Fiber-optic conversion module

摘要

A fiber-optic conversion module is provided as part of a lighting device on a vehicle. The module includes optical fibers with connectors, a light exit head, and a converter mounted on a cooling element. Shorter wavelength excitation light is fed to the optical fibers that emit the excitation light towards the converter arranged at an angle relative to the beam direction, at a light spot that remits useful light in a radiation angle in form of a cone of useful light and reflects excitation light as a Fresnel reflection substantially outside the cone of useful light, where Fresnel reflection is made harmless by a light stop.

主权项

1. A fiber-optic conversion module, comprising:
at least one optical fiber having a light input end adapted for being connected to an associated excitation light source and a light exit end adapted for emitting excitation light to a light spot in a predetermined beam direction; a converter arranged at an angle relative to the predetermined beam direction and used for converting shorter wavelength excitation light from the associated excitation light source into longer wavelength converted light and for emitting mixed useful light emanating from the light spot and spreading into a region of a useful radiation angle with a part of the excitation light being reflected at the converter into a region outside the useful radiation angle; a light exit head for supporting the light exit end of the at least one optical fiber and the converter; a cooling element for accommodating the converter in a heat conductive and mechanically stable connection with the light exit head; and an exit window for useful light provided with a light stop for excitation light directly reflected at the converter outside the region of the useful radiation angle of the useful light.