Gyeongsik Ok, Kisang Park
received 12/06/2013; accepted 01/27/2014;
posted 01/28/2014; Doc. ID 202672
In contrast to conventional X-ray food inspection systems that have difficulty detecting low-density materials, a terahertz (THz) imaging system can even identify insects and plastics embedded in a food matrix. A reflection mode continuous-wave THz imaging system was therefore developed for application in food quality inspection, which requires fast, compact, and low-cost detection. High-speed operation of the THz imaging system was achieved through the use of a beam-steering tool. A reasonable compromise between the spatial resolution and the scan length of an aspheric f-theta scanning lens could be achieved by optimizing the lens parameters.
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