(19)

(11)

EP 4 505 247 A1

(12)

(43) Date of publication: 12.02.2025 Bulletin 2025/07 (21) Application number: 23715330.9 (22) Date of filing: 15.03.2023

(51) International Patent Classification (IPC):  G02F 1/37(2006.01) H01S 3/00(2006.01) G02F 1/39(2006.01) (52) Cooperative Patent Classification (CPC): G02F 1/37; G02F 1/39 (86) International application number: PCT/US2023/015249 (87) International publication number: WO 2023/196091 (12.10.2023 Gazette 2023/41)

(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: 08.04.2022 US 202263362729 P 27.05.2022 US 202217804368 (71) Applicant: Microsoft Technology Licensing, LLC Redmond, WA 98052-6399 (US)

(72) Inventors: BLACK, Richard John Redmond, Washington 98052-6399 (US) DREVINSKAS, Rokas Redmond, Washington 98052-6399 (US) ANDERSON, Patrick Neil Redmond, Washington 98052-6399 (US) SAKAKURA, Masaaki Redmond, Washington 98052-6399 (US) DR WINKLER, Thomas Torsten Redmond, Washington 98052-6399 (US) LARA SAUCEDO, David Redmond, Washington 98052-6399 (US) (74) Representative: Page White Farrer  Bedford House 21a John Street London WC1N 2BF London WC1N 2BF (GB)