(19)

(11)

EP 1 692 460 A1

(12)

(43) Date of publication: 23.08.2006 Bulletin 2006/34 (21) Application number: 04800335.4 (22) Date of filing: 17.11.2004

(51) International Patent Classification (IPC):  G01B 11/30(2006.01) (86) International application number: PCT/SE2004/001672 (87) International publication number: WO 2005/047816 (26.05.2005 Gazette 2005/21)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 17.11.2003 SE 0303048 (71) Applicant: OPTONOVA AB 171 48 Solna (SE)	(72) Inventor: AHLEN, Hans S-113 56 Stockholm (SE) (74) Representative: Johansson Webjörn, Ingmari  Zacco Sweden AB, Box 23101 104 35 Stockholm 104 35 Stockholm (SE)