(11) EP 3 800 002 A1 (19) (12) EUROPEAN PATENT APPLICATION (43) Date of publication:  07.04.2021 Bulletin 2021/14 (21) Application number:  20199919.0 (22) Date of filing:  02.10.2020 (84) Designated Contracting States:  AL AT BE BG CH CY CZ DE DK EE ES FI FR GB  GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO  PL PT RO RS SE SI SK SM TR Designated Extension States:  BA ME Designated Validation States:  KH MA MD TN (72) Inventors:  • MEDENDORP, Harm 1013 BD Amsterdam (NL) • VAN LEENT, Tim Bernardus Maria 1013 BD Amsterdam (NL) • BERRIER, Timon Daniel 1013 BD Amsterdam (NL) (74) Representative:  V.O. P.O. Box 87930 2508 DH Den Haag (NL) (30) Priority: 04.10.2019 NL 2023968 (71) Applicant:  Laser Precision Solutions B.V. 1013 BD Amsterdam (NL) (57) The present application relates to a beam deliv- ery system (2), comprising a shield (4) which includes at least one beam passage (6) for transmission of at least one laser beam (8), an optics assembly (10) configured to at least partly focus the at least one laser beam (8) on the at least one beam passage (6), and means for pro- viding a fluid flow (F) through the at least one beam pas- sage (6). The invention also provides a train and a transport sys- tem, as well as a beam delivery method that comprises the steps of : transmitting at least one laser beam (8) through a respective at least one beam passage (6) of a shield (8), at least partly focusing the at least one laser beam (8) on the at least one beam passage (6), and providing a fluid flow (F) through the at least one beam passage (6). EP 800 002 A1 (54) BEAM DELIVERY SYSTEM, METHOD, TRAIN AND TRANSPORT SYSTEM Printed by Jouve, 75001 PARIS (FR) B23K 26/146 (2014.01) B23K 26/36 (2014.01) B08B 7/00 (2006.01) B23K 26/073 (2006.01) B23K 26/14 (2014.01) B23K 26/142 (2014.01) E01B 31/12 (2006.01) B23K 101/26 (2006.01) (51) Int Cl.: