Liquid crystal laser phased array detection guidance system

Through the liquid crystal phased array optical antenna and transmission optical system, the problems of large volume, heavy weight, high power consumption and low direction accuracy caused by mechanical rotation in the existing laser detection and guidance system are solved, and high-precision and low power consumption laser beam control and multi-beam generation are achieved.

CN119716796APending Publication Date: 2025-03-28GUIZHOU AEROSPACE ELECTRONICS TECH CO LTD
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Patent Information

Application Number
CN202411790935.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-06
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing organic sweeping laser detection and guidance system relies on mechanical rotating components, resulting in large volume, heavy weight, high power consumption, low direction accuracy, and cannot achieve agile beam direction and multi-beam generation at random positions.

Method used

The liquid crystal phased array optical antenna is adopted to realize the shape and direction control of the laser beam under the voltage of the beam controller through multiple liquid crystal phase shift units. Combined with a transmission optical system and a four-quadrant APD photodetector, the detection and processing of laser echo signals are realized.

Benefits of technology

It realizes laser beam scanning and control without inertia, vibration and wear, with high direction accuracy, and can realize agile beam direction and multi-beam generation at random positions, reducing the power consumption, weight and volume of the guidance system, suitable for miniaturization and high integration.

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Abstract

The invention provides a liquid crystal laser phased array detection guidance system, which comprises a liquid crystal phased array optical antenna, an optical assembly, a detection receiving assembly, a signal processor, a beam controller and a secondary power supply, the liquid crystal phased array optical antenna controls the phase of near-field light, and beam pointing control is formed in a far-field coherent superposition mode. The optical assembly is matched with the liquid crystal phased array optical antenna, and a dispersion light spot is formed on the detection receiving assembly; the detection receiving assembly performs photoelectric conversion on the laser echo signal; the signal processor processes the signal, generates a beam control code and outputs a measurement target line-of-sight angle; the two-dimensional liquid crystal optical phased array is adopted to achieve laser beam scanning and control, inertia, vibration and abrasion are avoided, the pointing precision is high, and beam agile pointing at random positions and multi-beam generation are achieved; miniaturization and high integration are realized; the liquid crystal optical phased-array antenna is made of liquid crystal materials, and large-scale low-cost production can be achieved.
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