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Proceedings Paper

Assessment of an optically stimulated infrared emission from image intensifier tube photocathodes
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Paper Abstract

Anecdotal evidence suggested that bright, night-vision imaging system (NVIS) compatible, green cockpit displays could cause a veiling luminance in night-vision goggles (NVGs) and degrade visual performance. The mechanism suspected of causing this veiling luminance was an infrared emission from the image intensifier tube photocathode stimulated by visible, NVIS compatible light. This paper describes an effort to measure this stimulated infrared emission from three different image intensifier tubes. Measurements of the emission were analyzed with respect to tube age, the wavelength of incident illumination, and illumination angle of incidence. The emission was found during certain combinations of light wavelengths, angles, and intensities. However, results suggest that this phenomenon is not sufficiently strong to cause observable veiling luminance in NVGs.

Paper Details

Date Published: 19 May 2005
PDF: 10 pages
Proc. SPIE 5800, Helmet- and Head-Mounted Displays X: Technologies and Applications, (19 May 2005); doi: 10.1117/12.608731
Show Author Affiliations
Jesse G. Wales, Air Force Research Lab. (United States)
Peter L. Marasco, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 5800:
Helmet- and Head-Mounted Displays X: Technologies and Applications
Clarence E. Rash; Colin E. Reese, Editor(s)

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