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EP 4 405 649 A1

(12)

(43) Date of publication: 31.07.2024 Bulletin 2024/31 (21) Application number: 22790468.7 (22) Date of filing: 16.09.2022

(51) International Patent Classification (IPC):  G01J 3/44(2006.01) G02B 21/08(2006.01) G01J 3/10(2006.01) G01J 3/02(2006.01) G01J 3/28(2006.01) (52) Cooperative Patent Classification (CPC): G01J 3/2823; G01J 3/44; G01J 2003/102; G01J 3/0218; G02B 21/08 (86) International application number: PCT/EP2022/075784 (87) International publication number: WO 2023/041714 (23.03.2023 Gazette 2023/12)

(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 (30) Priority: 20.09.2021 EP 21197832 (71) Applicant: Leibniz-Institut für Astrophysik Potsdam (AIP) 14482 Potsdam (DE)	(72) Inventors: ROTH, Martin 14547 Beelitz (DE) KORINTH, Florian 13359 Berlin (DE) SCHMÄLZLIN, Elmar 14473 Potsdam (DE) GAO, Lu 14480 Potsdam (DE) (74) Representative: Heinemeyer, Karsten  Advlnno Patent-u. Rechtsanwaltspart. mbB Heinemeyer & Joachim Sandstrasse 17-23 23552 Lübeck 23552 Lübeck (DE)