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Spectroscopy Configurations: Transmission and Reflection Systems
Reflection spectroscopy, or reflectance spectroscopy, is used to non-invasively characterize materials by comparing reflected light to the light source, revealing details like color and composition. For materials like filters, glass, or fluids that are more transparent, reflection measurements are ineffective due to low reflected light. In these cases, transmission spectroscopy is more suitable, measuring the light that passes through the material. This involves using a parallel light beam and collimating lenses with the object placed between them to capture transmitted light. Various light sources, accessories, fiber-optic probes, and spectrometers can be customized for specific applications in both reflection and transmission spectroscopy.