(19)

(11)

EP 1 546 779 A2

(12)

(88) Date of publication A3: 28.04.2005 (43) Date of publication: 29.06.2005 Bulletin 2005/26 (21) Application number: 03762098.6 (22) Date of filing: 27.06.2003

(51) International Patent Classification (IPC)7: G02B 6/34 (86) International application number: PCT/US2003/020237 (87) International publication number: WO 2004/003598 (08.01.2004 Gazette 2004/02)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 27.06.2002 US 392306 P 01.07.2002 US 393209 P (71) Applicant: BROWN UNIVERSITY RESEARCH FOUNDATION Providence, RI 02912 (US)	(72) Inventors: LEVNER, Daniel Toronto, Ontario M2R 3C7 (CA) FAY, Martin, F. Providence, RI 02906 (CA) XU, Jingming Providence, RI 02906 (US) (74) Representative: Parnham, Kevin et al Swindell & Pearson48 Friar Gate Derby DE1 1GY Derby DE1 1GY (GB)