Share Email Print
cover

Proceedings Paper

Multispectral glass transparent from visible to thermal infrared
Author(s): A. Brehault; L. Calvez; T. Pain; P. Adam; J. Rollin; X. H. Zhang
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The thermal imaging market has experienced a strong growth during the recent years due to continued cost reduction of night vision devices. The development of uncooled focal plane detector arrays is the major reason for the cost reduction. Another reason is the continuous improvement of the optical solution. In this paper, we present a new multispectral material which responds to the increasing demand for optics operating simultaneously in the visible/SWIR (Short Wave InfraRed) and the thermal infrared region. The most important properties of some glasses from the GeS2-Ga2S3- CsCl system are highlighted in this study. A stable composition 15Ga2S3-75GeS2-10CsCl allowed the synthesis of a large glass without crystallization. The refractive index of this glass was precisely measured from 0.6 to 10.4μm by using the Littrow method. The chromatic dispersion was then calculated and compared with other multispectral materials.

Paper Details

Date Published: 24 June 2014
PDF: 12 pages
Proc. SPIE 9070, Infrared Technology and Applications XL, 90702F (24 June 2014); doi: 10.1117/12.2048319
Show Author Affiliations
A. Brehault, Lab. of Glasses and Ceramics, CNRS, Univ. de Rennes 1 (France)
L. Calvez, Lab. of Glasses and Ceramics, CNRS, Univ. de Rennes 1 (France)
T. Pain, Lab. of Glasses and Ceramics, CNRS, Univ. de Rennes 1 (France)
P. Adam, DGA/DS - Mission pour la Recherche et l’Innovation Scientifique (France)
J. Rollin, Thales Angénieux S.A. (France)
X. H. Zhang, Lab. of Glasses and Ceramics, CNRS, Univ. de Rennes 1 (France)


Published in SPIE Proceedings Vol. 9070:
Infrared Technology and Applications XL
Bjørn F. Andresen; Gabor F. Fulop; Charles M. Hanson; Paul R. Norton, Editor(s)

© SPIE. Terms of Use
Back to Top