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EP 4 256 228 A1

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(43) Date of publication: 11.10.2023 Bulletin 2023/41 (21) Application number: 22701470.1 (22) Date of filing: 05.01.2022

(51) International Patent Classification (IPC):  F21V 8/00(2006.01) G02B 6/42(2006.01) G02B 6/02(2006.01) G02B 6/44(2006.01) (52) Cooperative Patent Classification (CPC): G02B 6/4403; G02B 6/4249; G02B 6/0008; G02B 6/02033 (86) International application number: PCT/US2022/011312 (87) International publication number: WO 2022/164608 (04.08.2022 Gazette 2022/31)

(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: 26.01.2021 US 202163141792 P 16.11.2021 US 202117528023 (71) Applicant: Apple Inc. Cupertino, CA 95014 (US)

(72) Inventors: GULGUNJE, Prabhakar Cupertino, CA 95014 (US) MEDOWER, Brian S. Cupertino, CA 95014 (US) ORSAN, Mahmut C. Cupertino, CA 95014 (US) GUPTA, Nathan K. Cupertino, CA 95014 (US) XU, Shifa Cupertino, CA 95014 (US) MAJUMDAR, Shubhaditya Cupertino, CA 95014 (US) LIN, Wei Cupertino, CA 95014 (US) ALNAHHAS, Yazan Z. Cupertino, CA 95014 (US) (74) Representative: Froud, Christopher Andrew  Withers & Rogers LLP 2 London Bridge London SE1 9RA London SE1 9RA (GB)