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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 9, Iss. 5 — Apr. 29, 2014

High-speed terahertz imaging toward food quality inspection

Gyeongsik Ok, Kisang Park, Hyun Jung Kim, Hyang Sook Chun, and Sung-Wook Choi  »View Author Affiliations


Applied Optics, Vol. 53, Issue 7, pp. 1406-1412 (2014)
http://dx.doi.org/10.1364/AO.53.001406


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Abstract

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

OCIS Codes
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Imaging Systems

History
Original Manuscript: December 6, 2013
Revised Manuscript: January 23, 2014
Manuscript Accepted: January 27, 2014
Published: February 27, 2014

Virtual Issues
Vol. 9, Iss. 5 Virtual Journal for Biomedical Optics

Citation
Gyeongsik Ok, Kisang Park, Hyun Jung Kim, Hyang Sook Chun, and Sung-Wook Choi, "High-speed terahertz imaging toward food quality inspection," Appl. Opt. 53, 1406-1412 (2014)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-53-7-1406


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