Konveksläätsa

Konveksläätsa, known in English as a convex lens, is a lens that is curved outward on at least one side. This outward curvature causes parallel rays of light to converge at a focal point. Convex lenses are thicker in the middle than at the edges. They are used to magnify objects, as seen in magnifying glasses, or to focus light in optical instruments such as cameras and telescopes. The power of a convex lens is measured in diopters and is inversely proportional to its focal length. A shorter focal length indicates a stronger lens, meaning it bends light more significantly. The image formed by a convex lens can be real or virtual, depending on the position of the object relative to the lens. When an object is placed beyond the focal point, a real, inverted image is formed. If the object is placed within the focal point, a virtual, upright, and magnified image is produced.