13 August 1993 Thermal properties of germanium and IR athermal optical design
Author Affiliations +
Abstract
Germanium is a material used widely in infra-red optics both in the 3 - 5 micrometers and 8 - 12 micrometers spectral regions. A useful property is its high refractive index, (> 4.0) which helps achieve low aberrations. However, it has several drawbacks, one of which is the relatively large dependence of the refractive index on temperature (dn/dT). This temperature dependence of the refractive index is discussed.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Steve Bloomberg, Steve Bloomberg, } "Thermal properties of germanium and IR athermal optical design", Proc. SPIE 1971, 8th Meeting on Optical Engineering in Israel: Optical Engineering and Remote Sensing, (13 August 1993); doi: 10.1117/12.151010; https://doi.org/10.1117/12.151010
PROCEEDINGS
8 PAGES


SHARE
RELATED CONTENT

Cryogenic refractive indices of S LAH55, S LAH55V, S LAH59,...
Proceedings of SPIE (September 02 2015)
Refractive index measurements of Ge
Proceedings of SPIE (September 19 2016)
The Design Of Athermal Infrared Optical Systems
Proceedings of SPIE (June 12 1989)
New design method for athermalized optical systems
Proceedings of SPIE (December 09 1992)
An optically passive athermal infrared optical system
Proceedings of SPIE (August 28 2008)

Back to Top