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(11)

EP 4 449 206 A1

(12)

(43) Date of publication: 23.10.2024 Bulletin 2024/43 (21) Application number: 22851105.1 (22) Date of filing: 11.12.2022

(51) International Patent Classification (IPC):  G03H 1/04(2006.01) G03H 1/02(2006.01) B29D 11/00(2006.01) G02B 5/18(2006.01) G03H 1/20(2006.01) G03H 1/12(2006.01) G02B 5/30(2006.01) (52) Cooperative Patent Classification (CPC): G03H 1/20; G03H 2001/0415; G03H 2001/0439; G03H 1/12; G03H 2210/20; G03H 2210/22; G03H 2223/20; G03H 2223/22; G03H 1/0248; G03H 2240/15; G03H 2222/31; G02B 5/1833; G02B 5/3016; G03H 2250/38; G03H 2250/41; G02B 5/3083; G03H 1/0476; G03H 2001/0482; G03H 2210/10; B29D 11/0074 (86) International application number: PCT/US2022/052479 (87) International publication number: WO 2023/114115 (22.06.2023 Gazette 2023/25)

(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: KH MA MD TN (30) Priority: 14.12.2021 US 202163289535 P 28.09.2022 US 202217954326 (71) Applicant: META PLATFORMS TECHNOLOGIES, LLC Menlo Park, CA 94025 (US)	(72) Inventors: OH, Chulwoo Menlo Park, California 94025 (US) SONG, Hyunmin Menlo Park, California 94025 (US) JANG, Changwon Menlo Park, California 94025 (US) LEIBOVICI, Matthieu Charles Raoul Menlo Park, California 94025 (US) LEE, Yun-Han Menlo Park, California 94025 (US) (74) Representative: Murgitroyd & Company  165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)