Self-adaptive laser far field power density control device

A power density and control device technology, applied in optics, optical components, instruments, etc., can solve problems such as difficult system integration, large volume of beam control system, etc., and achieve high control precision, fast focusing process, and responsive effects

Active Publication Date: 2017-02-15
中国人民解放军陆军炮兵防空兵学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this system is that the beam control system has a large volume and is not easy to system integration.

Method used

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  • Self-adaptive laser far field power density control device
  • Self-adaptive laser far field power density control device
  • Self-adaptive laser far field power density control device

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] Such as figure 1 The laser active rejection system in the illustrated embodiment includes a laser generation and emission device 1 and a far-field precise focusing device, and the laser generation and emission device 1 is connected to an adaptive laser far-field power density control device through an optical fiber 8 The far-field precise focusing device is arranged on the rotating bracket 2; the ranging unit and the video acquisition unit are also arra...

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Abstract

The invention relates to a self-adaptive laser far field power density control device. The device comprises a beam collimating assembly, a focusing assembly with a focusing lens, a fixed concave mirror, a combination lens, a fast mirror and an off-axis paraboloid mirror which is used for emitting laser in parallel, wherein the beam collimating assembly, the focusing assembly with the focusing lens, the fixed concave mirror, the combination lens, the fast mirror and the off-axis paraboloid mirror are sequentially arranged along the laser emitting direction. The combination lens is formed by sequentially gluing a meniscus lens and a plano-convex lens in the laser emitting direction, and the convex surface of the meniscus lens and the plane of the plano-convex lens are close to each other. According to the invention, a single mobile concave mirror is used as an eyepiece group; the fixed concave mirror and the combination lens composed of the meniscus lens and the plano-convex lens form an objective lens group; during a laser focusing process, the position of the objective lens group is fixed, the single mobile concave mirror arranged on a precision rail as the eyepiece group is simply moved; and the optical focusing assembly provided by the invention has the advantages of compact structure, sensitive response and high control accuracy.

Description

technical field [0001] The invention belongs to the technical field of self-adaptive laser beam far-field precise focus control, and in particular relates to an adaptive laser far-field power density control device. Background technique [0002] The far-field focusing of the laser beam generally changes the focal length of the system through the beam control system to maximize the output power of the laser beam to the far-field target. The current control method mainly controls the laser beam through the inverse Galileo telescope system and the inverse Cassegrain system. The inverse Galileo telescope system is composed of convex and concave lenses. By changing the distance between the two lenses, the focal length of the system is controlled to focus the laser beam in the far field. The disadvantage of this system is that with the increase of the far field distance, the focus spot size is too large, the relative intensity of the spot energy is weak, and the focus precision i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/08G02B27/48
CPCG02B26/0825G02B27/48
Inventor 黄勤超朱一旺张罗政徐记伟韩裕生褚凯李小明周浦城姚翎罗晓琳徐瑶葛传文王硕
Owner 中国人民解放军陆军炮兵防空兵学院
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