Abstract-High-speed terahertz imaging toward food quality inspection

Gyeongsik Ok, Kisang Park, Hyun Jung Kim, Hyang Sook Chun, and Sung-Wook Choi  
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Applied Optics, Vol. 53, Issue 7, pp. 1406-1412 (2014)
http://dx.doi.org/10.1364/AO.53.001406

http://www.opticsinfobase.org/ao/abstract.cfm?uri=ao-53-7-1406

In contrast to conventional x-ray food inspection systems that have difficulty in detecting low-density materials, a terahertz imaging system can even identify insects and plastics embedded in a food matrix. A reflection-mode continuous-wave terahertz imaging system was therefore developed for application to food quality inspection, which requires fast, compact, and low-cost detection. High-speed operation of the terahertz 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.

© 2014 Optical Society of America