(19)

(11)

EP 3 259 772 A1

(12)

(43) Date of publication: 27.12.2017 Bulletin 2017/52 (21) Application number: 15882841.8 (22) Date of filing: 19.02.2015

(51) International Patent Classification (IPC):  H01J 23/42(2006.01) (86) International application number: PCT/US2015/016461 (87) International publication number: WO 2016/133509 (25.08.2016 Gazette 2016/34)

(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 (71) Applicant: Calabazas Creek Research, Inc. San Mateo, California 94404 (US)	(72) Inventor: NEILSON, Jeffrey San Mateo, California 94404 (US) (74) Representative: Schneider, Andreas  Oberer Markt 26 92318 Neumarkt i.d.OPf. 92318 Neumarkt i.d.OPf. (DE)