| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting system capable of obviating the need of adjustment of the position of a light source, and of eliminating a lamp image and excelling in luminance equalization in an emission surface; and to provide an image display apparatus. <P>SOLUTION: Projecting parts 41 of a first light-ray direction control means are used for concentrating emission energy in the frontward direction by converging dispersion of received light in the Y-axis direction; and projections 42 of a second light-ray direction control means averages emission energy in the frontward direction by converging dispersion of received light in the X-axis direction. When it is assumed that a distance between an arbitrary light source M and another light source N nearest thereto and a distance between the light source M and a light control member 4 are D and H, respectively, a total light-ray transmission factor of light emitted from the position of the light source M in parallel with an X-Z plane parallel to the X-axis and the Z-axis and at an angle of α=Tan-1ä(D/2)/H} is not smaller than 50%, and is 1.05-3 times as much as that of light emitted in the frontward direction from the position of a light source X1. <P>COPYRIGHT: (C)2007,JPO&INPIT |
