Example of microlensing light curve for a saddle-point image (with κ_∗ = 0.07). The microlensing-induced flux variations (in mag) as a function of time are displayed for a source with L_bol = 10^44.2 erg/s, and a compact torus model. The microlensing event duration scales with the inverse of the net transverse velocity v_t expressed in Einstein radius/year. The upper panel shows a portion of the microlensing map from where the light curve is extracted. Blue (dark) region correspond to demagnification and green (light) region to magnification. The other panels show the light curve for the accretion disc (AD), for the torus, and for the composite source (AD+torus). The results are presented for three different wavelengths, 1 μm (light blue), 2.2 μm (light green), and 4.4 μm (red). Note that the torus model is the same for each wavelength.