| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting device made to have sufficient lightness, brilliance and glaringness by irradiating a plurality of stepped circular bodies with light without attenuating an amount of the light emitted from a specific light source, and making every stepped circular body effectively diffuse the light in various angles. <P>SOLUTION: The lighting device is composed of a light source 1 and a cylinder 2 covering the light source, and two stepped circular bodies 5 and a stepped circular body 50 without a light transmission hole 7 are arranged in a serial direction in the cylinder 2. The plurality of stepped circular bodies 5 and a stepped circular body 50 without the light transmission hole 7 are tinted, namely, every stepped part 5A of the stepped circular bodies 5 and every stepped part 5A of the stepped circular body 50 without the light transmission hole 7 are tinted with the colors different from each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
