(19)

(11)

EP 3 198 333 A1

(12)

(43) Date of publication: 02.08.2017 Bulletin 2017/31 (21) Application number: 15780779.3 (22) Date of filing: 23.09.2015

(51) International Patent Classification (IPC):  G02F 1/1335(2006.01) G02F 1/1334(2006.01) G02F 1/137(2006.01) (86) International application number: PCT/EP2015/071912 (87) International publication number: WO 2016/046285 (31.03.2016 Gazette 2016/13)

(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: MA (30) Priority: 24.09.2014 GB 201416851 (71) Applicant: Folium Optics Ltd Thornbury Bristol BS35 3UP (GB)	(72) Inventors: RUDIN, John Bristol, Bristol BS16 1QY (GB) KITSON, Stephen Bristol, Bristol BS16 1QY (GB) TAPHOUSE, Timothy Simon Bristol, Bristol BS16 1QY (GB) (74) Representative: Bryers LLP  7 Gay Street Bath, Bath and North East Somerset BA1 2PH Bath, Bath and North East Somerset BA1 2PH (GB)