| 摘要 |
The right headlamp in a four-lamp type headlamp system is provided in such a manner that its lamp having a discharge bulb which is on the outside as viewed in the direction of width of the vehicle body is positioned at the corner of the front of the vehicle body, and the configuration of the surface of the lens is a curved surface which is curved backwardly and outwardly as viewed in the direction of width of the vehicle body. Furthermore, at the outermost end, as viewed in the direction of width of the vehicle body, of the lens surface, the horizontal component of the normal thereat is inclined at an angle (=about 70°) outwardly as viewed in the direction of width of the vehicle body with respect to the axial line in the front-to-rear direction of the vehicle body. Hence, the sideward open angle can be set to a large value which the straight line connecting the light emitting section of the discharge bulb to the outermost end, as viewed in the direction of width of the vehicle body, of the lens forms with the axial line in the front-to-rear direction of the vehicle body, whereby the direct light beam from the discharge bulb is applied sidewardly of the vehicle, to allow the driver to positively observe, for instance, a shoulder of the road. |
