Biconvex lens

A biconvex lens is a transparent piece of material, usually glass or plastic, with both sides curved outward like the exterior of a sphere. This shape causes light rays passing through it to converge or come together at a point, making the lens useful for magnifying objects or correcting vision. Biconvex lenses are common in cameras, microscopes, and eyeglasses, where they help focus light precisely. Their curved surfaces help control how light bends, enabling clear and magnified images to form.