Title :
Fast active THz-camera with global illumination
Author :
Weg, C. Am ; Spiegel, W.V. ; Senzel, F. ; Henneberger, R. ; Zimmermann, R. ; Löffler, T. ; Roskos, H.G.
Author_Institution :
Phys. Inst., Johann Wolfgang Goethe-Univ., Frankfurt, Germany
Abstract :
We present a fast-scanning active THz-camera with two different illumination techniques. The first uses local illumination and offers high dynamic range while the second uses global illumination and allows to expand the range of angles over which specular reflections are detected. Furthermore, the second approach holds the promise that the object topography can be resolved with larger uniqueness.
Keywords :
lighting; terahertz wave devices; terahertz wave imaging; fast-scanning active THz-camera; global illumination; local illumination; object topography; specular reflections; Dynamic range; Focusing; Lenses; Lighting; Mirrors; Optical reflection; Optical scattering; Radiation detectors; Surfaces; Telescopes;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5325550
