concave lens

A concave lens is a type of optical lens that is curved inward, resembling a cave. It is thinner in the center and thicker at the edges. When light passes through a concave lens, it spreads out or diverges, which makes objects viewed through it appear smaller or farther away. Concave lenses are commonly used in various applications, such as eyeglasses for people with nearsightedness, cameras, and optical devices like microscopes. They help correct vision by allowing the eye to focus light correctly on the retina.