| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize a linear light source in which sufficient brightness can be obtained even if the length is long. <P>SOLUTION: One unit is configured of a columnar body 2 having four sides and two end faces formed by a transparent material, and a light source 1 emitting light toward the columnar body. The columnar body has a first side having a reflecting structure into which the light from the light source enters and which reflects the light transmitted in the columnar body, a first end face which reflects the light entered through the first side and makes it propagate in the columnar body, a second side which is opposed to the first side and from which the light reflected at the first side is emitted, and a second end face which contacts with the second side in acute angle. The light source is arranged at a location opposed to the first end face on the first side, and a plurality of units configured of the columnar body and the light source are arranged in the longitudinal direction of the columnar body. <P>COPYRIGHT: (C)2004,JPO |
