应力镜面抛光。2：抛物面离轴部分的制造。
Stressed mirror polishing. 2: Fabrication of an off-axis section of a paraboloid.
作者信息
Nelson J E, Gabor G, Hunt L K, Lubliner J, Mast T S
出版信息
Appl Opt. 1980 Jul 15;19(14):2341-52. doi: 10.1364/AO.19.002341.
PMID:20234419
Abstract
A mirror has been fabricated with the shape of an off-axis section of a paraboloid by grinding and polishing a sphere into a prestressed blank. The applied stresses were then removed allowing the mirror to spring into the desired paraboloidal shape. The 36-cm diam off-axis section deviated 9.9-microm rms from the polished sphere. The final surface deviated 0.03-microm rms from the desired off-axis section.
摘要
通过将一个球体研磨和抛光成一个预应力坯料，制作出了一个呈抛物面离轴截面形状的镜子。然后去除施加的应力，使镜子弹成所需的抛物面形状。直径36厘米的离轴截面与抛光后的球体相比，均方根偏差为9.9微米。最终表面与所需的离轴截面相比，均方根偏差为0.03微米。
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