(19)

(11)

EP 4 824 594 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24833430.2 (22) Date of filing: 12.12.2024

(51) International Patent Classification (IPC):  G02B 6/02(2006.01) G02B 6/28(2006.01) (52) Cooperative Patent Classification (CPC): G02B 6/02042; G02B 6/2813 (86) International application number: PCT/EP2024/085861 (87) International publication number: WO 2025/125400 (19.06.2025 Gazette 2025/25)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 14.12.2023 EP 23216711 (71) Applicant: Vrije Universiteit Brussel 1050 Brussel (BE)	(72) Inventors: BAGHDASARYAN, Tigran 1500 Halle (BE) VANMOL, Koen 3190 Boortmeerbeek (BE) THIENPONT, Hugo 1755 Pajottegem (BE) BERGHMANS, Francis 2260 Westerlo (BE) VAN ERPS, Jürgen 3080 Tervuren (BE) (74) Representative: Winger  Mouterij 16 bus 101 3190 Boortmeerbeek 3190 Boortmeerbeek (BE)