Rosenberg, Klein & Lee
Imaging and measuring apparatus for surface and internal interface of object
The present invention provides an imaging and measuring apparatus for the surface and the internal interface of an object, which comprises a broadband wave source, a wave-splitting structure, a wave-delaying device, a reflecting component, and a sensor. The broadband wave source transmits a broadband incident wave. The wave-splitting structure splits the broadband incident wave into a first incident beam, a second incident beam, and a third incident beam. The first incident beam is illuminated on an object under test, which reflects a measuring beam. The wave-delaying device receives the second incident beam and reflects a reference beam. The reflecting component receives the third incident beam and reflects a calibration beam. The sensor receives a first interference signal of the measuring beam and the reference beam, and a second interference signal of the reference beam and the calibration beam. By means of the broadband incident wave, the morphologies of the surface and the internal interface of the object can be imaged and measured in a non-destructive way. In addition, by means of the calibration beam, the accuracy of imaging and measuring the surface and the internal interface of the object can be improved.
Chung Yuan Christian University
G
G01B
inventional
Chun-Wei I-Jen
Chang Hsu