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7 February 2000 Rapid prototyping process using linear array of high-power laser diodes
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Proceedings Volume 3888, High-Power Lasers in Manufacturing; (2000)
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan
Because of the weak points of the SLS spot Scanning process, a new rapid prototyping process -- SLS line scan using linear array of high power laser diodes regarded as energy sources is researched in this paper. A linear array with requisite length is formed by some high power laser diodes that can be derived individually. Beams of the linear array are transferred to the workplace and imaged some short and light lines by the corresponding optical collimators. They are lined up in a linear laser beam without separation whose length is equal to that of the linear array diodes. When sintering powdered material, the linear laser beam scans in one direction along x axis only. Only if the maximum line length is less than the y axial size of the workpiece, it is necessary that linear laser beam is lapped for some times in the y axis. The Scanning mode of x-y simultaneous guideways are used in this new system which differs entirely from the vibrating mirror scan. The scanning trace of the latter is an arc that will influence processing quality. This new process has higher efficiency and better quality than the traditional spot scanning method.
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Linquan Zhu, Jun Cheng, and Hanchang Zhou "Rapid prototyping process using linear array of high-power laser diodes", Proc. SPIE 3888, High-Power Lasers in Manufacturing, (7 February 2000);


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