中国物理B ›› 2009, Vol. 18 ›› Issue (2): 565-570.doi: 10.1088/1674-1056/18/2/030

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Conformal optical design with combination of static and dynamic aberration corrections

刘家国1, 李岩2, 李林2, 黄一帆2   

  1. (1)207 Institute of China Aerospace Science & Industry Corporation 50 Yongding Road, Haidian District, Beijing 100854, China; (2)Department of Optoelectronic Engineering, Beijing Institute of Technology, Beijing 100081, China;207 Institute of China Aerospace Science & Industry Corporation 50 Yongding Road, Haidian District, Beijing 100854, China
  • 收稿日期:2008-05-03 修回日期:2008-07-14 出版日期:2009-02-20 发布日期:2009-02-20
  • 基金资助:
    Project supported by the National High Technology Research and Development Program of China (Grant No 2006AA012339).

Conformal optical design with combination of static and dynamic aberration corrections

Li Yan(李岩)a)b), Li Lin(李林)a)b)†, Huang Yi-Fan(黄一帆)a)b), and Liu Jia-Guo(刘家国)b)   

  1. a Department of Optoelectronic Engineering, Beijing Institute of Technology, Beijing 100081, China; b 207 Institute of China Aerospace Science & Industry Corporation 50 Yongding Road, Haidian District, Beijing 100854, China
  • Received:2008-05-03 Revised:2008-07-14 Online:2009-02-20 Published:2009-02-20
  • Supported by:
    Project supported by the National High Technology Research and Development Program of China (Grant No 2006AA012339).

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摘要： Conformal domes that are shaped to meet aerodynamic requirements can increase range and speed for the host platform. Because these domes typically deviate greatly from spherical surface descriptions, a variety of aberrations are induced which vary with the field-of-regard (FOR) angle. A system for correcting optical aberrations created by a conformal dome has an outer surface and an inner surface. Optimizing the inner surface is regard as static aberration correction. A deformable mirror is placed at the position of the secondary mirror in the two-mirror all reflective imaging system, which is the dynamic aberration correction. An ellipsoidal MgF2 conformal dome with a fineness ratio of 1.0 is designed as an example. The FOR angle is 0°--30°, and the design wavelength is 4μm. After the optimization at 7 zoom positions by using the design tools Code V, the root-mean-square (RMS) spot size is reduced to approximately 0.99 to 1.48 times the diffraction limit. The design results show that the performances of the conformal optical systems can be greatly improved by the combination of the static correction and the dynamic correction.

关键词: conformal domes, Zernike polynomial surface, deformable mirror, aberration correction

Abstract: Conformal domes that are shaped to meet aerodynamic requirements can increase range and speed for the host platform. Because these domes typically deviate greatly from spherical surface descriptions, a variety of aberrations are induced which vary with the field-of-regard (FOR) angle. A system for correcting optical aberrations created by a conformal dome has an outer surface and an inner surface. Optimizing the inner surface is regard as static aberration correction. A deformable mirror is placed at the position of the secondary mirror in the two-mirror all reflective imaging system, which is the dynamic aberration correction. An ellipsoidal MgF2 conformal dome with a fineness ratio of 1.0 is designed as an example. The FOR angle is 0°--30°, and the design wavelength is 4μm. After the optimization at 7 zoom positions by using the design tools Code V, the root-mean-square (RMS) spot size is reduced to approximately 0.99 to 1.48 times the diffraction limit. The design results show that the performances of the conformal optical systems can be greatly improved by the combination of the static correction and the dynamic correction.

Key words: conformal domes, Zernike polynomial surface, deformable mirror, aberration correction

中图分类号:  (Aberrations)

  • 42.15.Fr
42.79.Bh (Lenses, prisms and mirrors) 42.30.-d (Imaging and optical processing) 07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing) 42.79.Pw (Imaging detectors and sensors)