| 摘要 |
<p>Disclosed is a surface light source apparatus provided with a light guide plate (3) that serves as a plane of incidence (3a) in which light enters a portion of the surface of a side edge thereof, and a light source (2) that is disposed along the plane of incidence (3a) and that emits light toward said plane of incidence (3a). Reflecting members (4, 5), which have reflecting surfaces (4a, 5a) that guide the light emitted from the light source (2) toward the plane of incidence (3a), are provided in a manner so as to control the spread of said light in the direction of thickness of the light guide plate (3) (the Z-direction), and the entire surface of each reflecting surface (4a, 5a) or a portion thereof near the light guide plate (3) is a specular surface. In cases in which a portion of each reflecting surface (4a, 5a) near the light guide plate (3) is a specular surface, the remaining portion (4b, 5b) of each reflecting surface is a diffuse reflecting surface.</p> |
