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(11)

EP 4 172 692 A1

(12)

(43) Date of publication: 03.05.2023 Bulletin 2023/18 (21) Application number: 21833255.9 (22) Date of filing: 19.04.2021

(51) International Patent Classification (IPC):  G02F 1/29(2006.01) G02B 27/00(2006.01) G02B 3/00(2006.01) G02F 1/139(2006.01) (52) Cooperative Patent Classification (CPC): G02F 1/29; G02F 1/0121; G02B 5/32 (86) International application number: PCT/US2021/027986 (87) International publication number: WO 2022/005554 (06.01.2022 Gazette 2022/01)

(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: 30.06.2020 US 202016916731 21.08.2020 US 202016999815 09.12.2020 WO PCT/US2020/064071 (71) Applicants: Exciting Technology LLC Dayton, OH 45424 (US) Mcmanamon, Paul F. Dayton, OH 45424 (US) Ataei, Abtin Oakwood, OH 45419 (US)

(72) Inventors: MCMANAMON, Paul F. Dayton, Ohio 45424 (US) ATAEI, Abtin Oakwood, Ohio 45419 (US) (74) Representative: Marks & Clerk LLP  15 Fetter Lane London EC4A 1BW London EC4A 1BW (GB)