Electronic control liquid crystal cascade chip, preparation method thereof and polarizing microscope using the same

The invention discloses an electronic control liquid crystal cascade chip. The cascade chip comprises an electronic control liquid crystal micro-mirror group consisting of a plurality of electronic control liquid crystal micro-mirrors which are arranged in parallel, optical axes of the plurality of electronic control liquid crystal micro-mirrors coincide in the vertical direction, the placement directions of two adjacent electronic control liquid crystal micro-mirrors are opposite, each electronic control liquid crystal micro-mirror comprises a first substrate, a pattern electrode, a first orientation layer, a liquid crystal layer, a second orientation layer, a common electrode and a second substrate which are arranged in parallel from top to bottom. In a direction from top to bottom, theapertures of the pattern electrodes in all the electronic control liquid crystal micro-mirrors are gradually reduced, and one end of the pattern electrode and one end of the common electrode of each electronic control liquid