Multispectral stripe tube three-dimensional lidar imaging apparatus

A technology of three-dimensional imaging and laser radar, which is applied in the direction of measuring devices, electromagnetic wave re-radiation, and utilization of re-radiation, can solve the problems of difficult detection by sensors and weak signals, so as to improve accuracy, expand the scope of application, and increase the abundance of information sexual effect

Inactive Publication Date: 2011-11-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the single-wavelength detection system is weak for a specific environment or

Method used

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  • Multispectral stripe tube three-dimensional lidar imaging apparatus
  • Multispectral stripe tube three-dimensional lidar imaging apparatus

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Embodiment

[0016] A multi-spectral stripe tube lidar three-dimensional imaging device, such as figure 1 As shown, the device includes a multi-wavelength laser 1, a beam expander prism 2, a receiving telescope 3, a diffraction grating beam splitter 4, a convex lens 5, a first filter 6, a second filter 7, a third filter 8, Streak tube 9, coupling light cone 10, CCD camera 11 and target 12;

[0017] Described multi-wavelength laser 1 is Nd:YAG multi-wavelength laser, emits the mixed laser beam of three kinds of wavelengths, and wavelength is respectively 1064nm, 532nm and 355nm;

[0018] The first slit, the second slit and the third slit are attached to the cathode of the striped tube 9, the first slit is coupled with the first optical filter 6, and the second slit is coupled with the second slit. The optical filter 7 and the third slit are coupled to the third optical filter 8, and the position of the three slits is adjusted, and the three wavelengths emitted by the multi-wavelength laser...

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Abstract

The invention, which belongs to the photoelectric imaging technology field, relates to a multispectral stripe tube three-dimensional lidar imaging apparatus. The apparatus comprises: a multi-wavelength laser, a beam expanding prism, a reception telescope, a diffraction grating spectroscope, a convex lens, optical filters, a stripe tube, a coupling light cone, and a CCD camera. A mixing multi-wavelength laser beam that is emitted by the multi-wavelength laser passes through the beam expanding prism and then is shot at an object and is reflected; the reflected laser beam is received by the reception telescope and is gathered to the diffraction grating spectroscope; and then the gathered laser beam passes through the convex lens and is focused on the optical filters; the focused laser beam bombards a photoelectric cathode of the stripe tube to generate a plurality of electron beams though a slit and the plurality of electron beams bombard a fluorescent screen in the stripe tube; and then a multispectral strip image is coupled through the coupling light cone and is imaged on the CCD camera. According to the invention, a multi-spectral detection technology is integrated into a stripe tube lidar imaging apparatus, so that accuracy of object imaging and richness of information are improved; and a specific wavelength can detect a weak signal; therefore, an application arrange of the stripe tube lidar imaging detection apparatus is expanded.

Description

technical field [0001] The invention relates to a three-dimensional imaging device of a multi-spectral stripe tube laser radar, which belongs to the technical field of photoelectric imaging. Background technique [0002] The general passive target detection system can only obtain the grayscale information of the target, which is difficult to meet the detection of camouflaged targets or the identification of target distance information in future warfare. Lidar 3D imaging technology is a research hotspot in the world in recent years. It is the product of the combination of laser technology and radar technology. It has broad development prospects in military, aerospace and other fields. It not only answers the question of whether the target is detected, the distance, but also solves the problem of what the target is and how it is. The traditional scanning laser imaging radar system not only loses portability because of the extra mechanical scanning mechanism, but also needs to ...

Claims

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Application Information

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IPC IPC(8): G01S17/89
Inventor 韩绍坤马晨宁赵文
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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