An underwater laser line scan digital imaging system

A digital imaging system and underwater laser technology, applied in the radio wave measurement system, electromagnetic wave re-radiation, utilization of re-radiation, etc., can solve the problems of shortening the observation and imaging distance and the degradation of laser imaging quality, and achieve the purpose of expanding the camera distance, Improve optical transmission energy and enhance the effect of receiving signals

Active Publication Date: 2016-02-10
NANJING HEHAI TECH
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Problems solved by technology

However, none of the above-mentioned systems and devices can effectively solve the effect of laser beam backscattering, which will significantly reduce the quality of laser imaging and significantly shorten the distance of observation and imaging.

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  • An underwater laser line scan digital imaging system

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0032] Such as figure 1 As shown, an underwater laser line scanning digital imaging system includes a host computer module 8, a cylindrical pressure-resistant housing 9 and a laser module 1 installed therein, an optical electromechanical scanning module, and a digital camera module. The camera module is respectively connected with the host computer module 8 through the RS232 communication port; wherein:

[0033] The laser module 1 includes a solid-state frequency-doubled laser, an optical focusing system, and a laser control system; wherein:

[0034] The solid-state frequency doubling laser is used as a light source, including a frequency doubling crystal, and the frequency of the laser is doubled after passing through the frequency doubling crystal;

[0035] The optical focusing system is used to focus the laser beam emitted by the solid-state f...

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Abstract

The invention discloses an underwater laser line scanning digital imaging system which comprises an upper computer module (8), a cylindrical pressure resistant shell (9), a laser module (1), an optical-mechanical-electrical scanning module and a digitization camera shooting module, wherein the laser module (1), the optical-mechanical-electrical scanning module and the digitization camera shooting module are installed inside the shell (9). The laser module (1) comprises a solid-state frequency doubling laser device, an optical focusing system and a laser control system. The optical-mechanical-electrical scanning module comprises an input reflecting mirror (2), an optical subsystem (3) and an output reflecting mirror (4), wherein the optical subsystem (3) comprises an optical trigger, a motor and a rotary shaft driven by the motor. The digitization camera shooting module comprises an incident hole (5), a receiving machine (6), a low-noise pre-amplifier and a video processing system (7). The upper computer module (8) comprises a keyboard, a mouse and a video monitor. According to the underwater laser line scanning digital imaging system, back scattering influences in absorption and scanning water space can be reduced to the maximum degree, and a high-resolution image can be provided.

Description

technical field [0001] The invention relates to an underwater laser imaging system, in particular to an underwater laser line scanning digital imaging system. Background technique [0002] In recent years, underwater photoelectric imaging detection technology is being paid more and more attention by researchers from various countries. It can be used to detect fast-moving targets, and it can also be used for lifesaving, salvage and resource development. However, due to the scattering and absorption of light waves by suspended particles in seawater and water molecules, the attenuation of the laser beam in seawater is quite fast, and the attenuation degree is exponentially related to the imaging distance, resulting in defects such as large image noise and poor imaging quality. [0003] Chinese patent application 201310071635.6 discloses "a detection and imaging system based on laser scanning". The system is characterized by using laser light as the light source to collect and i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/89
CPCG01S17/89
Inventor 张玉全郑源朱延涛娄保东杨春霞陈小翠刘惠文姜镐张琪王洪亮陆梦恬
Owner NANJING HEHAI TECH
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