(19)

(11)

EP 2 534 407 A2

(12)

(88) Date of publication A3: 06.10.2011 (43) Date of publication: 19.12.2012 Bulletin 2012/51 (21) Application number: 11706068.1 (22) Date of filing: 08.02.2011

(51) International Patent Classification (IPC):  F21K 99/00(2010.01) (86) International application number: PCT/US2011/024006 (87) International publication number: WO 2011/100224 (18.08.2011 Gazette 2011/33)

(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 (30) Priority: 12.02.2010 US 704995 14.06.2010 US 354373 P 11.03.2010 US 312918 P 28.02.2010 US 308979 P 02.06.2010 US 350733 P (71) Applicant: Cree, Inc. Durham, NC 27703 (US)	(72) Inventors: VAN DE VEN, Antony, Paul Hong Kong Sar (CN) THIEKEN, Paul Raleigh NC 27613 (US) (74) Representative: Gemmell, Peter Alan et al Dummett Copp LLP 25 The Square Martlesham Heath Ipswich IP5 3SL Martlesham Heath Ipswich IP5 3SL (GB)