Adaptive laser defense system with compact structure

Abstract

The invention provides an adaptive laser defense system with a compact structure. The adaptive laser defense system comprises a primary mirror, a deformable focusing secondary mirror, a tilt mirror, abeam splitter, a Hartmann sensor, a laser collimation optical system, a laser, an illumination system and a controller. The deformable focusing secondary mirror in the system mainly has the functionsof high-order aberration correction and large-range defocus correction. The Hartmann sensor is used for detecting wave-front distortion, and a measurement result is used for a tilt closed loop and defocus high-order aberration correction. According to the invention, the Hartmann sensor is adopted to replace a tilt tracking sensor to detect wave-front aberration and is matched with the deformablefocusing secondary mirror for correction, so that the influence of atmospheric turbulence on the shape of a light spot is eliminated, the power density of the light spot is improved, and the active defense capability is improved. Compared with an existing adaptive laser defense system, the optical system has a more compact structure, smaller reflecting surface and lower energy loss through the combination of a focusing secondary mirror and a deformable mirror.

Description

technical field [0001] The invention relates to the technical field of light beam control in optical instruments, in particular to a compact self-adaptive laser defense system. Background technique [0002] UAV is an unmanned aircraft controlled by radio remote control equipment and self-contained program control device. In the 1990s, Western countries fully realized the role of drones in warfare, and adopted various new technologies to vigorously develop drones. Today, UAVs already have multiple functions such as reconnaissance, bombing, and interference. With the continuous emergence of military and civilian drones, anti-drone awareness has been continuously improved due to the needs of national security and homeland security, and countries have already carried out research work in this area. . However, using traditional means to fight against UAVs not only has a low success rate, but also may cause collateral damage to the ground and the crowd, and laser defense is one...

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Problems solved by technology

[0004] Patent "a short-range laser defense system" (201721280043.5), "UAV-borne laser weapon anti-drone system" (201811097389.0), "laser defense system and high-altitude airship" (201710296422.1), patent "a high-precision Dual-Wavelength Intense Laser Defense System" (201820945635.2) all adopted laser defense, but none of them adopted deformable mirror correction to improve spot power density

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