What are mirrors and lenses classified?

Mirrors and lenses are classified as optical devices that manipulate light. Mirrors reflect light, typically made of a glass surface coated with a reflective material, while lenses are transparent materials, usually glass or plastic, that refract light to focus or disperse it. They are further categorized based on their shapes: concave and convex for mirrors, and converging and diverging for lenses. Both play crucial roles in various applications, including imaging systems and optical instruments.