Infrared night vision laser searchlighting machine

An infrared laser and searcher technology, which is applied in semiconductor devices, instruments, optics, etc. of light-emitting elements, can solve the problems of large light source volume, large volume, poor concealment, etc., and achieve good beam collimation and high search power , good practical effect

Inactive Publication Date: 2009-03-11
上海天竹康复科技发展有限公司
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Problems solved by technology

[0003] Active infrared night vision often used infrared light sources such as halogen lamps and Nernst lamps at first. These light sources are large in size, high in power consumption, and poor in concealment, so they are poor in practicability and difficult to promote. They have been phased out
In recent years, there have been many active night v

Method used

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  • Infrared night vision laser searchlighting machine
  • Infrared night vision laser searchlighting machine

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Embodiment Construction

[0012] Principle of the present invention see figure 1 . The laser beam generated by the laser diode is corrected into a quasi-circular beam by the beam compression and shaping unit, and then passes through the beam expansion unit and collimation unit composed of a negative lens group to form a quasi-parallel light to illuminate the target object.

[0013] The present invention will be further described in conjunction with embodiment and accompanying drawing now.

[0014] see figure 2 , the laser diode LD is fixed on the heat sink 1 through a tube base 2. Since the LD generates high heat during operation, the heat must be dissipated through the heat sink to ensure the normal operation of the LD. The beam compression and shaping unit 7 is fixed in front of the LD on the tube base 2; the beam expander lens group 8 is screwed in front of the beam compression and shaping unit 7 through a joint 3, and the collimating lens is fixed by a sleeve 4 The barrel 5 is screwed on the jo...

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Abstract

The invention discloses an infrared night-vision laser searchlighting device, which takes an infrared laser diode (LD) as an active infrared night-vision searchlighting device light source and mainly comprises an optical system which takes the LD as the light source and an LD conduction heat abstractor. The optical system comprises a light beam compressing and light beam reshaping unit combined by an optical fiber and a non-spherical lens assembly for correcting the non-axisymmetry of output beams; a light beam expanding unit consisting of a negative lens assembly to prevent a phenomenon of ionization and an ablation phenomenon generating dispersion dust particles caused by laser beam focusing in a transmission process; and a collimation unit consisting of a coated lens assembly for leading the laser beam to form a collimating searchlighting beam. The invention has the advantages of high searchlighting power, good beam collimation property, small volume, light weight and good practicability and is capable of observing a distant target object 2-3km far away at night.

Description

technical field [0001] The invention relates to an optical search device, in particular to an infrared night vision searcher, in particular to an infrared night vision laser searcher. Background technique [0002] A technology that realizes night vision observation by means of photoelectric imaging devices is called night vision technology. Night vision technology includes two aspects: low-light night vision and infrared night vision. Low-light night vision technology, also known as image intensification technology, is a photoelectric imaging technology that uses night vision goggles with image intensifier tubes to enhance weak targets illuminated by night light for observation. Infrared night vision is divided into: passive and active. Passive infrared night vision technology realizes the observation of the target object by means of the temperature difference or radiation difference of the infrared radiation beam emitted by itself between the background or the various part...

Claims

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Application Information

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IPC IPC(8): G02B27/10G02B27/00H01L33/00F21K7/00F21V29/00F21V8/00F21V5/04F21Y101/02F21K99/00F21V29/503F21Y115/10
Inventor 束继祖
Owner 上海天竹康复科技发展有限公司
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