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Proceedings Paper

Spot shape and size on the focal plane of specific infrared nonimaging sensors for the detection of forest fires
Author(s): Fernando Lopez; Antonio J. de Castro; Jose Manuel Aranda; Juan Melendez; Marta Ugarte; Jesus Meneses; Susana Briz
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Paper Abstract

This paper describes some of the work performed in the course of the design and development of a new IR sensor system for early detection of forest fires. The proposed device is a non- imaging sensor that would discriminate angular position by means of a simple IR array, working in the 3 - 5 microns wavelength region, placed at the focal plane of the optical system. In order to accomplish low cost requirements, a system with a sole IR lens has been designed. In this work, a study of the spot shape, size and optical IR power on the detector has been performed. From the analysis of the influence of lens-detector distance and incidence angle, we have derived an optimum pixel size and optical configuration. The use of TE- cooled PbSe detectors is proposed, as well as a simplified cell array.

Paper Details

Date Published: 26 October 1998
PDF: 12 pages
Proc. SPIE 3436, Infrared Technology and Applications XXIV, (26 October 1998); doi: 10.1117/12.327996
Show Author Affiliations
Fernando Lopez, Univ. Carlos III de Madrid (Spain)
Antonio J. de Castro, Univ. Carlos III de Madrid (Spain)
Jose Manuel Aranda, Univ. Carlos III de Madrid (Spain)
Juan Melendez, Univ. Carlos III de Madrid (Spain)
Marta Ugarte, Univ. Carlos III de Madrid (Spain)
Jesus Meneses, Univ. Carlos III de Madrid (Spain)
Susana Briz, Univ. Carlos III de Madrid (Spain)


Published in SPIE Proceedings Vol. 3436:
Infrared Technology and Applications XXIV
Bjorn F. Andresen; Marija Strojnik, Editor(s)

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