optical lens

An optical lens is a transparent, curved piece of glass or plastic that bends (refracts) light rays to focus or spread them, forming clear images. Lenses are used in devices like glasses, microscopes, and cameras to correct vision or magnify objects. The shape of the lens determines how it bends light: convex lenses converge light to a point, making objects appear larger, while concave lenses spread light out, allowing us to see distant objects more clearly. Essentially, lenses manipulate light paths to enhance our view of the world.