한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제25권2호
  • /
  • Pages.43-48
  • /
  • 2008
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  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

배율 타원 근사법을 실린더 렌즈의 굴절력 측정

Measurement of the Power of a Cylindrical Lens with the Magnification Ellipse Fitting Method

  • 고우석 (한국과학기술연구원 기계공학과) ;
  • 예상헌 (한국과학기술연구원 기계공학과) ;
  • 곽윤근 (한국과학기술연구원 기계공학과) ;
  • 김수현 (한국과학기술연구원 기계공학과)
  • 발행 : 2008.02.01
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초록

This paper proposes a new method for measuring the power of spherical and cylindrical lens with 6 points light source, which is composed of a LED and six holes, and magnification ellipse fitting algorithm. Each measured diagonal length of 6 points light source is determined by the target lens power. After finding the center position of each light point with threshold method, 3 axis-diagonal lengths were calculated. The long axis and short axis power of cylindrical lens can be calculated by using magnification ellipse fitting algorithm with the magnification relationships between the initial diagonal lengths and the measured diagonal lengths changed by lens power.

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참고문헌

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