| 摘要 |
<P>PROBLEM TO BE SOLVED: To restrain light distribution unevenness in case a low-beam light distribution pattern with a right-and-left unlevel cutoff lines are to be formed by a lamp tool unit of a projector type using a light-emitting diode as a light source. <P>SOLUTION: An upward reflective face 18a of a mirror member 18 for reflecting upward a part of reflected light from a reflector 16 is structured of a first horizontal face 18a1, a second horizontal face 18a2, and an intermediate slope 18a3. Then, a diffused reflection part 30 is formed at a position separated rearward from a front-end edge 18b of the reflective face 18a on the intermediate slope 18a3. In such a configuration, a light distribution pattern formed by light reflected at the intermediate slope 18a3 is formed so as to wedge in diagonally into two light distribution patterns formed by light reflected at the first and the second horizontal faces 18a1, 18a2, but each of these patterns is partially diffused by the diffused reflection part 30 to decrease its luminance and restrain generation of light distribution unevenness. <P>COPYRIGHT: (C)2009,JPO&INPIT |
