| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a head lamp for a two-wheeler capable of ensuring the reliability by suppressing the effect of shocks and vibrations when the two-wheeler is traveling while the stability of the two-wheeler is excellent. <P>SOLUTION: An LED forms a light source 1, and an optical system is composed of two reflectors (a sub reflector 2 and a main reflector 3), and a lens 4. The LED light source 1 is mounted on a circuit substrate 5 and fitted to a heat sink 6. The sub reflector 2 has an elliptical reflective surface 2b with one focal point P1 being at the position of the light source 1. The main reflector 3 has a parabolic reflective surface 3b with its focal point being at the position of the other focal point P2 of the elliptical reflective surface 2b. <P>COPYRIGHT: (C)2009,JPO&INPIT |
