(19)

(11)

EP 0 671 016 A1

(12)

(43) Date of publication: 13.09.1995 Bulletin 1995/37 (21) Application number: 93916295.0 (22) Date of filing: 08.07.1993

(51) International Patent Classification (IPC):  G01S 17/ 32( . ) G01S 17/ 50( . ) (86) International application number: PCT/NL1993/000144 (87) International publication number: WO 1994/001788 (20.01.1994 Gazette 1994/03)

(84) Designated Contracting States: BE CH DE FR GB IT LI NL SE (30) Priority: 09.07.1992 NL 19920001233 (71) Applicant: B.V. Optische Industrie "De Oude Delft" NL-2612 XE Delft (NL)	(72) Inventor: VAN LOON, Jacob, Cornelis, Arend NL-2622 GL Delft (NL) (74) Representative: van der Burg, Louis  b.v. Optische Industrie De Oude Delft P.O. Box 72 NL-2600 MD Delft NL-2600 MD Delft (NL)