Manufacturing and testing of the large lenses for Dark Energy Survey (DES) at THALES SESO
Manufacturing and testing of the large lenses for Dark Energy Survey (DES) at THALES SESO
复制标题
泰雷兹 SESO 用于暗能量勘测 (DES) 的大透镜的制造和测试
DOI：
10.1117/12.923044
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Fappani D
中科院分区：
文献类型：
--
作者：
Fappani D
在简要介绍了什么是暗能量调查(DES)项目以及将使用哪些光学仪器之后，介绍将主要集中在构成DES相机(DECAM)的大透镜(直径可达1米)的光学生产上，该透镜位于主观测望远镜的焦面上。将特别强调光学制造问题和干涉测试解决方案，包括对折射率不均匀性的补偿，这是泰利斯Seso特别针对最大的入射透镜(非常具有挑战性的CV/CX半月面，名为C1)进行的。通过几个典型的过去实现或未来可能的实现的例子，不同的天文项目需要1M级的光学系统，演讲结束时将简要回顾泰利斯Seso公司相应的现有“最先进”的这些技术。
After a brief introduction of what is the Dark Energy Survey (DES) project and which optical instrumentation will be used, the presentation will be mainly focused onto the optical production of the large lenses (up to 1m diameter) constituting the DES Camera (DECAM) located at the focal plane of the main observing telescope. Special emphasis will be made onto the optical manufacturing issues and interferometric testing solutions, including compensation of index inhomogeneities, which have been carried out by THALES SESO especially for the biggest entrance lens (very challenging CV/CX meniscus named C1). Through several examples of typical past realizations or future possible ones for different astronomical projects requiring 1m-class optics, the presentation will conclude by a brief over review of the corresponding existing "state of the art" at THALES SESO for these technologies.