(19)

(11)

EP 4 154 055 A1

(12)

(43) Date of publication: 29.03.2023 Bulletin 2023/13 (21) Application number: 20764808.0 (22) Date of filing: 15.06.2020

(51) International Patent Classification (IPC):  G02B 27/48(2006.01) G02B 6/00(2006.01) G02B 27/09(2006.01) (52) Cooperative Patent Classification (CPC): G02B 27/48; G02B 27/0994 (86) International application number: PCT/SI2020/050014 (87) International publication number: WO 2021/257001 (23.12.2021 Gazette 2021/51)

(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: Univerza V Ljubljani 1000 Ljubljana (SI)	(72) Inventors: AGREZ, Vid 1000 Ljubljana (SI) PETKOVSEK, Rok 1000 Ljubljana (SI) (74) Representative: Patentni Biro AF d.o.o.  Kotnikova 32, p.p. 2706 1001 Ljubljana 1001 Ljubljana (SI)