在光学零件制造和光学系统装配过程中,不可避免地产生表而和元件的中心偏,结果便出现象差,严重损坏光学系统象质。由中心偏产生的象差可用级数微分法确定,级数就是根据孔径角和视场角分解定中心光学系统的象差。相应的象差级在微分时降低一级,因此由中心偏产生的象差是四 In the manufacture of optical components and optical system assembly process, the center of the table and the components inevitably produce bias, resulting in aberrations, seriously damaging the quality of the optical system. The aberration generated by the center deviation can be determined by the differential method of series, and the series is the aberration of the centering optical system based on the aperture angle and the angle of view. The corresponding aberration level is reduced by one at the time of differentiation, so the aberration generated by the center is four