Holographic waveguide lens and preparation method thereof

Abstract

The present application provides a holographic waveguide lens and a preparation method thereof, the holographic waveguide lens including a first lens substrate, a second lens substrate, an in-coupling grating, an out-coupling grating, a first transparent electrode, and a second transparent electrode. The first transparent electrode, the out-coupling grating, and the second transparent electrode are collectively divided into a plurality of sub-regions, and a voltage between the first transparent electrode and the second transparent electrode for each sub-region is set based on an electro-optical response curve and a diffraction efficiency of a polymer-dispersed liquid crystal holographic grating in the sub-region. By applying an adjustable voltage to the out-coupling grating located between the first lens substrate and the second lens substrate using the first transparent electrode and the second transparent electrode, the diffraction efficiency of different regions of the out-coupling grating is adjusted, thereby improving the uniformity of exit pupil light.

Dependencies are inferred from the claim text.