CAJ | 학술논문

运动平台上的光学系统不可避免的产生镜面失调,如何描述失调光学系统的光路传输是一个非常迫切的问题.本文利用Matlab符号运算,通过两次坐标旋转和坐标平移得出了失调镜面方程,随后用矢量形式反射定律求出光线经过失调镜面后的方向矢量,通过光线追迹法,建立了失调光路传输模型.实例计算中,以某仪器的望远镜结构为光学模型,用Patran_Nastran的瞬态求解功能,求得在xyz方向同时加载相应正弦振动时镜面的失调位移,随后利用光路传输模型,得出了过主镜中心的光线(视轴)经主镜、次镜和反射镜反射后的最大抖动角度分别为0.0034°,0.0161°,0.0177°,并且得出了光斑在靶面及空间运动轨迹.
운동평태상적광학계통불가피면적산생경면실조,여하묘술실조광학계통적광로전수시일개비상박절적문제.본문이용Matlab부호운산,통과량차좌표선전화좌표평이득출료실조경면방정,수후용시량형식반사정률구출광선경과실조경면후적방향시량,통과광선추적법,건립료실조광로전수모형.실례계산중,이모의기적망원경결구위광학모형,용Patran_Nastran적순태구해공능,구득재xyz방향동시가재상응정현진동시경면적실조위이,수후이용광로전수모형,득출료과주경중심적광선(시축)경주경、차경화반사경반사후적최대두동각도분별위0.0034°,0.0161°,0.0177°,병차득출료광반재파면급공간운동궤적.
@@@@A simulation of light beam propagation in the misaligned optical system under mechanical vibration is deduced by the means of ray tracing method based on coordinate transformation and reflection law. A telescope structure of an apparatus was constructed which was then imported into Patran_Nastran to perform a transient response after sine vibrations was applied in the xyz directions simultaneously so as to obtain the displacement of key points of mirrors. Then, the displacement was used by the simulation program to compute the jitter angles. The amplitude of beam jitter angles were 0.003 4°, 0.016 1°, 0.017 7° respectively after optical beam reflected by primary mirror, secondary mirror and reflection mirror. Moreover, the traces of facula in the target plane and in the space were drawn.