![Optical Coatings](https://sciengineeredmaterials.com/wp-content/uploads/2019/12/OpticsMarketsRaw-1-scaled.jpg)
Optical coatings range in their uses from reducing glare, or filtering light of certain wavelengths. Polarized coatings change the refractive index, or how quickly light travels through a material. All of these techniques can be used together and in interesting ways to tune optical systems, whether that be sunglasses or spectrometers.