Lensing light curves of the disk. In each panel, one disk parameter is varied, as indicated at the top right corner, while the others are fixed at values listed at the top left corner. The y‐axis is the magnification. The disk parameters include the inner radius a_i, the outer radius a_o, the inclination angle i, the orientation angle of the projected major axis φ₀, the surface brightness profile index α, and the impact parameter u₀. Parameters with length dimension are in units of the Einstein ring radius.