(19)
(11) EP 1 175 633 A1

(12)

(43) Date of publication:
30.01.2002 Bulletin 2002/05

(21) Application number: 00919336.8

(22) Date of filing: 25.02.2000
(51) International Patent Classification (IPC)7G02B 6/42, F21V 8/00
(86) International application number:
PCT/US0004/700
(87) International publication number:
WO 0067/057 (09.11.2000 Gazette 2000/45)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 30.04.1999 US 302950

(71) Applicant: COGENT LIGHT TECHNOLOGIES, INC.
Santa Clarita, CA 91355-1137 (US)

(72) Inventors:
  • LI, Kenneth, K.
    Arcadia, CA 91006 (US)
  • BRENNER, Douglas, M.
    Los Angeles, CA 90024 (US)
  • CHEN, Chingfa
    Diamond Bar, CA 91765 (US)

(74) Representative: Kaminski, Susanne, Dr. 
Büchel, Kaminski & Partner Patentanwälte Est., Letzanaweg 25-27
9495 Triesen
9495 Triesen (LI)

   


(54) IMPROVED COUPLING OF LIGHT FROM A SMALL ARC LAMP TO A LARGER TARGET