(19)

(11)

EP 0 772 891 A1

(12)

(43) Date of publication: 14.05.1997 Bulletin 1997/20 (21) Application number: 95926677.0 (22) Date of filing: 13.07.1995

(51) International Patent Classification (IPC):  G01B 17/ 00( . ) B06B 1/ 06( . ) G01S 7/ 521( . ) H01L 41/ 08( . ) A61B 8/ 00( . ) G01B 17/ 06( . ) G06T 1/ 00( . ) (86) International application number: PCT/US1995/008796 (87) International publication number: WO 1996/003777 (08.02.1996 Gazette 1996/07)

(84) Designated Contracting States: DE NL (30) Priority: 22.07.1994 US 19940278753 (71) Applicants: Loral Infrared & Imaging Systems, Inc. Lexington, MA 02173 (US) Lasser, Marvin E. Potomac, MD 20854 (US)	(72) Inventors: LASSER, Marvin, E. Potomac, MD 20854 (US) BUTLER, Neal, R. Acton, MA 01720 (US) (74) Representative: MacGregor, Gordon, et al  ERIC POTTER CLARKSON St. Mary's Court St. Mary's Gate Nottingham, NG1 1LE Nottingham, NG1 1LE (GB)