Short coherent illumination and polarization combined underwater long-distance optical imaging device and method

A technology of optical imaging and imaging method, applied in optics, optical components, image communication, etc., can solve problems such as limited working distance, and achieve the effects of suppressing excessive noise, suppressing backscattering, and low cost

Active Publication Date: 2020-05-08
QINGDAO TECHNOLOGICAL UNIVERSITY
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Problems solved by technology

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

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  • Short coherent illumination and polarization combined underwater long-distance optical imaging device and method
  • Short coherent illumination and polarization combined underwater long-distance optical imaging device and method
  • Short coherent illumination and polarization combined underwater long-distance optical imaging device and method

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[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 a short coherent illumination and polarization combined underwater long-distance optical imaging device and method. The system comprises a short coherent laser, an optical imaging system, a polarizer and an analyzer, wherein a polarizer is arranged at the image side end of the short coherent laser, the analyzer is arranged at the object side end of the optical imaging system, a laser emitted by the short coherent laser enters an imaging target through the polarizer, the imaging target is arranged in a water body environment, and a reflected light 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 ...

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Application Information

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Patent Type & Authority Applications(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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