Volume 4 Issue 3
Jun.  2011
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ZHANG Yong-ling. Calculation of lens parameters for lensmeters based on motor compensation[J]. Chinese Optics, 2011, 4(3): 271-276.
Citation: ZHANG Yong-ling. Calculation of lens parameters for lensmeters based on motor compensation[J]. Chinese Optics, 2011, 4(3): 271-276.

Calculation of lens parameters for lensmeters based on motor compensation

  • Received Date: 12 Feb 2011
  • Rev Recd Date: 23 Apr 2011
  • Publish Date: 25 Jun 2011
  • Automatic lensmeter is an instrument for measuring optical parameters of glasses. For several universal problems on the small measurement range and poor accuracy of the automatic lensmeter, this paper developeds a instrument. It uses motor compensation principle to adjust the linear motion position of a partition board to implement the compensation, and changes the relation of the images and the object to achieve the focal power measurement accuracy and enlarge the measuring range. When a lens is placed in the optical system until the end of the adjustment process, the electrical components will receive the image and analyze the averaged calculation, which can get the parameters of the lens under test. After a system demonstration and testing, the prototype is used to successful measure some typical lenses. The results show that all lenses are in the range of error within 0.02 m-1. The measurement results fully meet the requirements of national metrological verification test.

     

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