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Chin. Phys. B, 2013, Vol. 22(7): 074212    DOI: 10.1088/1674-1056/22/7/074212
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

Sphere-cone-polynomial special window with good aberration characteristic

Wang Chao (王超)a b, Zhang Xin (张新)a, Qu He-meng (曲贺盟)a, Wang Ling-jie (王灵杰)a, Wang Yu (王钰)a b
a Key Laboratory of Optical System Advanced Manufacturing Technology, Changchun Institute of Optics, Fine Mechanics and Physics,Chinese Academy of Sciences, Changchun 130033, China;
b University of Chinese Academy of Sciences, Beijing 100039, China
Abstract  Optical windows with external surfaces shaped to satisfy operational environment needs are known as special windows. A novel special window, sphere-cone-polynomial (SCP) window, is proposed. The formulas of this window shape are given. An SCP MgF2 window with a fineness ratio of 1.33 is designed as an example. The field-of-regard (FOR) angle is ±75°. From the window system simulation results obtained with the calculated fluid dynamics (CFD) and optical design software, we find that compared to the conventional window forms, the SCP shape can not only introduce relatively less drag in the airflow, but also have the minimal effect on imaging. So the SCP window optical system can achieve a high image quality across a super wide FOR without adding extra aberration correctors. The tolerance analysis results show that the optical performance can be maintained with a reasonable fabricating tolerance to manufacturing errors.
Keywords:  special optical window      sphere-cone-polynomial surface      aberration characteristic  
Received:  20 December 2012      Revised:  15 January 2013      Accepted manuscript online: 
PACS:  42.79.-e (Optical elements, devices, and systems)  
  42.15.Eq (Optical system design)  
  42.15.Fr (Aberrations)  
Fund: Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 61007009).
Corresponding Authors:  Wang Chao     E-mail:  Nicklo19992009@163.com

Cite this article: 

Wang Chao (王超), Zhang Xin (张新), Qu He-meng (曲贺盟), Wang Ling-jie (王灵杰), Wang Yu (王钰) Sphere-cone-polynomial special window with good aberration characteristic 2013 Chin. Phys. B 22 074212

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