| 摘要 |
PROBLEM TO BE SOLVED: To provide a luminaire capable of achieving high output and downsizing.SOLUTION: A luminaire includes: a reflection type fluorescent plate; a light condensing lens arranged in front in an optical axis direction of the fluorescent plate; and an annular light condensing mirror having a light radiation opening whose diameter is larger than an outer diameter of the light condensing lens, arranged so that the light radiation opening is located in front in the optical axis direction of the fluorescent plate, and for reflecting the light, out of emission light from the fluorescent plate, heading in the direction other than the direction heading to the light condensing lens and condensing it. Excitation light from an excitation light source is radiated to the fluorescent plate via a gap part between the light condensing mirror and the light condensing lens.SELECTED DRAWING: Figure 1 |
