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Proceedings Paper

Liquid explosive detection using near infrared LED
Author(s): Hideo Itozaki; Shiori Ito; Hideo Sato-Akaba; Yuji Miyato
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Paper Abstract

A bottle scanner to detect liquid explosive has been developed using technologies of near infrared. Its detection rate of liquid explosive is quite high and its false alarm rate of safe liquids quite low. It uses a light source with wide spectrum such as a halogen lamp. Recently a variety of LEDs have been developed and some of them have near infrared spectrum. Here a near infrared LED is tested as a light source of the liquid explosive detector. Three infrared LEDs that have a main peak of spectrum at 901nm, 936nm, and 1028 nm have been used as a light source to scan liquids. Spectrum widths of these LEDs are quite narrow typically less than 100 nm. Ten typical liquids have been evaluated by these LEDs and the correlation coefficients of a spectrum by an LED and a tungsten lamp were more than 0.98. This experiment shows that the infrared LED can be used as a light source for the liquid scanner. An LED has some merits, such as long life of more than some ten thousand hours and small consumption electric power of less than 0.2 W. When the LED is used as a light source for the liquid scanner, it is also more compact and handy.

Paper Details

Date Published: 21 October 2015
PDF: 5 pages
Proc. SPIE 9652, Optics and Photonics for Counterterrorism, Crime Fighting, and Defence XI; and Optical Materials and Biomaterials in Security and Defence Systems Technology XII, 965207 (21 October 2015); doi: 10.1117/12.2194658
Show Author Affiliations
Hideo Itozaki, Osaka Univ. (Japan)
Shiori Ito, Osaka Univ. (Japan)
Hideo Sato-Akaba, Osaka Univ. (Japan)
Yuji Miyato, Osaka Univ. (Japan)


Published in SPIE Proceedings Vol. 9652:
Optics and Photonics for Counterterrorism, Crime Fighting, and Defence XI; and Optical Materials and Biomaterials in Security and Defence Systems Technology XII
Roberto Zamboni; François Kajzar; Attila A. Szep; Douglas Burgess; Gari Owen; Harbinder Rana, Editor(s)

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