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)
aDepartment 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
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.
Received: 03 May 2008
Revised: 14 July 2008
Accepted manuscript online:
Fund: Project supported by the National
High Technology Research and Development Program of China (Grant No
2006AA012339).
Cite this article:
Li Yan(李岩), Li Lin(李林), Huang Yi-Fan(黄一帆), and Liu Jia-Guo(刘家国) Conformal optical design with combination of static and dynamic aberration corrections 2009 Chin. Phys. B 18 565
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