EP 1010042 A1 20000621 - SYSTEM AND METHOD FOR THREE-DIMENSIONAL IMAGING
Title (en)
SYSTEM AND METHOD FOR THREE-DIMENSIONAL IMAGING
Title (de)
VORRICHTUNG UND VERFAHREN ZUR DREIDIMENSIONALEN BILDERZEUGUNG
Title (fr)
SYSTEME ET PROCEDE D'IMAGERIE EN TROIS DIMENSIONS
Publication
Application
Priority
US 9715447 W 19970903
Abstract (en)
[origin: WO9912079A1] A system and method for three-dimensional imaging utilize a lens (34) to perform a two-dimensional Fourier transform of an interference pattern while focusing the pattern on a two-dimensional detector array (40) which is positioned in the image plane (38) of the lens. This allows immediate previewing of the imaged object for proper positioning. Coherent energy beams are utilized to create a series of interference patterns, or image-plane holograms, each at a different frequency of the source energy beams. Furthermore, at each frequency, the relative phase between an object and a reference energy beam is varied to capture the complex values associated with the interference patterns. After capturing and storing the various interference patterns, a computer (42) performs a one-dimensional Fourier transform, or other simplified processing to generate the three-dimensional image of the object. The image resolution extends to the micron range making this system and method easily adaptable to a variety of three-dimensional inspection applications.
IPC 1-7
IPC 8 full level
G01B 11/24 (2006.01); G03H 1/16 (2006.01); G03H 1/22 (2006.01); G06T 1/00 (2006.01); H04N 13/02 (2006.01)
CPC (source: EP)
G03H 1/0443 (2013.01); G03H 1/08 (2013.01); G03H 1/0406 (2013.01); G03H 3/00 (2013.01); G03H 2001/0033 (2013.01); G03H 2001/0447 (2013.01); G03H 2001/0458 (2013.01); G03H 2001/0469 (2013.01); G03H 2001/0471 (2013.01); G03H 2222/13 (2013.01); G03H 2226/11 (2013.01)
Citation (search report)
See references of WO 9912079A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9912079 A1 19990311; AU 4177397 A 19990322; EP 1010042 A1 20000621; JP 2001515227 A 20010918
DOCDB simple family (application)
US 9715447 W 19970903; AU 4177397 A 19970903; EP 97939753 A 19970903; JP 2000509018 A 19970903