Wide Field of View Lens-Based Focusing System for Security Imagers at THz frequencies

Conference paper (2016)

Authors

Nuria Llombart Tera-Hertz Sensing - EEMCS
E. Gandini Tera-Hertz Sensing - EEMCS
Aleksi Tamminen Asqella Oy
Arttu Luukanen Asqella Oy
Research Group
Tera-Hertz Sensing (EEMCS) (TU Delft)
Copyright: © 2016 Nuria Llombart, E. Gandini, A. Tamminen, A. Luukanen
DOI: https://doi.org/10.1109/IRMMW-THz.2016.7758592
Security Lenses Optical losses Detectors Optical imaging Optical receivers
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Published Date

01-09-2016

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Tera-Hertz Sensing

Abstract

The aim of the European project CONSORTIS is the development of a walk-by imaging system for concealed object detections working at submillimetre-wave frequencies. This imager will allow to image a full body at two frequency bands with high sensitivity (<;1K) and large frame rate (10Hz). The imager relies on a large focal plane array with about 10k detectors operating at both bands coupled a common optical system. This contribution describes the optimization of the quasi-optical system for this imager. The proposed architecture is based on a novel flipped dual-lens design with a scan loss of less than 3dBs for both bands. This scan loss corresponds to resolution loss of only a factor 1.4 at the edge of the field of view (FoV).