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Underwater long-distance optical imaging device and method combining short coherent illumination and polarization

An imaging method and optical imaging technology, applied in optics, optical components, image communication, etc., can solve problems such as limited operating distance, and achieve the effect of suppressing excessive noise, improving imaging quality, and low cost

Active Publication Date: 2022-04-22
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Claims
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Problems solved by technology

Although staring imaging equipment has the advantage of low cost, the working distance is limited

Method used

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  • Underwater long-distance optical imaging device and method combining short coherent illumination and polarization
  • Underwater long-distance optical imaging device and method combining short coherent illumination and polarization
  • Underwater long-distance optical imaging device and method combining short coherent illumination and polarization

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Embodiment Construction

[0033] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0034] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof. For the convenience of description, if the words "up", "down", "left" and "right" appear in the present disclosure...

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Abstract

The invention discloses an underwater long-distance optical imaging device and method combining short-coherent illumination and polarization, including a short-coherent laser, an optical imaging system, a polarizer and an analyzer, and polarizers are set at the image side of the short-coherent laser An analyzer is installed at the object side of the optical imaging system. The laser light emitted by the short coherent laser is incident on the imaging target through the polarizer. The imaging target is placed in the water body environment, and the reflected beam of the imaging target is transmitted to the optical imaging system through the analyzer.

Description

technical field [0001] The disclosure belongs to the technical field of underwater optical imaging, and in particular relates to an underwater long-distance optical imaging device and method combining short-coherent illumination and polarization. Background technique [0002] Underwater optical imaging is widely used in offshore oil drilling, underwater search and rescue, marine environment monitoring and other fields due to its intuitive detection target and high imaging resolution. However, due to the strong backscattering and attenuation of optical imaging, the signal-to-noise ratio of the image is low, which seriously affects the imaging quality and limits the imaging distance. Underwater scatter includes forward scatter and back scatter. Among them, forward scattering only causes uneven illumination on the surface of the imaging target. In actual engineering, it does not affect the recognition of the target image, and increasing the image integration time or averaging ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B15/02G02B27/28H04N5/225
CPCG03B15/02G02B27/28H04N23/56
Inventor 邵晶张若兰赵斌张季丰张蒙杨智辉罗华旭王珺璇王建坤刘玉健韩素立孙树峰韩亮亮
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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