Title :
Measurement of spatial differentiation of displacement using a phase-shifting speckle shearing interferometer
Author :
Oshida, Y. ; Iwahashi, Y. ; Iwata, K.
Author_Institution :
Nara Nat. Coll. of Technol., Japan
Abstract :
A phase-shifting speckle shearing interferometer using a TV camera and a. computer to measure the spatial differentiated data. of the displacement is presented. In this method a spatial differentiation is achieved optically by the diffraction grating. This grating is also used,for phase-shifting. The distribution of the differentiated data is obtained accurately without contact with the object.
Keywords :
computerised instrumentation; differentiation; diffraction gratings; displacement measurement; light interferometers; phase shifting interferometry; speckle; television cameras; TV camera; diffraction grating; displacement spatial differentiation measurement; phase-shifting speckle shearing interferometer; spatial differentiated data; television camera; Adaptive optics; Cameras; Displacement measurement; Optical diffraction; Optical interferometry; Phase measurement; Phase shifting interferometry; Shearing; Speckle; TV;
Conference_Titel :
SICE 2002. Proceedings of the 41st SICE Annual Conference
Print_ISBN :
0-7803-7631-5
DOI :
10.1109/SICE.2002.1195811
