| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting apparatus configured by converting a point light source into a planar light source excellent in uniformity. <P>SOLUTION: (1) The point light source is converted into a linear light source through a linear light guide plate and then converted into the planar light source through a planar light guide plate. (2) The point light source is reflected by a lamp reflector and made incident from at least two side faces of the planar light guide plate. (3) The planar light guide plate of which the upper face is rectangular is cut by a line at 45° with respect to one side of the rectangle when viewed from the upper face. After removal, the point light source is arranged in front of the side face which is one side of the side at 45° with respect to the other side in the planar light guide plate of a pentagonal shape when viewed from the upper face. <P>COPYRIGHT: (C)2011,JPO&INPIT |
