摘要
用于Φ1.2 mF/1.5主镜面形检验的补偿器,需要补偿0.087 mm的非球面度,并满足0.033λ(RMS)面形检测要求。介绍了该补偿器的设计、误差分析、加工、标校及最终主镜检测的情况。主镜检测前用计算全息(CGH)对补偿器标校显示:补偿器产生的抛物面面形误差为0.012λ(RMS),二次曲面常数K的误差为0.006 4%;主镜最终补偿检测结果为:面形误差0.027λ(RMS),二次曲面常数K的误差为0.030 6%,与分析的结果相符。结果表明,补偿器设计合理,建立的误差分析原则和方法可行,加工质量可靠,为更大口径高陡度非球面主镜的补偿检验奠定了坚实基础。
A null corrector was designed to compensate 0. 087 mm surface departure from the best fitting sphere for a Ф1. 2 m F/1.5 paraboloidal mirror and to realize the surface error less than 0. 033）, （RMS）. The structure design, error analysis, manufacturing, certification and final application of the corrector were introduced in detail. The certification by Computer-Generated Hologram （CGH） in advance shows that the shape and conic errors produced by corrector are 0. 012）,（RMS）and 0. 006 4%, and the final null testing results give that the surface and conic errors of primary mirror are 0. 027）, （RMS）and 0.030 6%, which is consistent with the tolerance analysis well. The results indicate that the design,tolerance analysis and the quality of the corrector are rational and reliable, and it can lay a solid foundation for the null test of larger primary mirror.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2008年第8期1384-1388,共5页
Optics and Precision Engineering
基金
国家973工程资助项目
关键词
光学加工
非球面检验
零补偿检验
补偿器设计
补偿器标校
optical fabrication
aspherical testing
null test
corrector design
corrector certification
