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1. (WO2018085607) BEAM DIRECTOR WITH IMPROVED OPTICS

Pub. No.:    WO/2018/085607    International Application No.:    PCT/US2017/059815
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Sat Nov 04 00:59:59 CET 2017
IPC: B23K 26/00
B23K 26/04
B23K 26/10
B23K 26/28
F21V 7/00
F21V 7/09
Applicants: BIBAS, Charles
Inventors: BIBAS, Charles
Title: BEAM DIRECTOR WITH IMPROVED OPTICS
Abstract:
A beam director for use in 3D printers comprises a first mirror rotating about its longitudinal axis for redirecting a beam onto a second mirror and then onto a work surface, which may result in a beam with a distorted elliptical shape. A beam corrector, e.g. a lens or a reflective surface, is used to ensure the beam has the same dimensions in first and second perpendicular directions.