| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a solid lighting device capable of correcting an irradiation direction of a spatially transmitted laser beam.SOLUTION: A solid lighting device according to an embodiment comprises: a solid light source section; a lamp section; a cylindrical support section; a light detection section; and an irradiation direction control section. The solid light source section emits laser light at ultraviolet to blue wavelengths. The lamp section includes: a heat sink; and a wavelength conversion layer. The wavelength conversion layer emits wavelength-converted light generated by absorbing the laser light and scattered light generated by scattering the laser light. The cylindrical support section includes an internal space. The solid light source section is stored in a bottom portion of the internal space whereas the lamp section is stored in a tip end portion of the internal space. The light detection section is provided in the internal space. The light detection section detects a misalignment of the lamp section by return light in the cylindrical support section. The irradiation direction control section is provided in the internal space. The irradiation direction control section controls an irradiation direction of the laser light on the basis of a misalignment detection signal from the light detection section.</p> |
