Investigation of As40Se60 chalcogenide glass in precision glass molding for high-volume thermal imaging lenses

Jeremy Huddleston; Jacklyn Novak; William V. Moreshead; Alan Symmons; Edward Foote

doi:10.1117/12.2177026

26 May 2015 Investigation of As₄₀Se₆₀ chalcogenide glass in precision glass molding for high-volume thermal imaging lenses

Jeremy Huddleston, Jacklyn Novak, William V. Moreshead, Alan Symmons, Edward Foote

Author Affiliations +

Proceedings Volume 9451, Infrared Technology and Applications XLI; 94511O (2015) https://doi.org/10.1117/12.2177026
Event: SPIE Defense + Security, 2015, Baltimore, MD, United States

Abstract

The growing demand for thermal imaging sensors and cameras has focused attention on the need for larger volumes of lower cost optics in this infrared region. A major component of the cost of thermal imaging lenses is the germanium content. As₄₀Se₆₀ was developed as a moldable, germanium-free chalcogenide glass that can serve as a low cost alternative to germanium and other infrared materials. This material also has promising characteristics for improved optical performance, especially with regard to reduced thermal sensitivity. As₄₀Se₆₀ has found acceptance as a material to be diamond turned or polished, but it is only now emerging as a legitimate candidate for precision glass molding. This paper will review chalcogenide molding and characterize As₄₀Se₆₀ for widespread use in highvolume thermal imaging optics. The relative advantages and disadvantages of As₄₀Se₆₀ as compared to other chalcogenide glasses will also be discussed.

Citation Download Citation

Jeremy Huddleston, Jacklyn Novak, William V. Moreshead, Alan Symmons, and Edward Foote "Investigation of As₄₀Se₆₀ chalcogenide glass in precision glass molding for high-volume thermal imaging lenses", Proc. SPIE 9451, Infrared Technology and Applications XLI, 94511O (26 May 2015); https://doi.org/10.1117/12.2177026

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