Polymer based linear and circular Polarizers films, plastic filters and glass laminations. Our PVAL based techincal polarisers are a replacement for the discontinued Polaroid product for contrast enhancement, stress analysis, 3D projection systems etc., World leaders in the design and manufacture of emi-shielded windows, optical laminating, display filters, touch screens, privacy, anti-glare ... Table 1 shows measurement results of total light transmittance and total light reflectance for various plastic materials measured by the method referring to JIS K7375. By using the ø5 mm light source mask, the light beam was made into a circular shape. The transmission and reflectance spectra were measured in the visible region and the NIR Spectral transmission of Plastic filters Performance sunglasses transmission / exposure Safety analysis of a UV light source Solar Admittance of a Radome panel Solar Fresnel lens transmission / exposure Solar liquid & tube material transmission / exposure Spectral irradiance of Bilirubin light sourceBlack light UVA spectral irradiance Visible Light Reflection and Transmission. Reflection and transmission of light waves occur because the frequencies of the light waves do not match the natural frequencies of vibration of the objects. When light waves of these frequencies strike an object, the electrons in the atoms of the object begin vibrating.