholesteric blue phase while a fourth high voltage is applied to the second light deflecting liquid crystal cell for letting the second light deflecting liquid crystal cell be in a homeotropic phase.