| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the visibility at a curve. SOLUTION: A diffusive light distribution pattern WP can be changed with respect to a fixed reference light distribution pattern LP by rotating a lower reflector 3 with respect to an upper reflector 2. As a result, the visibility at a curve can be improved. The predetermine reference light distribution pattern LP for low beam is formed by the upper reflector 2, and the diffusive light distribution pattern WP is formed by the lower reflector. As a result, the unused light can be distributed as the diffusive light distribution pattern WP to be effectively utilized without changing (reducing) the quantity of light of the reference light distribution pattern LP for low beam.</p> |
