| 摘要 |
[Problem] To provide a light source device that is thin and can supply light in a substantially uniform manner from a light irradiation surface. [Solution] A light source device (1) having a light source (5), a light source side reflective plate (6) to which the light source (5) is fixed, an emission side reflective plate (7) facing the light source side reflective plate (6), and a fixing means (10) for fixing the light source side reflective plate (6) and the emission side reflective plate (7), wherein the light source is constituted by one or a plurality of light-emitting diodes, the emission side reflective plate (7) is formed so that a portion thereof facing the light source (5) has the highest optical reflectance and the lowest optical transmittance while the optical reflectance decreases and the optical transmittance increases further away from the light source (5), and the distance between the light source side reflective plate (6) and the emission side reflective plate (7) is greatest at a portion where the light source (5) is provided, while the distance decreases at portions further away from the portion where the light source (5) is provided. |
