Patent ID: 6385355
Filing Date: 2002-05-07
Classification: G02F

Abstract:
An optical deflection element, comprising:an optical waveguide having epitaxial or single orientation with electro-optic effect, provided on a conductive or semi-conductive single-crystal substrate to serve as a lower electrode, or a substrate on the surface of which a conductive or semi-conductive single-crystal thin film to serve as a lower electrode is formed; an electrode for controlling a light beam within the optical waveguide, disposed on the optical waveguide, the electrode forming an area, between the electrode and the single-crystal substrate or single-crystal thin film, that changes in refractive index in accordance with an applied voltage and deflects a light beam propagating through the optical waveguide in a first direction in accordance with the applied voltage; an emission prism for emitting the light beam within the optical waveguide in a second direction crossing the first direction; and a transparent electrode for controlling an emitted light beam, disposed between the emission prism and the optical waveguide, the transparent electrode forming an area, between the transparent electrode and the single-crystal substrate or single-crystal thin film, that changes in refractive index in accordance with an applied voltage and deflects a light beam emitted from the emission prism in the second direction in accordance with the applied voltage.