FIG. 1 is a front perspective view from above of a desk light, showing my new design; FIG. 2 is a front elevation view thereof; FIG. 3 is a right side view thereof; FIG. 4 is a left side view thereof; FIG. 5 is a top plan view thereof; FIG. 6 is a bottom plan view thereof; and, FIG. 7 is a rear perspective view thereof.