A compact optical fiber positioner

Hongzhuan Hu; Jianping Wang; Zhigang Liu; Zengxiang Zhou; Chao Zhai; Jiaru Chu

doi:10.1117/12.2231864

22 July 2016 A compact optical fiber positioner

Hongzhuan Hu, Jianping Wang, Zhigang Liu, Zengxiang Zhou, Chao Zhai, Jiaru Chu

Proceedings Volume 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II; 991259 (2016) https://doi.org/10.1117/12.2231864
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

In this paper, a compact optical fiber positioner is proposed, which is especially suitable for small scale and high density optical fiber positioning. Based on the positioning principle of double rotation, positioner’s center shaft depends on planetary gear drive principle, meshing with the fixed annular gear central motor gear driving device to rotate, and the eccentric shaft rotated driving by a coaxial eccentric motor, both center and the eccentric shaft are supported by a rolling bearings; center and eccentric shaft are both designed with electrical zero as a reference point, and both of them have position-limiting capability to ensure the safety of fiber positioning; both eccentric and center shaft are designed to eliminating clearance with spring structure, and can eliminate the influence of gear gap; both eccentric and center motor and their driving circuit can be installed in the positioner’s body, and a favorable heat sink have designed, the heat bring by positioning operation can be effectively transmit to design a focal plane unit through the aluminum component, on sleeve cooling spiral airway have designed, when positioning, the cooling air flow is inlet into install hole on the focal plate, the cooling air flow can effectively take away the positioning’s heat, to eliminate the impact of the focus seeing. By measuring position device’s sample results show that: the unit accuracy reached 0.01mm, can meet the needs of fiber positioning.

Citation Download Citation

Hongzhuan Hu, Jianping Wang, Zhigang Liu, Zengxiang Zhou, Chao Zhai, and Jiaru Chu "A compact optical fiber positioner", Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 991259 (22 July 2016); https://doi.org/10.1117/12.2231864

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