Vehicular lamp and projection lens for decreasing an amount of blocked light

Abstract

A vehicular lamp that decreases the amount of light blocked by the extension towards the inside of the vehicle and increases the diffused light radiated toward the outside of the vehicle. The vehicular lamphas a projection lens, a light source, a reflectorhaving a reflecting surfacein which the light sourceacts as an approximate focal point and light from this light sourceis reflected toward the projection lens, a container-shaped body, and a coverthat along with the bodyforms a light chamber. The coverhas a horizontal cross-section that is slanted with respect to an imaginary linein the transverse direction of the vehicle, and the projection lenshas a rear side focal point f, the thickness of the lensdecreasing from the center portion toward the outer peripheral portions, and on the outer peripheral portions, a vehicular inside edge portion projects more toward the front side of the vehicle than the vehicular outside edge portion.