Laser illumination distance gating imaging device

A laser lighting and imaging device technology, applied in the direction of lasers, measuring devices, laser components, etc., can solve problems such as limited operating distance, inability to obtain image information, blindness, etc., and achieve the effect of strong anti-electromagnetic interference

Inactive Publication Date: 2009-12-30
NO 717 INST CHINA MARINE HEAVY IND GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main deficiency of the CCD camera is: in the case of low ambient illumination and poor visibility, the working distance is limited; the main deficiency of the infrared thermal phase instrument is: when the temperature difference between the target and the background is small, its resolution and working distance are sharply reduced. In addition, when the target is hidden behind camouflage nets, smoke screens, woods and other targets, the CCD camera and thermal imaging camera cannot obtain the image information of...

Method used

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  • Laser illumination distance gating imaging device
  • Laser illumination distance gating imaging device
  • Laser illumination distance gating imaging device

Examples

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Embodiment 1

[0033] Such as figure 1 , image 3 , Figure 4 Shown, a kind of laser illumination distance gating imaging device, it is made up of laser device 1, near-infrared camera 5, synchronous control unit 4, receiving telescope 6, image signal processor 7, central processing unit 8 and image display 9; The laser 1 is a pulsed eye-safe laser with an output wavelength of 1.5 μm to 1.6 μm, and the wavelength of this embodiment is 1.57 μm; the synchronization control unit is composed of a photodiode 18 , a timing unit 19 and a range gate shutter 20 . Laser 1 is a pulsed solid-state laser. The laser 1 has a resonant cavity; the components included in the resonant cavity are sequentially in the order of light entering: total reflection mirror 10, electro-optic crystal 11, 1 / 4 wave plate 12, polarizer 13, Ce:Nd:YAG laser Rod 14, OPO input mirror 15, KTP crystal 16, OPO output mirror 17; wherein total mirror 10, OPO output mirror 17 form a 1064nm laser resonator; OPO input mirror 15, OPO o...

Embodiment 2

[0045] The difference from the above-mentioned embodiment 1 is that the laser 1 is an erbium glass laser that directly outputs eye-safe laser with an output wavelength of 1.54 μm, and is a Q-switched laser; the near-infrared camera 5 uses a HgCdTe near-infrared camera.

[0046] A laser output wavelength of 1.6 μm is yet another example.

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Abstract

The invention relates to a laser illumination distance gating imaging device, belonging to the technical field of laser imaging and comprising a laser, near infrared camera, a synchronous control unit, a receiving telescope, an image signal processor, a central processing unit, an image monitor and a synchronous control unit; the laser is a laser outputting human eyes safe laser with output wavelength being 1.5mu m-1.6mu m; and the synchronous control unit comprises a photodiode, a timing unit and a distance gating shutter. The invention has the main characteristics of high peak power, relative safe for human eyes, high conversion efficiency and high sensitiveness.

Description

technical field [0001] The invention relates to a laser illumination distance gating imaging device, which belongs to the technical field of laser imaging, and is suitable for use under the conditions of eliminating atmospheric backscattering and obtaining target image information under low illumination and complex background conditions, and is especially widely used in photoelectric In reconnaissance, surveillance, tracking and other equipment. Background technique [0002] The image information of the target is one of the important information that reconnaissance, surveillance, and tracking equipment need to obtain. There are two types of devices for obtaining this important information in the prior art: [0003] One category is CCD cameras and infrared thermal imaging cameras. It obtains the image information of the target by detecting the visible light and infrared radiation of the target. It has a long range and passive detection. Therefore, it has good concealment an...

Claims

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Application Information

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IPC IPC(8): G01S17/89H04N5/33H01S3/16H01S3/082H01S3/115H01S3/11
Inventor 孙峰王寿增张红波席文强张鑫高凡
Owner NO 717 INST CHINA MARINE HEAVY IND GRP
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