Composite reflecting mirror for headlamp

摘要

A composite reflecting mirror for a headlamp comprises a plurality of paraboloidal columnar reflecting surfaces, the reflecting surfaces having their respective focal points fall on a horizontal line extending through approximately the axis of symmetry of the mirror. The composite reflecting mirror is laterally substantially divided into three portions, i.e., a left end portion, a right end portion and a central portion. The relationship of the average value of the focal lengths of the plurality of paraboloidal columnar reflecting surfaces included in the respective portions is such that the average value of the focal lengths of the left end portion is greater than that of the central portion, and the average value of the focal lengths of the right end portion is greater than that of the central portion.