Vehicle headlight and optical fiber bundle used in vehicle headlight

摘要

An optical fiber bundle is used in a vehicle headlight, the optical fiber bundle being configured by binding a plurality of optical fibers. Each optical fiber can include a core having an incident end face on which a laser beam is made incident and an emission end face from which the laser beam is emitted. A clad can surround the core. Emission end faces of the respective plurality of optical fibers can be arranged adjacent to one another on a substantially same plane to create an emission end face group, an external shape of which is a substantial rectangle.

主权项

1. A vehicle headlight comprising:
a plurality of laser beam sources; an optical fiber bundle including a plurality of optical fibers, the plurality of optical fibers respectively corresponding to the plurality of laser beam sources, each respective optical fiber including a core having an incident end face configured such that a laser beam emitted from a respective laser beam source of the plurality of laser beam sources is incident on the incident end face, and the core also having an emission end face configured to emit the laser beam previously incident on the incident end face, and each optical fiber including a clad located adjacent the core; a wavelength conversion member configured to receive the laser beam emitted from the emission end face and to convert at least a part of the laser beam into light having a wavelength different from a wavelength of the laser beam; and an optical system configured to project a light source image of the wavelength conversion member and form a predetermined light distribution pattern, wherein emission end faces of the respective plurality of optical fibers are located adjacent to one another on a substantially same plane to form an emission end face group, and an external shape of the emission end face group is a substantial rectangle, the wavelength conversion member is located adjacent the emission end face group, an external shape of the wavelength conversion member is substantially the same as the external shape of the emission end face group, and the wavelength conversion member is located on the emission end face group in a state in which the external shape of the wavelength conversion member and the external shape of the emission end face group substantially coincide with each other and the wavelength conversion member covers emission end faces of the emission end face group.