HIGH LUMINANCE SOLID STATE LIGHT SOURCE

摘要

The present invention relates to a solid-state light source comprising one or several laser diodes (1) emitting a laser beam with a first wavelength, a rotatable support (6) arranged in a beam path of the laser beam and a reflector (4) arranged between the laser diodes (1)and the rotatable support(6). The rotatable support(6) is formed of a ring or of an optically transparent disc mounted to be rotatable around a rotation axis(9) such that the laser beam impinges on a ring-shaped area (7) of the rotatable support(6) during rotation. One or several segments of the ring-shaped area (7) comprise at least one wavelength converting material (8) emitting radiation of a second wavelength upon impingement of the laser beam. The reflector (4) allows the passage of the laser beam through a central portion of the reflector (4), collects the radiation emitted from a location of impingement of the laser beam on the ring-shaped area (7) and directs the collected radiation to an emission direction. The support(6) is mounted in a bearing (10) arranged distant from the rotation axis (9) to allow unhindered passage of the radiation directed by the reflector (4) to the emission direction. The arrangement of the reflector between the laser diodes and the rotatable support and the location of the bearing for the support distant from the rotation axis allow a compact design of the solid state light source in connection with a high luminescent efficiency.