| 摘要 |
PROBLEM TO BE SOLVED: To provide a luminaire capable of stably illuminating light whose brightness is nearly constant to a desired region.SOLUTION: A luminaire includes: a plurality of light sources arranged along a predetermined direction; a first lens for condensing light emitted from the light sources; a diffusion lens for diffusing the light emitted from the first lens into the predetermined direction; and a second lens for condensing the light emitted from the diffusion lens. The second lens is arranged at a position being separated by the distance two times or greater of a curvature radius of the first lens, with the center of curvature of the first lens being as reference, in the direction toward the second lens from the plurality of light sources.SELECTED DRAWING: Figure 8 |
