长春理工大学学报(自然科学版)
長春理工大學學報(自然科學版)
장춘리공대학학보(자연과학판)
JOURNAL OF CHANGCHUN UNIVERSITY OF SCIENCE AND TECHNOLOGY(NATURAL SCIENCE EDITION)
2014年
3期
5-8
,共4页
王乃祥%徐钰蕾%惠守文%李延伟%姚园%丁亚林
王迺祥%徐鈺蕾%惠守文%李延偉%姚園%丁亞林
왕내상%서옥뢰%혜수문%리연위%요완%정아림
光学设计%光学窗口%热变形%Zernike多项式
光學設計%光學窗口%熱變形%Zernike多項式
광학설계%광학창구%열변형%Zernike다항식
optical design%optical window%thermal deformation%Zernike polynomial
为了获得航空光学遥感器高质量成像,分析了高马赫飞行下温度和压力对光学窗口光学性能的影响。首先利用有限元分析软件计算出窗口玻璃在指定温度场或压力场和边界条件作用下的变形量;然后根据得到的窗口玻璃表面节点的位移变化,再以Zernike多项式为接口拟合镜面变形,将计算出的Zernike拟合系数带入光学分析软件ZEMAX中进行分析;最后结合某光学系统对比分析了温度场和压力场作用下的光学系统传递函数图。通过对比结果分析可知,高马赫飞行时,窗口玻璃上产生的温度场对光学系统的传递函数的影响比窗口上的压力场大得多。结果表明,高马赫飞行中,窗口玻璃的设计应更多程度的考虑温度影响。此分析可为高马赫工况下光学窗口的设计提供一定参考。
為瞭穫得航空光學遙感器高質量成像,分析瞭高馬赫飛行下溫度和壓力對光學窗口光學性能的影響。首先利用有限元分析軟件計算齣窗口玻璃在指定溫度場或壓力場和邊界條件作用下的變形量;然後根據得到的窗口玻璃錶麵節點的位移變化,再以Zernike多項式為接口擬閤鏡麵變形,將計算齣的Zernike擬閤繫數帶入光學分析軟件ZEMAX中進行分析;最後結閤某光學繫統對比分析瞭溫度場和壓力場作用下的光學繫統傳遞函數圖。通過對比結果分析可知,高馬赫飛行時,窗口玻璃上產生的溫度場對光學繫統的傳遞函數的影響比窗口上的壓力場大得多。結果錶明,高馬赫飛行中,窗口玻璃的設計應更多程度的攷慮溫度影響。此分析可為高馬赫工況下光學窗口的設計提供一定參攷。
위료획득항공광학요감기고질량성상,분석료고마혁비행하온도화압력대광학창구광학성능적영향。수선이용유한원분석연건계산출창구파리재지정온도장혹압력장화변계조건작용하적변형량;연후근거득도적창구파리표면절점적위이변화,재이Zernike다항식위접구의합경면변형,장계산출적Zernike의합계수대입광학분석연건ZEMAX중진행분석;최후결합모광학계통대비분석료온도장화압력장작용하적광학계통전체함수도。통과대비결과분석가지,고마혁비행시,창구파리상산생적온도장대광학계통적전체함수적영향비창구상적압력장대득다。결과표명,고마혁비행중,창구파리적설계응경다정도적고필온도영향。차분석가위고마혁공황하광학창구적설계제공일정삼고。
In order to obtain high quality image of the aero optical remote sensor, on the condition of high Maher the influence of temperature and pressure to the optical properties of the optical window is analyzed in this paper. Firstly, the deformation of window glass at a specified temperature field and pressure field and boundary conditions is calculated by the finite element analysis software. Then according to the displacement changes of window glass surface nodes,the surface deformation is fitted in Zernike polynomial as the interface,the calculated Zernike fitting coefficients will brought in and analyzed by Zemax Optical Software. At last the transfer function diagrams of the optical system on temperature field and stress field are comparatively analyzed. By comparing and analyzing the result,it can be obtained that in high Maher flight the effect of temperature field on the window glass of the transfer function is much larger than that of the pressure field on the window, so the the effect of temperature will be considered more in the design course of optical window.These analyses may provide some reference for the design of optical window under the condition of high Maher.