Lighting apparatus, headlamp, and mobile body
View Patent ↗A lighting apparatus is provided that, while suppressing an increase in size, can change the illuminating direction. The lighting apparatus has: a laser generator which emits laser light; a light emitting member which is irradiated with the laser light emitted from the laser generator to emit light; an irradiated position changer which moves and thereafter stops an irradiated position at which the light emitting member is irradiated with the laser light; and a light projecting member which projects the light emitted from the light emitting member.
1. A lighting apparatus comprising:
a laser generator which emits laser light;
a light emitting member which is irradiated with the laser light emitted from the laser generator to emit light;
an irradiated area changer which changes an area of an irradiated region in which the light emitting member is irradiated with the laser light; and
a light projecting member which projects the light emitted from the light emitting member,
wherein the light projecting member comprises a reflector having a reflective surface which reflects the light emitted from the light emitting member,
the reflective surface is formed in a shape having a focal point, and
the light emitting member is disposed in a region including the focal point of the reflective surface or near the focal point of the reflective surface.
2. A headlamp comprising the lighting apparatus according to claim 1 .
3. A mobile body comprising the headlamp according to claim 2 .
4. The lighting apparatus according to claim 1 , wherein
the light emitting member comprises a fluorescent member.
5. The lighting apparatus according to claim 1 , wherein
the light emitting member is so formed as to extend in a predetermined direction crossing a depth direction of the reflective surface, and
the area of the irradiated region on the light emitting member is changed by the irradiated area changer changing a length, at least in the predetermined direction, of the irradiated region.
6. The lighting apparatus according to claim 1 , further comprising an output adjuster which adjusts an output of the laser generator, wherein
the output adjuster adjusts the output of the laser generator in synchronism with the change of the area of the irradiated region on the light emitting member.
7. The lighting apparatus according to claim 1 , further comprising a lens which transmits the laser light emitted from the laser generator, wherein
the irradiated area changer changes the area of the irradiated region on the light emitting member by moving the lens in an optical axis direction.
8. A lighting apparatus comprising:
a laser generator which emits laser light;
a light emitting member which is irradiated with the laser light emitted from the laser generator to emit light;
an irradiated area changer which changes an area of an irradiated region in which the light emitting member is irradiated with the laser light;
a light projecting member which projects the light emitted from the light emitting member; and
a lens which transmits the laser light emitted from the laser generator,
wherein the irradiated area changer changes the area of the irradiated region on the light emitting member by moving the lens in an optical axis direction.
9. The lighting apparatus according to claim 8 , wherein
the light emitting member comprises a fluorescent member.
10. The lighting apparatus according to claim 8 , further comprising an output adjuster which adjusts an output of the laser generator, wherein
the output adjuster adjusts the output of the laser generator in synchronism with the change of the area of the irradiated region on the light emitting member.
11. A headlamp comprising the lighting apparatus according to claim 8 .
12. A mobile body comprising the headlamp according to claim 11 .
13. A lighting apparatus comprising:
a laser generator which emits laser light;
a light emitting member which is irradiated with the laser light emitted from the laser generator to emit light;
an irradiated area changer which changes an area of an irradiated region in which the light emitting member is irradiated with the laser light; and
a light projecting member which projects the light emitted from the light emitting member,
wherein the light projecting member comprises a light projecting lens which controls the light emitted from the light emitting member, and
the light projecting member is configured so that the light emitted from the laser generator enters the light projecting lens through a region inducing a focal point of the light projecting lens or near the focal point of the light projecting lens.
14. The lighting apparatus according to claim 13 , further comprising an output adjuster which adjusts an output of the laser generator, wherein
the output adjuster adjusts the output of the laser generator in synchronism with the change of the area of the irradiated region on the light emitting member.
15. A headlamp comprising the lighting apparatus according to claim 13 .
16. A mobile body comprising the headlamp according to claim 15 .
17. The lighting apparatus according to claim 13 , wherein
the light emitting member comprises a fluorescent member.
18. The lighting apparatus according to claim 13 , further comprising a lens which transmits the laser light emitted from the laser generator, wherein
the irradiated area changer changes the area of the irradiated region on the light emitting member by moving the lens in an optical axis direction.