| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a surface light source device in which LEDs having at least two different kinds of color temperatures are used and an output of illumination light without color unevenness is aimed at. <P>SOLUTION: The surface light source device includes: an LED array 20 which includes LEDs 22a, 22b having at least each different two kinds of color temperatures arranged alternately and which is arranged to face an end face of a light guide plate 10; and the light guide plate 10 which is a transparent plate body, includes an end face 12 for taking in the light emitted from the LED array 20 and a scattering part 11 arranged on a rear face, and irradiates toward a front face side by scattering the light incident from the end face 12 at the scattering part 11. <P>COPYRIGHT: (C)2011,JPO&INPIT |
