光学精密工程2017，Vol.25Issue(10)：2572-2579,8.DOI:10.3788/OPE.20172510.2572
大口径光学系统的镜面视宁度检测
Seeing metrology of large aperture mirror of telescope
摘要
Abstract
To ensure the quality and efficiency of manufacturing and detecting large aperture optical systems ,a method to improve the seeing metrological accuracy was proposed .By determining the wavefront slope with electronic autocollimators and a flat mirror ,the relationship between slope infor-mation and mirror seeing was deduced .With the purpose to enhance the accuracy and to exceed the limit of only one autocollimator ,three autocollimators were used to calibrate each other .To decrease errors ,a hexapod platform was adopted to support the cube mirror to improve the accuracy to 0 .01″. Moreover ,hexapod platform errors induced from the test environment was estimated by the related principle of frequency response function .Finally ,the normalized Point Source Sensitivity (PSSn) was deduced to evaluate the testing results .The simulation and experiment were performed .For mirror seeing ,the slope power spectra and original power spectra in two different directions were calculated , and both PSSn in two directions are 0 .999 based on the relation between power spectra and PSSn . This method can be used to quantitatively predict the mirror seeing of primary mirrors under actual working conditions of the telescopes .关键词
光学检测/镜面视宁度/大口径光学系统/功率谱/自准直仪Key words
optical test/mirror seeing/large aperture optical system/Power Spectral Density (PSD):autocollimator分类
机械制造引用本文复制引用
杨飞,安其昌,张静,赵宏超,郭鹏,姜海波..大口径光学系统的镜面视宁度检测[J].光学精密工程,2017,25(10):2572-2579,8.基金项目
中国科学院青年创新促进会基金资助项目(No.2016198) （No.2016198）
国家自然科学基金资助项目(No.11403022,No.11673080) （No.11403022,No.11673080）
