Nanopowders, Thin Films, and Devices

Even though many of the packages used for consumer products are clear, seeing the product inside a clear box may still be challenging if light reflected from the container hinders the view. Anti-reflective coatings are used to reduce glare and to improve the transmission of light through the clear material by decreasing its reflectance. In the case of packaging, an anti-reflective, protective covering will allow more comprehensive inspection or presentation of the contents without having to tilt and move the product to accommodate light reflection. nGimat is developing low-cost, functional nanostructured coatings that provide anti-reflective surfaces to various substrates. To illustrate, the graphs below show the typical transmittance and reflectance spectra of bare glass and polycarbonate substrates and of glass and polycarbonate substrates coated with a CCVD anti-reflective coating. The CCVD-coated glass (coated one side only) has a transmittance of about 2% higher than that of bare glass, and a reflectance of about 2% lower than that of bare glass. The CCVD-coated polycarbonate (two sides coated) has a transmittance of about 5% higher than that of bare polycarbonate, and a reflectance of about 5% lower than that of bare polycarbonate. These results show that the CCVD films reduce reflection in the visible range. nGimat Home