Alignment technology for standard scatter plate calibration system used in calibrating forward scattering visibility meter
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1. Changchun University of Science and Technology, Changchun 130022, China; 2. Key Laboratory of Optical Control and Optical Information Transmission Technology Department of Education, Changchun 130022, China; 3. Optical Measurement and Control Instrumentation, Jilin Province Engineering Research Center, Changchun 130022, China; 4. Aviation University of Air Force, Changchun 130022, China

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TH765.8+3

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    Abstract:

    In order to realize rapid and high precision calibration of the standard scattering plate for visibility meter calibration, based on the calibration principle of standard scatter plate used in calibrating forward scattering visibility meter, we proposed a new type of calibration system for standard scatter plate used in calibrating forward scattering visibility meter. The main research focus was the alignment technology for the calibration system. According to composition and working principle of the calibration system, we established the alignment optical model. We also proposed the alignment scheme consist of the alignment of relative location between parabolic reflection mirror and panoramic imaging energy detection system and relative location between parabolic reflection mirror and low reflectivity spherical screen system. We established extremity error calculation model. In the situation of 45°pitching angle of incident light, we calculated the maximum alignment error of translation error and tilt error between parabolic reflection mirror and low reflectivity spherical screen system are 3.18°and 0.847° respectively, and the maximum alignment error of translation error and tilt error between parabolic reflection mirror and panoramic imaging energy detection system are both 2.14 pixels. The experimental results proved that the maximum angle detection error of the alignment standard scatter plate calibration system used in calibrating forward scattering visibility meter is 0.795°, which is less than 1° and satisfied the requirements of angle detection error of the calibration system.

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History
  • Received:
  • Revised:
  • Adopted:
  • Online: July 10,2017
  • Published: