Earticle

초록

영어

In order to measure the dispersion coefficient of glass and other transparent material rapidly and accurately, the paper studies the dispersion coefficient measurement system based on CCD imaging automatic alignment technology. On the basis of consideration of the air refractive index impacting on the measurement accuracy of dispersion coefficient, this paper rebuilds the mathematical model by the traditional dispersion coefficient measurement formula. Using the measuring angle technology of precision grating, the paper realizes the digital measurement of deflection angle of refracted ray. Sub-pixel edge detection algorithm is adopted to realize the automatic alignment of double line to single line, which has reduced artificial error of the dispersion coefficient in the measurement process. Finally, the paper combined the multichannel small collimator designed technology and the modern control technology to achieve the high precision measurement of refractive index. Demarcating the measurement system by known dispersion coefficient of optical glass, testing results and error of standard is less than ±2.3×10-6 absolutely.

목차

Abstract
 1. Introduction
 2. The New Dispersion Coefficient Measurement Model
 3. Dispersion Coefficient Measurement System Composition and Working Principle based on CCD Imaging Automatic Alignment
 4. CCD Imaging and Image Process Algorithm
 5. The Measurement Results
 6. Analysis of Measuring Precision
 7. Conclusion
 References

키워드

저자

• Cao Miao [ Changchun University of Science and Technology, Changchun, 130022, China ]
• Yao Qinghua [ Changchun University of Technology, Changchun, 130012, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Signal Processing, Image Processing and Pattern Recognition

• 간기

  격월간

• pISSN

  2005-4254

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605