Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Study of the Analysis Method for the Aspherical Tolerance of a Korsch Telescope Using a Q Polynomial

Q-Polynomial을 이용한 Korsch 망원경의 비구면 공차 분석 방법 연구

  • Jun, Won-Kyoun (Department of Nano-optical Engineering, Korea Polytechnic University) ;
  • Lee, Han-Yul (Department of Nano-optical Engineering, Korea Polytechnic University) ;
  • Lee, Sang-min (Department of Optics and Photonics, Yonsei University) ;
  • Kim, Ki-hwan (Department of Optics and Photonics, Yonsei University) ;
  • Park, Seung Han (Department of Optics and Photonics, Yonsei University) ;
  • Jung, Mee-Suk (Department of Nano-optical Engineering, Korea Polytechnic University)
  • 전원균 (한국산업기술대학교 나노반도체공학과) ;
  • 이한율 (한국산업기술대학교 나노반도체공학과) ;
  • 이상민 (연세대학교 광과학공학과) ;
  • 김기환 (연세대학교 광과학공학과) ;
  • 박승한 (연세대학교 광과학공학과) ;
  • 정미숙 (한국산업기술대학교 나노반도체공학과)
  • Received : 2020.10.17
  • Accepted : 2020.11.19
  • Published : 2020.12.25
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Abstract

In this paper, we study the analysis method for the aspherical tolerance of a Korsch telescope using a Q polynomial. It is important to analyze the tolerances for evaluating quality in high-precision fabrication of aspherical reflectors for high-resolution satellites. Thus we express the aspheric surface in terms of a Q polynomial in which each coefficient term is composed independently, and analyze the tolerance of a Korsch telescope. We also analyze the tolerance using Zernike fringe sag, which expresses the shape error of an aspherical mirror. By comparing the two results, we confirm that the Q-polynomial method can be used to analyze an aspherical mirror.

본 논문에서는 Q-polynomial을 이용한 Korsch 망원경의 비구면 반사경 공차 분석을 진행하였다. 고해상도 인공위성의 비구면 반사경은 고정밀 제작이 요구되어 품질을 평가하기 위한 공차 분석이 중요하다. 따라서 비구면을 각 계수항들이 독립적인 Q-polynomial로 표현하고 Korsch 망원경 광학계의 공차 분석을 진행하였다. 또한 비구면 반사경에 형상 오차를 Zernike fringe sag로 부여하여 공차 분석하고 두 결과를 비교하여 Q-polynomial으로도 공차 분석할 수 있음을 확인하였다.

Keywords

References

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