(19)

(11)

EP 3 977 820 A1

(12)

(43) Date of publication: 06.04.2022 Bulletin 2022/14 (21) Application number: 20732087.0 (22) Date of filing: 27.05.2020

(51) International Patent Classification (IPC):  H05B 45/20(2020.01) H05B 47/19(2020.01) (52) Cooperative Patent Classification (CPC): H05B 47/19; H05B 45/20; H05B 45/30 (86) International application number: PCT/US2020/034751 (87) International publication number: WO 2020/243202 (03.12.2020 Gazette 2020/49)

(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: KH MA MD TN (30) Priority: 28.05.2019 US 201962853515 P 16.07.2019 US 201916513493 15.10.2019 EP 19203165 (71) Applicant: Lumileds LLC San Jose, CA 95131 (US)	(72) Inventor: QIU, Yifeng San Jose, California 95131 (US) (74) Representative: Beckord & Niedlich Patentanwälte PartG mbB  Marktplatz 17 83607 Holzkirchen 83607 Holzkirchen (DE)