Light-emitting apparatus
In various embodiments, a light-emitting apparatus is provided. The light-emitting apparatus includes at least one semiconductor light source configured to emit at least one primary light beam, a deflection device configured to deflect the at least one primary light beam onto respectively associated different positions on a phosphor body, at least one light detector configured to detect light that was emitted by the phosphor body, and an evaluation device. The evaluation device is configured to identify damage to the phosphor body on the basis of at least one measurement signal generated by the at least one light detector, and to correlate the at least one measurement signal with at least one position on the phosphor body.
1. A light-emitting apparatus, comprising:
at least one semiconductor light source configured to emit at least one primary light beam;
a deflection device configured to deflect the at least one primary light beam onto respectively associated different positions on a phosphor body;
at least one light detector configured to detect light that was emitted by the phosphor body; and
an evaluation device configured to:
identify damage to the phosphor body on the basis of at least one measurement signal generated by the at least one light detector;
correlate the at least one measurement signal with at least one position on the phosphor body.
2. The light-emitting apparatus of claim 1 ,
wherein identifying damage to the phosphor body on the basis of at least one measurement signal generated by the at least one light detector is followed by triggering of at least one action.
3. The light-emitting apparatus of claim 2 ,
wherein the at least one action comprises carrying out at least one test illumination of the at least one phosphor body.
4. The light-emitting apparatus of claim 3 ,
wherein the at least one phosphor body can be irradiated by at least two disjointed primary light beams and the at least one action comprises carrying out a test illumination of the at least one phosphor body for each individual primary light beam.
5. The light-emitting apparatus of claim 3 ,
wherein the light-emitting apparatus is configured to carry out the test illumination after identification of any damage.
6. The light-emitting apparatus of claim 3 ,
wherein the light-emitting apparatus is configured to carry out the test illumination independently of any damage.
7. The light-emitting apparatus of claim 1 ,
wherein correlating the at least one measurement signal with at least one position on the phosphor body is followed by triggering of at least one action.
8. The light-emitting apparatus of claim 7 ,
wherein the at least one action comprises carrying out at least one test illumination of the at least one phosphor body.
9. The light-emitting apparatus of claim 8 ,
wherein the at least one phosphor body can be irradiated by at least two disjointed primary light beams and the at least one action comprises carrying out a test illumination of the at least one phosphor body for each individual primary light beam.
10. The light-emitting apparatus of claim 8 ,
wherein the light-emitting apparatus is configured to carry out the test illumination after identification of any damage.
11. The light-emitting apparatus of claim 8 ,
wherein the light-emitting apparatus is configured to carry out the test illumination independently of any damage.
12. The light-emitting apparatus of claim 1 ,
wherein the at least one action comprises at least one of subsequent driving of the at least one semiconductor light source or subsequent driving of the deflection device such that a damage region associated with the identified damage on the phosphor body is not illuminated.
13. The light-emitting apparatus of claim 1 ,
wherein the at least one action comprises switching off at least that semiconductor light source by means of which a region on the phosphor body that is associated with the identified damage can be illuminated.
14. The light-emitting apparatus of claim 1 ,
wherein the entire illuminable region of the phosphor body can be monitored by a light detector.
15. The light-emitting apparatus of claim 1 ,
wherein the identification of damage to the phosphor body is carried out on the basis of a comparison of the at least one measurement signal generated by the at least one light detector with a respective reference signal.
16. The light-emitting apparatus of claim 15 ,
wherein the measurement signals or the reference signals are normalized with a currently applied light output.
17. The light-emitting apparatus of claim 1 ,
wherein the light-emitting apparatus is a projection apparatus or part of a projection apparatus.
18. An illumination method, comprising:
illuminating a phosphor body in a scanning fashion using at least one primary light beam;
detecting light emitted by the phosphor body;
identifying damage to the phosphor body on the basis of the detection; and
correlating the identification of the damage with at least one position on the phosphor body.