Optical coatings are thin layers of material applied to the surface of lenses, mirrors, and other optical components to enhance their performance. These coatings can improve light transmission, reduce reflections, and protect surfaces from scratches and environmental damage. Common types of optical coatings include anti-reflective coatings, which minimize glare, and reflective coatings, which enhance the brightness of images. The application of optical coatings is crucial in various fields, including photography, telecommunications, and medical imaging. By optimizing how light interacts with surfaces, these coatings help improve the quality and efficiency of optical devices, making them essential in modern technology.