Patent ID: 8899815

Claim:
A uniform reflective light-guide apparatus with micro-structure, for accompanying an edge light source, comprising: a light-guiding layer, further defining a light-introducing surface and a light-exiting surface, the light-introducing surface being for allowing entrance of lights from the edge light source into the light-guiding layer, the light-exiting surface being perpendicular to the light-introducing surface for allowing at least a portion of the lights in the light-guiding layer to leave the light-guide apparatus therefrom; and a reflective layer for reflecting the lights back to the light-guiding layer; the uniform reflective light-guide apparatus characterized on that the reflective layer and the light-guiding layer are manufactured integrally into a double-layer laminating plate by a co-extrusion process so as to avoid possible existence of an air spacing between the reflective layer and the light-guiding layer, a reflective surface is defined to an interface between the reflective layer and the light-guiding layer, and a three-dimensional micro-structure is constructed on the reflective surface; wherein a difference in refraction index (Δn) between the reflective layer and the light-guiding layer is ranged between 0.05 and 1; wherein the light-exiting surface has thereon another micro-structure, and the micro-structure of the light-exiting surface and the microstructure of the reflective surface satisfy the following two criteria: 0.016≦( H 1 /P 1)*( H 2 /P 2)≦0.121 (1) wherein the H1 is a depth of the micro-structure of the light-exiting surface, the P1 is a width of the micro-structure of the light-exiting surface, the H2 is a depth of the micro-structure of the reflective surface, and the P2 is a width of the micro-structure of the reflective surface; and 0.02 <Rh (1 /H 2)<0.5, (2) wherein the Rh is a thickness of the reflective layer.