FIG. 1 is a perspective front View of a light bulb filament; FIG. 2 is a left side View thereof; FIG. 3 is a front View thereof; FIG. 4 is a right side View thereof; FIG. 5 is a rear View thereof; FIG. 6 is a top plan View thereof; FIG. 7 is a bottom plan View thereof; and, FIG. 8 is a perspective rear View thereof.