| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting system having large luminance, a small temperature increase, and improved chromaticity uniformity, where a plurality of LED chips are arranged linearly. <P>SOLUTION: The lighting system includes: a plurality of light-emitting elements 2 arranged in a line with a prescribed interval; and a phosphor layer 3 for integrally covering the upper and side faces of the plurality of light-emitting elements 2. The interval (d1) of the light-emitting elements is nearly equal to distance (d2) between the side face of the light-emitting elements and that of the phosphor layer 3, thus preventing a change in chromaticity from appearing periodically in illumination light. Also, a film thickness (d3) of the phosphor layer is reduced as compared with d1 or d2, thus further preferably preventing a phenomenon, where emission light (excitation light) from the light-emitting elements has a strong color taste at edges of illumination light. <P>COPYRIGHT: (C)2010,JPO&INPIT |
