双回转光纤定位单元装置

论文给出了一种适合大天区面积多目标光纤光谱天文望远镜(LAMO ST)的新型光纤定位单元装置.它包括一个作±180°范围回转的中心回转机构和±90°回转的偏心回转机构.定位时,光纤始终在望远镜焦面上运动,不会发生离焦现象;且结构简单,装拆方便,易于保证精度,制造成本低.测试结果表明,该单元装置完全能满足LAMOST的需要.

Double Revolving Optical Fiber Positioning Unit Device

This paper presents an optical fiber position ing unit device for LAMOST (Large Sky Area Multi-Object Fiber Spectroscope Telescope). The device consists of a hollow shaft revolving mechanism, and eccentric axis r evolving mechanism relative to the hollow shaft. The hollow shaft turns round at the rang e of ±180°and the eccentric axis turns round at the range of ±90° driven by each stepping motor. When positioning, the fiber end moves constantly on the focal p late without deviating from the focal plane. It has a simple structur e, co uld be machined and assembled and taken down easily and could be ensured machini ng practices easily, so could be reduced manufacture costs. Testing results demo nstrate that this new double revolving optical fiber positioning unit device wel l satisfies the requirements of LAMOST.