17 October 1994 Emissivity and reflectivity measurements of heated windows with a tunable laser
Author Affiliations +
Window heating effects are an important factor in development of missile seeker systems. Of specific concern are increases in window emissivity and reflectance as aerodynamic heating rapidly increases the window surface temperature. This paper describes a proposed experimental technique to measure window emissivity and reflectance over a temperature range from ambient to 350 degree(s)C and at spectral wavelengths in the 2.5 to 5.0 micron range. For this novel test setup the laser beam impinges on the infrared window sample at the Brewster angle to eliminate reflection losses so that remaining losses in laser intensity can be attributed to window emissivity. The proposed test procedures and laboratory equipment required to obtain these measurements are described in detail.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Edward F. Cross, Edward F. Cross, } "Emissivity and reflectivity measurements of heated windows with a tunable laser", Proc. SPIE 2269, Infrared Technology XX, (17 October 1994); doi: 10.1117/12.188680; https://doi.org/10.1117/12.188680


Reading a CD-ROM without a photodiode
Proceedings of SPIE (April 28 2016)
Narcissus, A Testing Tool
Proceedings of SPIE (October 20 1986)
Infrared Technology: Advances 1975-84, Challenges 1985-94
Proceedings of SPIE (January 21 1985)
Infrared reflectance and responsivity of PbBiSrCaCuO films
Proceedings of SPIE (October 17 1994)

Back to Top