An electronically controlled liquid crystal plane diffraction micromirror and its preparation method

Abstract

The invention discloses an electronically controlled liquid crystal plane diffraction micromirror, which comprises a first substrate, a first patterned electrode lead layer, a first insulating layer, a first patterned electrode, and a first liquid crystal alignment layer arranged in parallel from top to bottom. , a liquid crystal layer, a second liquid crystal alignment layer, a second pattern electrode, a second insulating layer, a second pattern electrode lead layer, and a second substrate, each of the first pattern electrode and the second pattern electrode includes a plurality of The concentrically arranged electric drive control loop wire electrodes, each electric drive control loop wire electrode has the same shape, and are all non-closed rings, and a plurality of through holes are arranged on the lead layer of the first pattern electrode, the number of which is It is the same as the total number of terminals of all the electrically driven control ring electrodes in the first pattern electrode. The invention can solve the technical problem that the existing diffractive micromirror has a certain transmission light loss, and the technical problem that the thermophysical property of the liquid crystal material will be adversely affected because it is driven and controlled based on a frequency signal.

Description

technical field [0001] The invention belongs to the technical field of optical lenses, and more specifically relates to an electronically controlled liquid crystal plane diffraction micromirror and a preparation method thereof. Background technique [0002] Nowadays, diffractive micromirrors have been widely used. Among them, liquid crystal diffractive micromirrors, as a new type of diffractive light control device, are usually composed of multiple diffractive phase units with the same or similar basic shape, characteristic structure and size. A typical diffractive phase unit includes a sheet-like micro-nano electrode and a liquid crystal interlayer. The control electrode of the liquid crystal diffraction micromirror presents a patterned feature, and a basic pattern segment corresponds to a sheet-shaped micro-nano electrode of the diffraction phase unit. [0003] Usually, it is necessary to fabricate the boundary anchor mode of the liquid crystal film on the control electro...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides an electronically controlled liquid crystal plane diffraction micromirror and a preparation method thereof, the purpose of which is to solve the technical problem of transmission light loss in the existing liquid crystal diffraction It is a technical problem based on the frequency signal driving that will adversely affect the thermal properties of the liquid crystal material, and the technical problem that the intermittent linear groove will significantly reduce the shaping, transformation or control efficiency of the infrared beam, and has high beam control efficiency , wide spectral range, good optical field adaptability, and easy coupling with other optical, optoelectronic and mechanical structures

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