Optical device and display apparatus

摘要

An optical device characterized by comprising a light transmissive plate-shaped light guide (154) for guiding light incident from an end surface, an optical control layer (150) provided on a lower surface of said plate-shaped light guide through a transparent electrode (151) provided as a first electrode, a reflection film (152) provided on a lower surface of said optical control layer, a second electrode (153) provided on a lower surface of said reflection film, and a substrate (155) provided on a lower surface of said second electrode,
wherein said optical control layer changes in scattering degree or diffraction efficiency by an electric field applied by said first electrode and said second electrode.