title: High-speed terahertz imaging toward food quality inspection.
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.
authors.forename: Gyeongsik
authors.initials: G
authors.lastname: Ok
authors.forename: Kisang
authors.initials: K
authors.lastname: Park
authors.forename: Hyun Jung
authors.initials: HJ
authors.lastname: Kim
authors.forename: Hyang Sook
authors.initials: HS
authors.lastname: Chun
authors.forename: Sung-Wook
authors.initials: SW
authors.lastname: Choi
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005504:Food Analysis / Q000295:instrumentation*; D005506:Food Contamination / Q000032:analysis*; D063427:Food Quality; D007909:Lenses; D055069:Terahertz Imaging / Q000295:instrumentation*