What are lenses typically made of?

Lenses are typically made of various materials, including glass, metal, and plastic components, which allows for a combination of optical clarity, durability, and versatility. Glass is commonly used for its excellent optical properties and scratch resistance, making it ideal for applications where clarity is paramount, such as in eyeglasses or camera lenses. Plastic, often lighter and more shatter-resistant than glass, is frequently used in everyday applications, including safety glasses and certain types of optical instruments. Additionally, metal components may be present in lens designs for structural support or mounting purposes. By incorporating these different materials, lenses are optimized for performance across a wide range of uses, ensuring that they meet the specific needs of the application in question.