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(11)

EP 3 740 820 A1

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(43) Date of publication: 25.11.2020 Bulletin 2020/48 (21) Application number: 19700538.2 (22) Date of filing: 17.01.2019

(51) International Patent Classification (IPC):  G04B 17/04(2006.01) G04B 17/28(2006.01) G04B 17/06(2006.01) (86) International application number: PCT/EP2019/051188 (87) International publication number: WO 2019/141789 (25.07.2019 Gazette 2019/30)

(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: 18.01.2018 EP 18152356 (71) Applicant: Ecole Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne (CH)	(72) Inventors: KAHROBAIYAN, Mohammad Hussein 2000 Neuchâtel (CH) VARDI, Ilan 2000 Neuchâtel (CH) HENEIN, Simon 2000 Neuchâtel (CH) NUSSBAUMER, Billy 2017 Boudry (CH) THALMANN, Etienne 1009 Pully (CH) (74) Representative: e-Patent SA  Rue Saint-Honoré 1 Boîte Postale CP 2510 2001 Neuchâtel 2001 Neuchâtel (CH)