(19)

(11)

EP 2 917 783 A2

(12)

(88) Date of publication A3: 24.07.2014 (43) Date of publication: 16.09.2015 Bulletin 2015/38 (21) Application number: 13852445.9 (22) Date of filing: 08.11.2013

(51) International Patent Classification (IPC):  G03B 3/10(2006.01) (86) International application number: PCT/IB2013/002905 (87) International publication number: WO 2014/072818 (15.05.2014 Gazette 2014/20)

(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 (30) Priority: 08.11.2012 US 201261724221 P 05.09.2013 US 201361874333 P (71) Applicant: Dynaoptics Pte Ltd. Singapore 608586 (SG)	(72) Inventors: CHEO, Koon, Lin Singapore 310201 (SG) HOU, Chang, Lun Singapore 650507 (SG) (74) Representative: Freeman, Jacqueline Carol  WP Thompson 55 Drury Lane London WC2B 5SQ London WC2B 5SQ (GB)