(19)

(11)

EP 4 555 372 A1

(12)

(43) Date of publication: 21.05.2025 Bulletin 2025/21 (21) Application number: 23749219.4 (22) Date of filing: 07.07.2023

(51) International Patent Classification (IPC):  G02B 27/01(2006.01) (52) Cooperative Patent Classification (CPC): G02B 27/0176; G02B 2027/0178; G02B 2027/0169; G02B 27/0172; G02B 2027/0112 (86) International application number: PCT/US2023/027165 (87) International publication number: WO 2024/015266 (18.01.2024 Gazette 2024/03)

(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: 11.07.2022 US 202263388074 P 27.02.2023 US 202318174814 (71) Applicant: Meta Platforms Technologies, LLC Menlo Park, CA 94025 (US)	(72) Inventors: SCHULTZ, James Menlo Park, California 94025 (US) LIU, Zhiqiang Menlo Park, California 94025 (US) TOY, Randall Scott Menlo Park, California 94025 (US) (74) Representative: Murgitroyd & Company  165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)