Infrared beam control chip based on electronically controlled liquid crystal infrared converging planar microlens

Abstract

The invention discloses an infrared beam control chip based on an electric control liquid crystal infrared convergence planar micro lens. The chip comprises an electric control liquid crystal infrared convergence planar micro lens array, wherein the electric control liquid crystal infrared convergence planar micro lens array comprises a liquid crystal material layer, a first liquid crystal initial orientation layer, a first electrical isolation layer, a graphical electrode layer, a first substrate, a first infrared antireflection film, a second liquid crystal initial orientation layer, a second electrical isolation layer, a common electrode layer, a second substrate and a second infrared antireflection film, the first liquid crystal initial orientation layer, the first electrical isolation layer, the graphical electrode layer, the first substrate and the first infrared antireflection film are sequentially arranged on the upper surface of the liquid crystal material layer, the second liquid crystal initial orientation layer, the second electrical isolation layer, the common electrode layer, the second substrate and the second infrared antireflection film are sequentially arranged on the lower surface of the liquid crystal material layer, the common electrode layer is composed of a homogeneous conducting film layer, and the graphical electrode layer is composed of a homogeneous conducting film layer on which round holes or square holes are distributed into an m*n element array. The chip can achieve electric control formation and electric modulation of a micro condensation lattice and electric control homogenization of a far-field infrared transmission beam, can be easily matched and coupled with other infrared optical and photoelectric structures, electronic and mechanical devices and the like, and is good in environmental suitability.

Description

technical field [0001] The invention belongs to the technical field of infrared beam precision measurement and control, and more specifically, relates to an array-based electronically controlled liquid crystal infrared converging plane microlens, which constructs and modulates the infrared micro-concentrating lattice light field and electrically controls homogenization Light control chip for far-field infrared beams. Background technique [0002] So far, based on fixed-profile refractive or diffractive microlens arrays, the technology of obtaining micron-scale homogenized infrared light-concentrating lattice light fields has been applied in many fields, such as infrared high-brightness micro-array reference sources, Infrared photosensitive chip light energy utilization rate microlens enhancement and noise reduction, infrared chip photosensitive field of view arrayed microlens coupling improvement, based on uniform infrared lithography source arranged in an orderly array of m...

AI Technical Summary

Problems solved by technology

[0003] At present, the obvious defects of the technical method of obtaining the infrared micro-concentrating lattice light field based on the refractive or diffractive microlens array with a fixed contour shape include: (1) Due to the invariance of the optical performance of the microlens with a fixed contour, it can only Construct a micro-concentrating lattice light field with a relatively fixed focal length and point spread function, without the ability to adjust the energy state and configuration distribution of the focal spot and the structural size; (2) The distance emitted from the arrayed microlens with a fixed shape The uniformity of the energy state and shape of the field infrared beam is determined by the fixed beam transformation capability of the microlens, and it is not adjustable; It is carried out through mechanical movement between two or even multiple sets of arrayed micro-lenses arranged in cascade, the response is slow, the volume, mass and inertia of the actuator are large, and a relatively complicated drive and control device needs to be configured, and it cannot be executed due to the continuity of mechanical motion. Arbitrary optical state cut-in or rapid jump, it is difficult to flexibly access the infrared optical path or couple with other infrared optical opto-mechanical structures

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