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Calculation of Longitudinal Aberrations in Decentered Optical System with Non-symmetrical Elements

비대칭 오차요인이 있는 편심 광학계에서의 종수차 계산

  • Ryu, Jae-Myung (R&D Team, Digital Imaging Business, Samsung Electronics Co., LTD.) ;
  • Jo, Jae-Heung (Department of Applied Optics and Electromagnetics, Hannam University) ;
  • Kang, Geon-Mo (R&D Team, Digital Imaging Business, Samsung Electronics Co., LTD.) ;
  • Lee, Hae-Jin (R&D Team, Digital Imaging Business, Samsung Electronics Co., LTD.) ;
  • Yoneyama, Suji (R&D Team, Digital Imaging Business, Samsung Electronics Co., LTD.)
  • 류재명 (삼성전자(주) 디지털이미징사업부 렌즈개발그룹) ;
  • 조재흥 (한남대학교 이과대학 광.전자물리학과) ;
  • 강건모 (삼성전자(주) 디지털이미징사업부 렌즈개발그룹) ;
  • 이해진 (삼성전자(주) 디지털이미징사업부 렌즈개발그룹) ;
  • 요네야마 슈지 (삼성전자(주) 디지털이미징사업부 렌즈개발그룹)
  • Received : 2010.05.31
  • Accepted : 2010.08.10
  • Published : 2010.08.25

Abstract

When the optical image stabilization is implemented by moving one of the lens groups in a zoom system, decentration should be considered in the optical design process. Although it is partially possible to calibrate optical performances in an optical system with non-symmetrical elements by using a lot of commercial software, the results of calibrating longitudinal aberrations have some calibration errors because of the lack of precise consideration of decentered optical systems. In particular, the amount of distortion in paraxial ray tracing is different from the experimental value because paraxial ray tracing in the optical system is not useful. In this paper, in order to solve this problem being from various commercial lens design software, the set of equations of paraxial ray tracing in a zoom lens system with the non-symmetrical elements like decentration or tilt are theoretically induced. Then, the methods to calibrate the equations of longitudinal aberrations by using these equations in a non-symmetrical optical system are presented. The method of calibrating longitudinal aberrations can in practice be used to correct hand shaking effects in a zoom lens system.

Acknowledgement

Supported by : 한남대학교

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