Laser scattering-based optical-fiber prefabricated rod defect detection method

An optical fiber preform and laser scattering technology, applied in the field of optical detection, can solve the problems of low detection efficiency, reliability and consistency of detection results, etc., and achieve the effect of high precision and high efficiency

Inactive Publication Date: 2014-04-02
ZHEJIANG NORMAL UNIVERSITY
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Problems solved by technology

[0004] At present, the detection of optical fiber preform defects mainly adopts manual visual inspection and manual recording under light irradiation. This method needs to rely on experienced workers to operate, the detection efficiency is very low, and the reliability and consistency of the detection results are relatively low.

Method used

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  • Laser scattering-based optical-fiber prefabricated rod defect detection method
  • Laser scattering-based optical-fiber prefabricated rod defect detection method

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Embodiment Construction

[0014] Such as figure 1 As shown, the optical fiber preform defect detection device based on laser scattering includes an optical fiber preform to be tested 1, a one-dimensional lifting device 2, a matching liquid 3, a rectangular container 4, a two-dimensional translation stage 5, a camera 6, a connecting camera and a two-dimensional The bracket 7 of the translation platform, the laser 8 outputting the linear beam, the bracket 9 connecting the laser and the two-dimensional translation platform, and the computer 10 . The optical fiber preform 1 to be tested is fixed on the one-dimensional lifting device 2; the optical fiber preform 1 to be tested is completely immersed in the matching liquid 3; the matching liquid 3 is installed in the rectangular container 4; the camera 6 is fixed on the two-dimensional translation platform through the bracket 7 5; the laser 8 output by the linear beam is fixed on the two-dimensional translation platform 5 through the bracket 9; the linear be...

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Abstract

The invention belongs to the technical field of optical detection, and particularly relates to a laser scattering-based optical-fiber prefabricated rod defect detection method. A laser and a camera are fixed on a two-dimensional displacement platform, an optical-fiber prefabricated rod is immersed in matching liquid, and linear beams outputted by a laser vertically shine on the optical-fiber prefabricated rod; the two-dimensional displacement platform is adjusted through a computer, so that the linear beams can scan the entire optical-fiber prefabricated rod; a picture is obtained by the computer through the camera, and defects and the position of each defect of the optical-fiber prefabricated rod are judged according to the laser scattering spots. By adopting the method, the weaknesses of the manual observation such as low efficiency, low reliability and poor consistency can be eliminated, and the advantages such as high efficiency, high precision and full automation can be realized.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and in particular relates to a method for detecting defects of optical fiber preform rods based on laser light scattering. Background technique [0002] Optical detection technology has important applications in scientific research, industry, medical treatment, large-scale infrastructure construction, aerospace, national defense and military and other fields. In recent years, the progress of laser, optical imaging and computer technology has promoted the further development of optical detection technology and expanded the scope of application. [0003] The invention of optical fiber has brought about revolutionary changes in the field of communication and greatly changed people's life and production methods. Optical fiber preform is the basic product with the most core technology in the optical fiber production process, and its quality directly affects the quality of optical fiber. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88
Inventor 陈达如骆淑君马晓伟
Owner ZHEJIANG NORMAL UNIVERSITY
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