| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser welding method of an automobile light, and the automobile light obtained by using a method which can surely perform a laser welding process.SOLUTION: A manufacturing method of an automobile light welds a vessel body and a lens-shaped body by a laser emitting device. In a second light guide 64 in the lens-shaped body, there is arranged a wall which can satisfy a full-internal reflection condition with respect to at least one portion of laser radiation which is defined by at least one first lobe. Furthermore, first and second light guides 52, 64 are properly arranged with respect to each other so that at least the first lobe of the laser radiation coming from an emission part 60 of the first light guide 52 is sent to the second light guide 64 of the lens-shaped body. The vessel body roles as an absorbing member of an optical beam, and the lens-shaped body roles as a permeation member of the optical beam. |
