中国物理B ›› 2011, Vol. 20 ›› Issue (7): 74201-074201.doi: 10.1088/1674-1056/20/7/074201

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Conformal optical system design with a single fixed conic corrector

宋大林, 常军, 王庆丰, 何伍斌, 曹娇   

  1. School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China
  • 收稿日期:2010-10-19 修回日期:2010-12-20 出版日期:2011-07-15 发布日期:2011-07-15

Conformal optical system design with a single fixed conic corrector

Song Da-Lin(宋大林), Chang Jun(常军)†, Wang Qing-Feng(王庆丰), He Wu-Bin(何伍斌), and Cao Jiao(曹娇)   

  1. School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China
  • Received:2010-10-19 Revised:2010-12-20 Online:2011-07-15 Published:2011-07-15

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摘要： A conformal optical system refers to the one whose first optical surface conforms to both aerodynamic and imaging requirements. Appropriate correction is required because a conformal dome induces significant aberrations. This paper intends to explain that an effective solution to the easy-fabrication conic surface corrector compensates aberrations induced by a coaxial aspheric dome. A conformal optical system with an ellipsoid MgF2 conformal dome, which has a fineness ratio of 2.0, is designed as an example. The field of regard angle is pm 30 degrees with a pm 2 degree instantaneous field of view. The system's ultimate value of modulation transfer function is close to the diffraction limit, which indicates that the performance of the conic conformal optical system with a fixed conic corrector meets the imaging requirements.

关键词: conformal optics, dome, conic corrector, Risley prism

Abstract: A conformal optical system refers to the one whose first optical surface conforms to both aerodynamic and imaging requirements. Appropriate correction is required because a conformal dome induces significant aberrations. This paper intends to explain that an effective solution to the easy-fabrication conic surface corrector compensates aberrations induced by a coaxial aspheric dome. A conformal optical system with an ellipsoid MgF2 conformal dome, which has a fineness ratio of 2.0, is designed as an example. The field of regard angle is $\pm30$  degrees with a $\pm2$ degree instantaneous field of view. The system's ultimate value of modulation transfer function is close to the diffraction limit, which indicates that the performance of the conic conformal optical system with a fixed conic corrector meets the imaging requirements.

Key words: conformal optics, dome, conic corrector, Risley prism

中图分类号:  (Optical system design)

  • 42.15.Eq
42.15.Fr (Aberrations) 07.60.-j (Optical instruments and equipment)