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EP 4 681 193 A1

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(43) Date of publication: 21.01.2026 Bulletin 2026/04 (21) Application number: 23933324.8 (22) Date of filing: 17.04.2023

(51) International Patent Classification (IPC):  G09F 9/00(2006.01) G02B 6/00(2006.01) G09F 13/00(2006.01) F21V 8/00(2006.01) (52) Cooperative Patent Classification (CPC): G09F 2013/1872; G09F 2013/184; G09F 2013/1831; G09F 2013/1836; G09F 13/18 (86) International application number: PCT/CN2023/088719 (87) International publication number: WO 2024/216443 (24.10.2024 Gazette 2024/43)

(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 (71) Applicant: Siemens Aktiengesellschaft 80333 München (DE)	(72) Inventors: PAN, Yu Xia Chengdu, Sichuan 611731 (CN) LAN, Ting Li Chengdu, Sichuan 611731 (CN) ZHANG, Tie Qiang Chengdu, Sichuan 611731 (CN) CHEN, Chang Sen Chengdu, Sichuan 611731 (CN) REN, Zhan Bo Chengdu, Sichuan 611731 (CN) (74) Representative: Isarpatent  Patent- und Rechtsanwälte Partg mbB Friedrichstraße 31 80801 München 80801 München (DE)