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Open AccessArticle

Design and Characterisation of a Fast Steering Mirror Compensation System Based on Double Porro Prisms by a Screw-Ray Tracing Method

1
Department of Mechanical Engineering, National Chung Cheng University, Chiayi County 62102, Taiwan
2
Advanced Institute of Manufacturing with High-Tech Innovations, National Chung Cheng University, Chiayi County 62102, Taiwan
3
Department of Mechanical Engineering, National Cheng Kung University, Tainan City 70101, Taiwan
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(11), 4046; https://doi.org/10.3390/s18114046
Received: 19 October 2018 / Revised: 13 November 2018 / Accepted: 17 November 2018 / Published: 20 November 2018
(This article belongs to the Special Issue Laser Sensors for Displacement, Distance and Position)
This study proposes a novel FSM compensation system for four degrees of freedom (DOF) laser errors compensation, which has the advantage of shorter optical path length, fewer elements and an easier set-up process, meaning that it can be used at different locations. A commercial software, Zemax, is used to evaluate the function of the proposed FSM compensation system and the mathematical modelling of the proposed FSM compensation system is established by using a skew-ray tracing method. Finally, the proposed FSM compensation system is then verified experimentally using a laboratory-built prototype and the result shows that the proposed FSM compensation system achieves the ability to compensate the 4 DOF of the laser source. View Full-Text
Keywords: fast steer mirror; FSM; Double Porro prisms; laser drift; skew-ray tracing method fast steer mirror; FSM; Double Porro prisms; laser drift; skew-ray tracing method
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Chang, Y.-H.; Liu, C.-S.; Cheng, C.-C. Design and Characterisation of a Fast Steering Mirror Compensation System Based on Double Porro Prisms by a Screw-Ray Tracing Method. Sensors 2018, 18, 4046.

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