Lensing light curves with similar magnification. In the left panel, values of the outer radius a_o and the inclination angle i are changed in a way to keep the projected area of the disk fixed [﹩( a^{2}_{o}-a^{2}_{i}) \mathrm{cos}\,i=\mathrm{constant}\,﹩]. In the right panel, additional changes of the orientation angle φ₀ are made to match the duration time.