Anti-reflective coatings are thin layers applied to lenses, screens, and other surfaces to reduce glare and reflections. These coatings work by minimizing the amount of light that bounces off the surface, allowing more light to pass through. This enhances visibility and improves the clarity of images, making them particularly useful for glasses, camera lenses, and electronic displays. The technology behind anti-reflective coatings involves the use of multiple layers of materials with different refractive indices. This design helps to cancel out reflections at specific wavelengths of light. Common applications include eyewear, smartphones, and television screens, where improved visibility is essential.