USE OF OPTICAL FOURIER TRANSFORM FOR DIMENSIONAL CONTROL IN MICROELECTRONICS
摘要
The invention concerns a device for measuring dimensional or structural characteristics of an object, comprising: means (2) for forming an image of the optical Fourier transform of an elementary surface of the object in the image focal plane; processing means (26) for producing data concerning at least one dimensional and/or structural characteristic of the object based on the data supplied by the detecting means.
申请公布号
WO2005026707(A3)
申请公布日期
2005.06.09
申请号
WO2004FR50443
申请日期
2004.09.17
申请人
COMMISSARIAT A L'ENERGIE ATOMIQUE;PETIT, JEROME;CHATON, PATRICK;GRAND, GILLES;LEROUX, THIERRY