PURPOSE: To generate no glare light without providing special means such as the improvement of machining precision or the intensification of selection by forming a reflecting mirror into a corrected reflecting surface increased with downward deflection toward the end sections of the horizontal side.

CONSTITUTION: The parameter curve T for determining the deflection angle quantity when the deflection angle is applied to reflecting surface shapes R0-R5 is determined with the axis X perpendicular to the optical axis Z used as a reference, and it is set as a quadratic curve against the straight distance to the axis X. The deflection angle applied to the shapes R0-R5 is increased in the quadratic curve as the distance from the optical axis Z is increased. The center axis U when the deflection angle is applied is perpendicular to the optical axis Z, and it is set as the horizontal line passing through the focal point F of a parabola Q or the position where a low beam filament is provided. The shapes R0-R5 are rotated downward with the center axis U serving as the rotating axis based on the deflection angle quantity obtained by the curve. Corrected reflectors V0-V5 having a stronger forward bend as the distance from the optical axis Z is increased are obtained.