| 摘要 |
PROBLEM TO BE SOLVED: To irradiate illumination light looking attractive according to a scene in a lighting apparatus in which a plurality of LEDs are annularly arranged.SOLUTION: A lighting apparatus 1 includes: a plurality of LEDs 3 annularly arranged about a central portion of an apparatus main body 2; and an optical component 4 controlling distributions of light emitted from the LEDs 3. The optical component 4 includes: a dome-like incident surface 41 on which the light emitted from the LEDs 3 is incident; and an emission surface 43 from which the light propagated through a medium portion 42 is emitted. Among distances from a center of a light-emitting portion of each LED 3 to the incident surface 41, a distance r in an optical axis direction and a distance d2 in an outer circumferential direction of the apparatus main body 2 satisfy r/d2<1. With this configuration, it is possible to irradiate illumination light so that brightness is high just under the apparatus, low on an outer circumference of the apparatus, and rapidly lowers from a center of the apparatus toward the outer circumference, and make the illumination light look attractive like a spot light. |
