(19)

(11)

EP 0 928 436 A1

(12)

(43) Date of publication: 14.07.1999 Bulletin 1999/28 (21) Application number: 97909934.0 (22) Date of filing: 29.09.1997

(51) International Patent Classification (IPC):  G02B 26/ 10( . ) H04N 13/ 00( . ) (86) International application number: PCT/US1997/017789 (87) International publication number: WO 1998/013720 (02.04.1998 Gazette 1998/13)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 27.09.1996 US 19960722278 (71) Applicant: Medcam, Inc. Bellvue, WA 98005 (US)	(72) Inventor: JOHNSON, Michael, D. Madison, AL 35738 (US) (74) Representative: Freiherr von Schorlemer, Reinfried, Dipl.-Phys.  Karthäuser Strasse 5A 34117 Kassel 34117 Kassel (DE)