(19)
(11) EP 0 898 704 A1

(12)

(43) Date of publication:
03.03.1999 Bulletin 1999/09

(21) Application number: 98902696.0

(22) Date of filing: 23.01.1998
(51) International Patent Classification (IPC): 
G01N 23/ 201( . )
G01V 5/ 00( . )
G01N 23/ 04( . )
(86) International application number:
PCT/US1998/001299
(87) International publication number:
WO 1998/033062 (30.07.1998 Gazette 1998/30)
(84) Designated Contracting States:
AT BE DE ES FR GB GR IE IT NL SE

(30) Priority: 24.01.1997 RU 19970101221
08.04.1997 RU 19970105594

(71) Applicant: Quanta Vision, Inc.
San Mateo, CA 94402 (US)

(72) Inventors:
  • KOMARDIN, Oleg V.
    Moscow (RU)
  • LAWRENCE, Albert, F.
    Escondida, CA 92026 (US)
  • LAZAREV, Pavel, I.
    Menlo Park, CA 94025 (US)

(74) Representative: Freeman, Jacqueline Carol 
W.P. THOMPSON & CO. Celcon House 289-293 High Holborn
London WC1V 7HU
London WC1V 7HU (GB)

   


(54) INSPECTION EQUIPMENT USING SMALL-ANGLE TOPOGRAPHY IN DETERMINING AN OBJECT'S INTERNAL STRUCTURE AND COMPOSITION