| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light irradiation device that equalizes illuminance on the surface to be irradiated even if there are variations in illuminance characteristics of LEDs, and also, complements deterioration in illuminance even if the deterioration in illuminance or non-lighting occurs in a certain LED so as to maintain the desired illuminance in the whole irradiation region. <P>SOLUTION: The light irradiation device includes a light source 3 formed by arranging a plurality of LEDs 23, emitting light in the ultraviolet region, on the same plane so as to irradiate the light emitted from the light source 3 to an irradiation region 6 located at a position facing the same plane. The light source 3 is configured such that each segment light source includes the plurality of LEDs 23, arranged on the same substrate 21, and a light-guide part 24. A plurality of the segment light sources 2 are arranged side by side in a direction that the substrate 21 extends. The light-guide part 24 has a fixed length reaching a light-emitting face from the same plane, mixes the light emitted from the LEDs 23 inside the segment light source 2, and does not irradiate the light to the light-emitting face of another segment light source 2. <P>COPYRIGHT: (C)2010,JPO&INPIT |
