Title :
Real-Time THz Imaging of Large Objects based on the Triangulation Method
Author :
Herrmann, M. ; Beigang, R.
Author_Institution :
Fraunhofer Inst. for Phys. Meas. Tech., Kaiserslautern
Abstract :
We have built a THz Imaging setup for large objects where "large" is defined as "too big to fit on an optical table". THz radiation is focused on the object, and the radiation reflected or scattered under a finite angle is recorded with a CCD camera via EO sampling in real time. If an object has multiple reflecting or scattering surfaces, all of them cause different THz spots on the EO crystal, and the position of such a spot immediately reveals the 3D position of the illuminated area on the respective surface.
Keywords :
CCD image sensors; submillimetre wave imaging; CCD camera; EO crystal; EO sampling; real-time THz imaging; scattering surfaces; triangulation method; Charge coupled devices; Laser beams; Laser excitation; Mirrors; Object detection; Optical imaging; Optical refraction; Optical scattering; Optical variables control; Ultrafast optics;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0400-2
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368399
