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

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

Llombart, Nuria (TU Delft Tera-Hertz Sensing)
Gandini, E. (TU Delft Tera-Hertz Sensing)
Tamminen, A. (Asqella Oy)
Luukanen, A. (Asqella Oy)

2016-09-01

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).

Lenses
Detectors
optical imaging
Optical losses
Security
Optical receivers

http://resolver.tudelft.nl/uuid:e66f1fa5-ef43-4cc0-a1bc-f99749f388ac

https://doi.org/10.1109/IRMMW-THz.2016.7758592

IEEE, Piscataway, NJ

978-1-4673-8485-8

41st International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz

IRMMW-THz 2016, 2016-09-25 → 2016-09-30, Bella Center, Copenhagen, Denmark

Accepted Author Manuscript

Institutional Repository

conference paper

© 2016 Nuria Llombart, E. Gandini, A. Tamminen, A. Luukanen