(19)

(11)

EP 4 573 848 A1

(12)

(43) Date of publication: 25.06.2025 Bulletin 2025/26 (21) Application number: 23751032.6 (22) Date of filing: 07.08.2023

(51) International Patent Classification (IPC):  H05B 45/50(2022.01) (52) Cooperative Patent Classification (CPC): H05B 45/50 (86) International application number: PCT/EP2023/071770 (87) International publication number: WO 2024/037901 (22.02.2024 Gazette 2024/08)

(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: KH MA MD TN (30) Priority: 15.08.2022 WO PCT/CN2022/112458 26.09.2022 EP 22197615 (71) Applicant: Signify Holding B.V. 5656 AE Eindhoven (NL)	(72) Inventors: YU, Cheng 5656 AE Eindhoven (NL) ZHANG, Xiangdong 5656 AE Eindhoven (NL) (74) Representative: Verweij, Petronella Daniëlle  Signify Netherlands B.V. Intellectual Property High Tech Campus 7 5656 AE Eindhoven 5656 AE Eindhoven (NL)