Design and development of a freeform active mirror for an astronomy application
Design and development of a freeform active mirror for an astronomy application
复制标题
用于天文学应用的自由曲面主动镜的设计和开发
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
J. Cuby
中科院分区：
文献类型：
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作者：
Z. Challita;T. Agócs;E. Hugot;A. Jaskó;G. Kroes;W. Taylor;Christopher Miller;H. Schnetler;L. Venema;L. Mosoni;D. Le Mignant;M. Ferrari;J. Cuby
抽象的。超大型望远镜的出现将带来前所未有的聚光能力和空间分辨率，但也将导致焦平面仪器的尺寸和复杂性大幅增加。自由曲面镜的使用可以大大减少光学系统中的组件数量。目前，制造问题限制了自由曲面镜在短波长下的普遍使用。本文概述了自由曲面反射镜在天文仪器中的应用，并介绍了两种有效的自由曲面光学系统。提出了一种新的制造方法，试图通过薄抛光基板的液压成形来克服制造问题。一个具体的设计的主动阵列的详细说明，这将补偿剩余的制造误差，热弹性变形，和重力引起的误差在观测过程中。组合液压成形镜和主动阵列组成自由形式主动镜实验，这将产生一个精确，紧凑，稳定的自由形式光学专用于可见光和近红外观测。
Abstract. The advent of extremely large telescopes will bring unprecedented light-collecting power and spatial resolution, but it will also lead to a significant increase in the size and complexity of focal-plane instruments. The use of freeform mirrors could drastically reduce the number of components in optical systems. Currently, manufacturing issues limit the common use of freeform mirrors at short wavelengths. This article outlines the use of freeform mirrors in astronomical instruments with a description of two efficient freeform optical systems. A new manufacturing method is presented which seeks to overcome the manufacturing issues through hydroforming of thin polished substrates. A specific design of an active array is detailed, which will compensate for residual manufacturing errors, thermoelastic deformation, and gravity-induced errors during observations. The combined hydroformed mirror and the active array comprise the Freeform Active Mirror Experiment, which will produce an accurate, compact, and stable freeform optics dedicated to visible and near-infrared observations.