Laser-beam utilization device and vehicle headlight
View Patent ↗A headlamp ( 1 ) that utilizes a laser beam includes a scattered-light emitting unit ( 21 ) that emits scattered light upon receipt of a laser beam deviated from a predetermined path through which the laser beam is to pass or a predetermined irradiation region that is to be irradiated by the laser beam.
1. A laser-beam utilization device that utilizes a laser beam, the device comprising:
a scattered-light emitting unit that emits scattered light upon receipt of a laser beam deviated from a predetermined path through which the laser beam is to pass or a predetermined irradiation region that is to be irradiated by the laser beam;
a light source that emits the laser beam; and
a light emitting unit that is disposed in the predetermined irradiation region and that emits fluorescence upon receipt of the laser beam emitted from the light source.
2. A laser-beam utilization device that utilizes a laser beam, the device comprising:
a scattered-light emitting unit that emits scattered light upon receipt of a laser beam deviated from a predetermined path through which the laser beam is to pass or a predetermined irradiation region that is to be irradiated by the laser beam; and
a detector for detecting the scattered light emitted from the scattered-light emitting unit.
3. The laser-beam utilization device according to claim 2 , further comprising a stop instruction controller for instructing the light source, which emits the laser beam, to stop emitting the laser beam when the detector has detected the scattered light.
4. A laser-beam utilization device that utilizes a laser beam, the device comprising:
a scattered-light emitting unit that emits scattered light upon receipt of a laser beam deviated from a predetermined path through which the laser beam is to pass or a predetermined irradiation region that is to be irradiated by the laser beam,
wherein the scattered-light emitting unit emits fluorescence having a predetermined wavelength as the scattered light.
5. The laser-beam utilization device according to claim 2 ,
wherein the scattered-light emitting unit emits fluorescence having a predetermined wavelength as the scattered light, and
wherein the device further comprises an outdoor-light blocking filter for preventing outdoor light having a wavelength equal to or close to the predetermined wavelength from entering a detectable range of the detector.
6. The laser-beam utilization device according to claim 1 , wherein the scattered light emitted from the scattered-light emitting unit has a wavelength different from a wavelength of the fluorescence emitted by the light emitting unit.
7. A vehicle headlight comprising the laser-beam utilization device according to claim 1 .
8. A vehicle headlight comprising the laser-beam utilization device according to claim 2 .
9. A vehicle headlight comprising the laser-beam utilization device according to claim 3 .
10. A vehicle headlight comprising the laser-beam utilization device according to claim 4 .
11. A vehicle headlight comprising the laser-beam utilization device according to claim 5 .
12. A vehicle headlight comprising the laser-beam utilization device according to claim 6 .