(19)

(11)

EP 4 052 246 A1

(12)

(43) Date of publication: 07.09.2022 Bulletin 2022/36 (21) Application number: 21705579.7 (22) Date of filing: 05.02.2021

(51) International Patent Classification (IPC):  G09G 3/00(2006.01) G02B 27/00(2006.01) (52) Cooperative Patent Classification (CPC): G09G 2340/0457; G09G 2340/0464; G09G 2340/0407; G09G 2354/00; G09G 2340/0435; G09G 3/007; G09G 3/003; G02B 27/0093; G02B 2027/0187; G02B 2027/0138; G02B 2027/014; G02B 27/0172 (86) International application number: PCT/FI2021/050082 (87) International publication number: WO 2021/156547 (12.08.2021 Gazette 2021/32)

(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: 06.02.2020 US 202016783557 03.02.2021 WO PCT/FI2021/050073 04.02.2021 US 202117167151 (71) Applicant: Varjo Technologies Oy 00100 Helsinki (FI)	(72) Inventors: MELAKARI, Klaus 02140 Espoo (FI) SAHLSTEN, Oiva 24280 Salo (FI) (74) Representative: Aaltonen, Janne Lari Antero  Moosedog Oy Vähäheikkiläntie 56 C 20810 Turku 20810 Turku (FI)