20 January 1976 Integrating Sphere Performance In The 0.3 TO 8 /μm Spectral Region
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Abstract
Two integrating spheres have been developed to act as in interface between a monochromator and instru-ments under calibration. The spheres are designed to provide a diffuse, extended source and attenuate the signal sufficiently so as not to saturate sensitive instruments. One sphere is coated with a BaSO4 paint which provides a diffuse, highly reflecting surface in the 0.3 to 1.5μm spectral region. This sphere is operated at ambient temperatures. The second sphere is peened to create a diffuse surface and then is coated with copper to obtain a high reflectivity fran 1.5 to 8μm. The latter sphere is cooled to liquid nitrogen temperatures to eliminate self radiation in the spectral region of interest. Comparisons between observed spectral performance and theoretically predicted results are presented, and the gonianetric characteristics are described.
© (1976) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T. P. Condron, R. P. Heinisch, D. J. Lovell, "Integrating Sphere Performance In The 0.3 TO 8 /μm Spectral Region", Proc. SPIE 0062, Modern Utilization of Infrared Technology I, (20 January 1976); doi: 10.1117/12.954443; https://doi.org/10.1117/12.954443
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