Light control chip based on electric control liquid crystal dual-mode micro lens

Abstract

The invention discloses a light control chip based on an electric control liquid crystal dual-mode micro lens. The chip comprises an area array electric control liquid crystal dual-mode micro lens, wherein the area array electric control liquid crystal dual-mode micro lens comprises: a liquid crystal material layer; a first liquid crystal initial orientation layer, a first electrode layer, an electric insulation layer, a second electrode layer, a first substrate and a first antireflection film which are sequentially arranged on the upper surface of the liquid crystal material layer; and a second liquid crystal initial orientation layer, a common electrode layer, a second substrate and a second antireflection film which are sequentially arranged on the lower surface of the liquid crystal material layer. The first electrode layer is formed by a homogenization graphene film; circular holes in m*n-element array distribution are formed on the homogenization graphene film; each of the common electrode layer and the second electrode layer is formed by a homogenization graphene film which is homogeneous with the first electrode layer. The chip is capable of carrying out the operation of collecting array light or diverging and transforming light of wave beams, and has the characteristics of being high in optical wave beam modulation capability, excellent in electro-optical performance, high in environmental adaptability and easy to match with other optical and optoelectronic mechanical structures.

Description

technical field [0001] The invention belongs to the technical field of optical beam precision measurement and control, and more specifically relates to a light control chip based on an electronically controlled liquid crystal dual-mode microlens. Background technique [0002] In recent years, the electronically controlled liquid crystal microlens technology has developed rapidly, and has shown strong electric focusing, electric swing focus, electric control wave front, electric point spread function, electric depth of focus, electric gating aperture, electric Energy efficiency characteristics such as adjusting the photosensitive field of view, electrically switching the light convergence and light divergence mode, and electrically adjusting the beam divergence shape and degree. The time constant between the stable light-controlling states of liquid crystal materials is currently as low as sub-milliseconds, and the laboratory level is as low as microseconds. The light contro...

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Problems solved by technology

The defects of the above-mentioned typical structure mainly include: (1) The transmittance of light waves is generally about 85%, and for higher transmittance requirements, an additional anti-reflection film system is required; (2) The film alloy electrode material has spectral transmission (3) Carriers in the alloy material, such as cations and electrons, sometimes penetrate the initial alignment layer of the liquid crystal and penetrate into the liquid crystal In the material, by neutralizing the polar groups of the liquid crystal molecules, the liquid crystal molecules lose the ability to control the dielectric, thereby significantly reducing the light control efficiency and significantly shortening the life of the device; (4) Due to the large resistance of the metal material, its thermal effect And the skin effect under the control of higher frequency electromagnetic signals will seriously affect the construction efficiency of the space electric field applied in the liquid crystal material, thereby significantly reducing the light control ability of the device

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