(19)

(11)

EP 3 058 417 A1

(12)

(43) Date of publication: 24.08.2016 Bulletin 2016/34 (21) Application number: 14853675.8 (22) Date of filing: 10.10.2014

(51) International Patent Classification (IPC):  G02B 27/01(2006.01) (86) International application number: PCT/US2014/060020 (87) International publication number: WO 2015/057507 (23.04.2015 Gazette 2015/16)

(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: 15.10.2013 US 201361961446 P 01.05.2014 US 201414267325 (71) Applicant: Castar, Inc. Palo Alto, CA 94306 (US)	(72) Inventor: ELLSWORTH, Jeri J. Kirkland, WA 98034 (US) (74) Representative: Browne, Robin Forsythe et al Hepworth Browne 15 St Paul's Street Leeds LS1 2JG Leeds LS1 2JG (GB)