CAJ | 학술논문

文中以矢量波像差理论为基础,对TMA光学系统的失调像像差特性进行分析,通过分析发现失调TMA系统的初级球差在全视场内为常量,彗差在全视场内的方向与量值均为常量,由失调引入的像散表现为失对称性、像散值与视场成线性,其零点位中心视场.在校正失调产生彗差时,TMA系统像散零点位轴上视场,像差接近零,而边视场的像散然较大,此在TMA系统的装调过程中,需要测量多个视场的波像差.在同样情况下若轴上视场测量到像散,则是由主镜的面形误差导致而非系统失调引起.利用CODE V对失调TMA系统的失调像差分布进行仿真,结果表明,利用矢量波像差理论可以对失调TMA系统的像差进行定性分析,以提高TMA系统的装调效率.
문중이시량파상차이론위기출,대TMA광학계통적실조상상차특성진행분석,통과분석발현실조TMA계통적초급구차재전시장내위상량,혜차재전시장내적방향여량치균위상량,유실조인입적상산표현위실대칭성、상산치여시장성선성,기영점위중심시장.재교정실조산생혜차시,TMA계통상산영점위축상시장,상차접근령,이변시장적상산연교대,차재TMA계통적장조과정중,수요측량다개시장적파상차.재동양정황하약축상시장측량도상산,칙시유주경적면형오차도치이비계통실조인기.이용CODE V대실조TMA계통적실조상차분포진행방진,결과표명,이용시량파상차이론가이대실조TMA계통적상차진행정성분석,이제고TMA계통적장조효솔.
Based on the vector wavefront aber ration theory, the misalignment induced aberration's characteristic of TMA optical system was analyses in this paper. It is shown that a misaligned TMA has three residual 3rd aberrations. The 3rd order spherical aberration that is constant over the field and the 3rd order coma is a constant in magnitude and orientation over the field. Moreover, the 3rd order astigmatism is field-asymmetric in orientation and increases linearly with the field, and the location zero for the field-asymmetric, field linear astigmatism always reside at the center of the field of view. It has been demonstrated that a TMA under assembly is only measured to have perfect performance on-axis which is not aligned in any significant way, so the measurements of multiple field points for the TMA are required in the process of alignment. Under condition of remove axial coma, if astigmatism is measured on-axis, which is caused by the primary mirror astigmatic figure error but not the misalignment.