| 摘要 |
PURPOSE:To easily grind the inner face of a void inside a light transmission body by forming the light transmission body with two blocks, to easily enlarge a light emitting plane and to prevent luminance nonuniformity corresponding to a light source on the light emitting plane with a recessed part at the upper part of the light source part of the light transmission body. CONSTITUTION:A linear light source 1 is housed inside the void formed by two light transmission bodies 2a and 2b, and light emitted from the linear light source 1 is made incident into the light transmission bodies. The light made incident into the light transmission bodies is repeatedly reflected on the front faces and rear faces of the light transmission bodies and traveled to the peripheral parts of the light transmission bodies and the light, which traveling direction is changed by the screen printing or surface coarse processing of light transmission body rear faces 3a and 3b, is emitted from the surfaces of the light transmission bodies to the outside. The emitted light is transmitted through a diffusion plate 5, and a liquid crystal panel 6 is irradiated with it. |
