(19)

(11)

EP 4 359 850 A2

(12)

(88) Date of publication A3: 02.02.2023 (43) Date of publication: 01.05.2024 Bulletin 2024/18 (21) Application number: 22744611.9 (22) Date of filing: 24.06.2022

(51) International Patent Classification (IPC):  G02B 27/01(2006.01) (52) Cooperative Patent Classification (CPC): G02B 27/0172; G02B 2027/0123 (86) International application number: PCT/US2022/035014 (87) International publication number: WO 2022/272143 (29.12.2022 Gazette 2022/52)

(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: 24.06.2021 US 202163214606 P 23.06.2022 US 202217847752 (71) Applicant: META PLATFORMS TECHNOLOGIES, LLC Menlo Park, CA 94025 (US)	(72) Inventors: KELLY, Kieran Connor Menlo Park, California 94025 (US) WHEELWRIGHT, Brian Menlo Park, California 94025 (US) GENG, Ying Menlo Park, California 94025 (US) (74) Representative: Murgitroyd & Company  165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)