(19)

(11)

EP 4 367 535 A1

(12)

(43) Date of publication: 15.05.2024 Bulletin 2024/20 (21) Application number: 21742120.5 (22) Date of filing: 09.07.2021

(51) International Patent Classification (IPC):  G02B 1/00(2006.01) G02F 1/17(2019.01) G02B 5/00(2006.01) (52) Cooperative Patent Classification (CPC): G02F 2202/36; G02F 2202/022; G02F 1/0018; G02F 2201/44; G02B 26/0808; G02B 26/02 (86) International application number: PCT/EP2021/069202 (87) International publication number: WO 2023/280426 (12.01.2023 Gazette 2023/02)

(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 (71) Applicant: Baden-Württemberg Stiftung gGmbH 70174 Stuttgart (DE)	(72) Inventors: GIESSEN, Harald 67297 Marnheim (DE) KARST, Julian 70569 Stuttgart (DE) HENTSCHEL, Mario 71034 Böblingen (DE) (74) Representative: Kordel, Mattias et al Gleiss Große Schrell und Partner mbB Patentanwälte Rechtsanwälte Leitzstrasse 45 70469 Stuttgart 70469 Stuttgart (DE)