(19)

(11)

EP 1 842 095 A2

(12)

(88) Date of publication A3: 01.03.2007 (43) Date of publication: 10.10.2007 Bulletin 2007/41 (21) Application number: 05855789.3 (22) Date of filing: 29.12.2005

(51) International Patent Classification (IPC):  G02B 26/08(2006.01) G02B 21/36(2006.01) G02B 21/06(2006.01) (86) International application number: PCT/US2005/047287 (87) International publication number: WO 2006/081031 (03.08.2006 Gazette 2006/31)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 27.01.2005 US 647572 P (71) Applicant: RENSSELAER POLYTECHNIC INSTITUTE Troy New York 12180 (US)	(72) Inventors: POTSAID, Benjamin, Michael Troy, New York 12180 (US) BELLOUARD, Yves Albany, New York 12203 (US) WEN, John, T. Troy, New York 12180 (US) (74) Representative: Wilson Gunn  5th Floor Blackfriars House The Parsonage Manchester M3 2JA Manchester M3 2JA (GB)