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(11)

EP 4 323 815 A1

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(43) Date of publication: 21.02.2024 Bulletin 2024/08 (21) Application number: 22721224.8 (22) Date of filing: 15.04.2022

(51) International Patent Classification (IPC):  G02B 5/18(2006.01) G02B 6/34(2006.01) G02B 27/42(2006.01) G02B 6/122(2006.01) G02B 27/01(2006.01) G03F 7/00(2006.01) (52) Cooperative Patent Classification (CPC): G02B 5/1861; G02B 5/1866; G02B 5/1847; G02B 27/0172; G03F 7/0002; G02B 2027/0178; G02B 2027/0125 (86) International application number: PCT/US2022/025021 (87) International publication number: WO 2022/221662 (20.10.2022 Gazette 2022/42)

(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: 15.04.2021 US 202163175357 P 13.04.2022 US 202217720058 (71) Applicant: META PLATFORMS TECHNOLOGIES, LLC Menlo Park, CA 94025 (US)

(72) Inventors: AZARI, Sara Menlo Park, California 94025 (US) LANE, Austin Menlo Park, California 94025 (US) DUNDAR ARISOY, Feyza Menlo Park, California 94025 (US) VORA, Ankit Menlo Park, California 94025 (US) MOHANTY, Nihar Ranjan Menlo Park, California 94025 (US) GUPTA, Vivek Menlo Park, California 94025 (US) ZHANG, Keren Menlo Park, California 94025 (US) (74) Representative: Murgitroyd & Company  Murgitroyd House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)