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EP 4 199 975 A1

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(43) Date of publication: 28.06.2023 Bulletin 2023/26 (21) Application number: 21911776.9 (22) Date of filing: 23.08.2021

(51) International Patent Classification (IPC):  A61L 2/10(2006.01) H01S 3/225(2006.01) A61L 9/20(2006.01) (52) Cooperative Patent Classification (CPC): A61L 2/10; A61L 2202/11; G02B 5/283; H01J 61/305; H01J 65/046 (86) International application number: PCT/US2021/047212 (87) International publication number: WO 2022/139887 (30.06.2022 Gazette 2022/26)

(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: 24.08.2020 US 202063069436 P 26.10.2020 US 202017080390 22.01.2021 US 202117156426 05.03.2021 US 202117193839 04.05.2021 US 202163183937 P (71) Applicant: Lumenlabs LLC Poway, CA 92064 (US)

(72) Inventors: BAXTER, Kevin, C. Tulsa, OK 74107 (US) CAO, Wei Shanghai (CN) SHI, Min Shanghai (CN) (74) Representative: Script IP Limited  Suite J, Anchor House School Close Chandlers Ford Eastleigh, Hampshire SO53 4DY Eastleigh, Hampshire SO53 4DY (GB)