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Proceedings Paper

The effect of the size of structural bulk inhomogeneities on the specular transmittance of polymer films
Author(s): Hermann H. Neidlinger
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Paper Abstract

This paper will be confined to the effect of optical inhomogeneities in polymer films on the scattering or specular transmittance of light. Potential causes for the presence of scattering entities in the bulk phase of polymers will be discussed. It will be shown that practical transmittance measurements are greatly influenced by the angular width of the instrument receptor aperture. The choice of larger receptor apertures will tend to include some of the scattering at small angles due to large inhomogeneities in the measurement of specular transmittance. As a consequence, the transmittance measured is not necessarily increased by reducing the size of the inhomogeneities in the polymer films, but there is a critical size when the specular transmittance is a minimum.

Paper Details

Date Published: 23 February 1987
PDF: 6 pages
Proc. SPIE 0692, Materials and Optics for Solar Energy Conversion and Advanced Lightning Technology, (23 February 1987); doi: 10.1117/12.936689
Show Author Affiliations
Hermann H. Neidlinger, Solar Energy Research Institute (United States)

Published in SPIE Proceedings Vol. 0692:
Materials and Optics for Solar Energy Conversion and Advanced Lightning Technology
Sandor Holly; Carl M. Lampert, Editor(s)

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