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Underwater imaging laser lighting light spot homogenization adjusting device

A laser lighting and adjustment device technology, applied in optics, optical components, instruments, etc., can solve the problems of affecting the imaging effect of underwater cameras, uneven energy distribution, and inability to use directly, achieving good adjustment stability and convenient operation , reduce interference fringes, and reduce speckle effects

Active Publication Date: 2018-06-15
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

The light spot emitted directly by the laser obeys the Gaussian distribution, the energy distribution is uneven, and it presents the characteristics of high center energy and low edge energy. Using this light source for illumination will affect the imaging effect of the underwater camera, so it cannot be used directly, and the laser needs to be emitted directly The spot is shaped into a flat-top beam, so that the energy of the entire spot is evenly distributed

Method used

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  • Underwater imaging laser lighting light spot homogenization adjusting device
  • Underwater imaging laser lighting light spot homogenization adjusting device
  • Underwater imaging laser lighting light spot homogenization adjusting device

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0037] combine figure 1 and figure 2 , it can be seen that the adjustment device of the present invention mainly includes a lens barrel 1, a first fixed block 3 arranged in the lens barrel 1 and coaxial with the lens barrel 1, a second fixed block 6, a first ring 4 and a second ring Ring 8;

[0038] From figure 1 It can be seen that the inner wall of the lens barrel 1 is provided with holes, the outer wall on the left side of the first fixed block 3 is flat with the outer wall on the right side, and fits with the hole plane in the lens barrel 1, and the distance between the upper and lower arc surfaces of the hole groove is greater than that of the first fixed block 3. The distance between the upper and lower arc surfaces in the fixed block 3;

[0039] The center of the first fixed block 3 has an elliptical through hole, and the elliptical...

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Abstract

The invention belongs to the technical field of optical lighting and imaging, and particularly relates to an underwater imaging laser lighting light spot homogenization adjusting device comprising a lens cone, and a first fixing block, a second fixing block, a first ring and a second ring which are arranged in the lens cone and coaxial with the lens cone. The first fixing block and the second fixing block are used for fixing the first ring and the second ring. The first ring and the second ring are used for fixing two micro-lenses. With application of mechanical structure design, micro-adjustment of relative axial distance error, relative rotating error and relative translation error (plane movement of X and Y directions) between two groups of micro-lenses can be effectively realized by using the mode of four-degree-of-freedom independent adjustment so that the optical axes of the two groups micro-lens arrays are ensured to be strictly aligned, the adjustment accuracy is high, the adjustment method is simple and the light spot quality is great.

Description

technical field [0001] The invention belongs to the technical field of optical illumination and imaging, and in particular relates to a device for homogenizing the output beam of an illumination laser in underwater imaging by using a double-column microlens array adjustment mechanism. Background technique [0002] In underwater imaging, the water body has strong absorption and scattering of natural light, and the energy attenuation of light is large when natural light is used as the lighting source, and the transmission distance is short. Therefore, in underwater imaging camera systems, laser light sources are often used for illumination. The light spot emitted directly by the laser obeys the Gaussian distribution, the energy distribution is uneven, and it presents the characteristics of high center energy and low edge energy. Using this light source for illumination will affect the imaging effect of the underwater camera, so it cannot be used directly, and the laser needs t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09
CPCG02B27/0961Y02A90/30
Inventor 李学龙赵龙郝歌扬吴国俊焉兆超
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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