Coating the 2-m level primary mirror with protected aluminum
文献类型：会议论文
| 作者 | Pei, Wenjun1; Liu, Hongxiang1; Du, Weichuan1,2 |
| 出版日期 | 2012 |
| 会议名称 | Proceedings of SPIE: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes |
| 会议日期 | 2012 |
| 卷号 | 8415 |
| 页码 | 841517 |
| 通讯作者 | Pei, W. |
| 中文摘要 | In order to evaporate the Ø2.4m large-scale speculum, we have developed a high-vacuum resistance evaporation machine which is of the nation's largest bell-type, and we first propose to use the structure of the protected-Al coating with SiO coating by evaporating from top to bottom. The results show that the non-uniformity of aluminum coating is no more than 5.17% within 1.8 meters in diameter, also after environmental testing, there is no change on the mirror surface, and the reflectance decreased less than 1%. The average of the speculum reflectivity is Rav>88%@350nm-1800nm and Rav>90%@ 400nm-2500nm.We have separately completed the Ø 1.8m plane mirror in April 2011 and the Ø 1.8m concave mirror in October 2011. The results show that the PV value is less than λ/10 after evaporation and the RMS value has no change. © 2012 SPIE. |
| 英文摘要 | In order to evaporate the Ø2.4m large-scale speculum, we have developed a high-vacuum resistance evaporation machine which is of the nation's largest bell-type, and we first propose to use the structure of the protected-Al coating with SiO coating by evaporating from top to bottom. The results show that the non-uniformity of aluminum coating is no more than 5.17% within 1.8 meters in diameter, also after environmental testing, there is no change on the mirror surface, and the reflectance decreased less than 1%. The average of the speculum reflectivity is Rav>88%@350nm-1800nm and Rav>90%@ 400nm-2500nm.We have separately completed the Ø 1.8m plane mirror in April 2011 and the Ø 1.8m concave mirror in October 2011. The results show that the PV value is less than λ/10 after evaporation and the RMS value has no change. © 2012 SPIE. |
| 收录类别 | EI |
| 语种 | 英语 |
| ISSN号 | 0277786X |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/7857]  |
| 专题 | 光电技术研究所_薄膜光学技术研究室（十一室） |
| 作者单位 | 1.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China 2.Graduate School, Chinese Academy of Sciences, Beijing 100039, China |
| 推荐引用方式 GB/T 7714 | Pei, Wenjun,Liu, Hongxiang,Du, Weichuan. Coating the 2-m level primary mirror with protected aluminum[C]. 见:Proceedings of SPIE: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes. 2012. |
入库方式： OAI收割
来源：光电技术研究所
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