Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Large Aspheric Optics and Its Applications

대구경 비구면 광학기술과 응용

  • Lee, Yun-Woo (Center for Space Optics, Division of Industrial Metrology, Korea Research Institute of Standards and Science) ;
  • Moon, Il Kweon (Center for Space Optics, Division of Industrial Metrology, Korea Research Institute of Standards and Science) ;
  • Kihm, Hagyong (Center for Space Optics, Division of Industrial Metrology, Korea Research Institute of Standards and Science) ;
  • Yang, Ho-Soon (Center for Space Optics, Division of Industrial Metrology, Korea Research Institute of Standards and Science)
  • 이윤우 (한국표준과학연구원 산업측정표준본부 우주광학센터) ;
  • 문일권 (한국표준과학연구원 산업측정표준본부 우주광학센터) ;
  • 김학용 (한국표준과학연구원 산업측정표준본부 우주광학센터) ;
  • 양호순 (한국표준과학연구원 산업측정표준본부 우주광학센터)
  • Received : 2013.05.16
  • Accepted : 2013.06.07
  • Published : 2013.06.25
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Abstract

A large aspheric mirror is a key component for large astronomical telescopes and high resolution satellite cameras. Since it is large and has an aspheric form, it is much more difficult to fabricate it compared to the similar size of spherical mirror. Especially, the opto-mechanical design and analysis is critical to reduce the deformation of mirror surface due to the external forces such as gravity or temperature change, as the mirror size is larger and lightweighting ratio is increased. The design requirements for the mirror are different depending on the particular ground and space applications because the environmental conditions are changed. In this paper, we explain the opto-mechanical design and analysis for ground and space applications that are among the most difficult to achieve among several technologies related to development of the large aspheric mirror.

대구경 비구면 거울은 대형 천체 망원경이나 고해상도 위성 카메라 등에 사용하는 핵심부품이다. 일반적인 디지털 카메라와 비교하면 매우 크므로 설계 및 제작이 같은 크기의 구면거울보다 훨씬 어렵다. 특히 경량화가 많이 될수록 중력이나 온도변화와 같은 외부의 힘에 의한 변형이 쉽게 발생하기 때문에 이러한 효과를 줄여주는 광기계 설계 및 해석이 더욱 중요해진다. 지상용과 우주용은 사용 환경에 차이가 있어서 설계 요구조건이 달라지고 이에 따라 지지구조물이나 반사경의 경량화 모양 등에 많은 차이가 있다. 본 논문에서는 대구경 비구면 광학기술가운데 가장 어려운 광기계 설계에 관하여 지상용과 우주용으로 나누어 자세히 설명하고자 한다.

Keywords

References

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