Low-driving-voltage light beam scanner based on liquid crystal cladding slab waveguide

The invention discloses a low-driving-voltage light beam scanner based on a liquid crystal cladding slab waveguide, and belongs to the technical field of light beam scanners. The problems that an existing light beam scanner is too high in driving voltage, low in energy utilization rate and small in scanning angle are solved. The light beam scanner comprises a first substrate, a first conductive film, a first orientation layer, a liquid crystal layer, a second orientation layer, a core layer, a substrate layer, a second conductive film, a second substrate, a first voltage source and a second voltage source, and the first substrate, the first conductive film, the first orientation layer and the second conductive film are uniform in thickness. The second substrate is an inverted trapezoidal body with the thickness of the inclined plane being decreased regularly or irregularly, the second orientation layer, the core layer and the substrate layer are trapezoidal bodies with the thickness of the inclined plane bein