| 摘要 |
According to the feature of the present invention, a reflective sheet is separated from a diffusion plate by a constant distance and a lens is formed on the upper surface of the reflective sheet and optically determines a mechanism by light outputted from the light emitting device. The lens includes a body with a preset size; a light entering surface which has a recess part in the center of the lower surface of the body and emits light outputted from the light emitting device; a first light exiting surface which is convex towards the outside based on the center of the upper surface of the body; a second light exiting surface where the radius of the lower surface of the body is inclined more than the radius of the upper surface of the body. Light emitted from the light emitting device passes through the light entering surface to be diffused through the first light exiting surface and the second light exiting surface. |
