(19)

(11)

EP 3 983 845 A1

(12)

(43) Date of publication: 20.04.2022 Bulletin 2022/16 (21) Application number: 19734457.5 (22) Date of filing: 13.06.2019

(51) International Patent Classification (IPC):  G02C 7/16(2006.01) G02C 11/00(2006.01) (52) Cooperative Patent Classification (CPC): G02C 7/16; G02C 11/12 (86) International application number: PCT/GB2019/051643 (87) International publication number: WO 2020/249919 (17.12.2020 Gazette 2020/51)

(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 (71) Applicant: UK Optical Plastics Limited Leicester Leicestershire LE3 3DH (GB)	(72) Inventor: MESSIOU, Antoine Leicester Leicestershire LE3 3DH (GB) (74) Representative: Serjeants LLP  Dock 75 Exploration Drive Leicester, LE4 5NU Leicester, LE4 5NU (GB)