The Detection And Assembling For Ultra High Resolution Spaceborne Optical System

With the rapid development of modern space technology, the resolution demand of detecting target is higher and higher. In order to detect tiny details of the detecting target to get a clearer picture, the study of ultra high solution spaceborne optical system has become an important subject of the researchers in this field. Optical system design, optical processing technology, detection methods and assembly process are the important factors that affect optical system image quality directly. For ultra high resolution spaceborne optical system, optical design of closing to the diffraction limit, optical components with the requirement of processing precision and sophisticated detection and alignment method are both the effective means to improve the image quality.The paper, which center content is to assemble the ultra high resolution optical system based on the existing optical parts, mainly focuses on the study of the detection and assembling for ultra high resolution spaceborne optical system. All kinds of high precision optical testing instruments are used to detect the optical components and system parameters, surface from deviation of optical element with ZYGO laser interferometer, center thickness and air interval of lens with image measuring instrument and mirror locator, center aberration of the optical element and system with TRIOPTICS center deviation measuring instrument. In order to reduce the alignment error, the optical system is decomposed into small lens group to adjust respectively to make a minimum center deviation, using the collimator to detect the resolution and image quality. According to the principle of alignment complementarity, the allowed deviation of the parameters of the optical element can be compensated through the air interval between lens. After assembling, the image quality of the optical system, which pixel is higher than20MP, meet the design requirementers.