(19)
(11) EP 3 949 692 A1

(12)

(43) Date of publication:
09.02.2022 Bulletin 2022/06

(21) Application number: 20723950.0

(22) Date of filing: 31.03.2020
(51) International Patent Classification (IPC): 
H05G 2/00(2006.01)
(52) Cooperative Patent Classification (CPC):
H05G 2/006; H05G 2/008
(86) International application number:
PCT/US2020/025998
(87) International publication number:
WO 2020/205883 (08.10.2020 Gazette 2020/41)
(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: 01.04.2019 US 201962827521 P

(71) Applicant: ASML Netherlands B.V.
5500 AH Veldhoven (NL)

(72) Inventors:
  • WANG, Haining
    San Diego, California 92127 (US)
  • DRIESSEN, Theodorus Wilhelmus
    San Diego, California 92127 (US)
  • SCHAFGANS, Alexander Anthony
    San Diego, California 92127 (US)
  • TREES, Dietmar Uwe Herbert
    San Diego, California 92127 (US)
  • BROWN, Daniel John William
    San Diego, California 92127 (US)
  • RAFAC, Robert Jay
    San Diego, California 92127 (US)

(74) Representative: ASML Netherlands B.V. 
Corporate Intellectual Property P.O. Box 324
5500 AH Veldhoven
5500 AH Veldhoven (NL)

   


(54) CONTROLLING CONVERSION EFFICIENCY IN AN EXTREME ULTRAVIOLET LIGHT SOURCE