含特殊整流罩的红外光学系统设计
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O04

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航空基金,教育部长江学者和创新团队发展计划?


Design of Infrared Optical System with Special Dome
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    摘要:

    提出了一种有效的特殊整流罩及其像差校正器的设计方法,运用Wassermann-Wolf微分方程组(W-W方程组)的原理,通过在商业光学设计软件中编译宏程序曲面拟合的方法得到校正器最佳面形,从而可以校正整流罩引入的球差、彗差,使系统成像质量得到较大的改善.文章在基于W-W方程的基础上,针对应用于红外系统的特殊整流罩做了实际方案设计,研究的光学系统工作谱段为中波红外,视场大于3.5度,F数F/1~F/2.5,系统采用了复杂化的R-C系统,最终成像质量达到衍射极限,可以满足特殊条件下的红外谱段成像要求,具有较高的实用价值.

    Abstract:

    The dome on an aircraft is not only for protection, but also a part of the infrared optical system for control and guide. In the past, in order to reduce its impact on the aberration of the imaging system, the traditional dome is designed as a concentric hemisphere. However, when the aircraft flies in a high speed, the problem of air resistance must be taken into account. The hemispheric dome is not the best solution from the aspect of aerodynamic performance of the whole system. Therefore the design of new domes and their associated infrared imaging systems receives special research interest nowadays. This paper presents an efficient approach of designing a special dome and its aberration corrector, using the method of Wassermann-Wolf differential equations to generate the optimum contour of the corrector through a macro in CODE V. This corrector reduces spherical aberration and coma which are introduced by the dome and improves the imaging quality of the system. This paper is based on the Wassermann-Wolf algorithm, aims at the designing of a dome in an infrared system which works in the spectrum of middle infrared with a field of view more than 3.5 and an F number of 1-2.5. It adopts a complex R-C form to make the final imaging quality meet the diffraction limit. The whole system satisfies the imaging requirements in the infrared spectrum, and has a high practical value.

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常军.含特殊整流罩的红外光学系统设计[J].红外与毫米波学报,2009,28(3):]. changjun. Design of Infrared Optical System with Special Dome[J]. J. Infrared Millim. Waves,2009,28(3).]

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