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Underwater imaging device for annular laser lighting

A laser lighting and imaging device technology, which is applied to lighting devices, components of lighting devices, lighting and heating equipment, etc., can solve the problems of complex operation, high cost, and long imaging time, and achieve small size, low device cost, The effect of improving image quality

Inactive Publication Date: 2011-04-06
OCEAN UNIV OF CHINA
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

General laser lighting combined with range gating, laser line scanning and other technical means can effectively reduce the impact of backscattering. However, the range gating method is costly, complicated to operate, and the imaging time of laser line scanning is long. Effective correction is required between

Method used

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  • Underwater imaging device for annular laser lighting
  • Underwater imaging device for annular laser lighting
  • Underwater imaging device for annular laser lighting

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Embodiment Construction

[0013] Such as figure 1 , the present invention includes the outer housing 1 including the optical window 9, the illumination optical path device composed of the laser 2, the beam expander 3, the front lens 5, the rear lens 6 and the total reflection mirror 7 in the outer housing 1, the zoom lens 10 and The receiving detection device that video camera 11 is formed, and electronic control module 12 are characterized in that also comprise a ring-shaped total reflection mirror 8 that is positioned at before zoom lens 10, coaxial with zoom lens 10 and video camera 11, and 45 degree places, and Between the beam expander 3 and the front lens 5 is provided a beam conversion device 4 for changing the Gaussian beam emitted by the laser 2 into a circular beam.

[0014] Such as figure 2 As shown, the light beam conversion device 4 is composed of two identical glass cones 13, 14, the cone angles of the two glass cones 13, 14 are between 60° and 120°, and the cone tips are opposite and e...

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Abstract

The invention relates to an underwater imaging device for annular laser lighting, comprising an optical window, an shell, a lighting optical device, a receiving and detecting device and an electronic control module, wherein the light optical device composed of a laser, a beam expander, a front lens, a rear lens and an all-trans lens is arranged in the shell; and the receiving and detecting device is composed of a zoom lens and a camera. The imaging device is characterized by comprising an annular all-trans lens and a beam-transforming device, wherein the annular all-trans lens is arranged in front of the zoom lens, is coaxial with the zoom lens and the camera, and is placed at an angle of 45 degrees; and the beam-transforming device is arranged between the beam expander and the front lens and causes Gaussian beam sent by the laser to be transformed into annular beams. The imaging device of the invention has high imaging quality, can acquire clearer images under the condition of being far away from turbid body of water, is a novel underwater imaging device for underwater detecting operation, and plays an importation role in ocean detection in our country.

Description

technical field [0001] The invention belongs to the technical field of underwater imaging, and in particular relates to an underwater imaging device for ring laser illumination. Background technique [0002] Underwater imaging has extensive and important application value in underwater target discovery, sea surface material detection and marine geographic engineering, and is being paid more and more attention by researchers from all over the world. For underwater imaging, backscattering is an important reason that affects the imaging quality, and the influence of backscattering in turbid water becomes more obvious. In the usual underwater imaging technology, halogen lamps are used as the lighting source, which not only consumes a lot of power, but also the imaging effect is seriously affected by water scattering, and the imaging effect is poor in the case of turbid water. The laser has high brightness and good directionality, and it is a lighting source that has attracted m...

Claims

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Application Information

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IPC IPC(8): G03B15/05F21V13/00
Inventor 郭金家刘智深
Owner OCEAN UNIV OF CHINA
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