Article Abstracts | February 2008
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Accurate Transmission Measurements of Translucent Materials
The light scattering of translucent materials means that two sources are needed for the best transmission measurements.
by Alan Tirpak and Dr. Richard Young, Optronic Laboratories Inc.
Unlike transparent materials that transmit light with no appreciable attenuation or absorption, translucent materials often possess certain properties and physical structures that cause incident light to become scattered as it passes through, which poses some interesting challenges when attempting to measure the transmission of translucent materials.
Depending on the application, scattering may be an essential property of the samples being tested for transmission. This is especially important for optical diffuser manufacturers, who require highly uniform diffusing samples. Such uniformity is important in radiology or photography applications, for example, where colloidal silver particles cause scattering within the sample, and where regular transmission measurement setups are not applicable...
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