The invention relates to a lens which has an extended range of focus, wherein the lens consists of a solid material, the optical surfaces of the lens are transparent and the lens has a focal power distribution. According to the invention, the focal power distribution FG of the lens (1), in relation to a plane perpendicular to the optical axis (10), changes as a function of the radial height r and of the azimuth angle phi of the aperture between a base value of the focal power FL not equal to zero and a maximum value FSmax. Hence, the focal power distribution emerges asFG(r,phi)=FL+FS(r,phi),with the spiral focal power componentFS(r,phi)=FSmax(r)*w(phi),where FSmax(r) depends nonlinearly on the radius and w(phi) is a factor for the focal power component with a spiral profile.
