| 摘要 |
PROBLEM TO BE SOLVED: To provide optical devices to generate white light by mixing three colors of RGB at a minimum distance in a lighting system utilizing LEDs of the three colors.SOLUTION: An optical device 200 includes: a transparent lower surface 202A, 202B, 202C; an upper surface 204A, 204B disposed opposite the lower surface and having a first specular layer disposed thereon; and a second specular layer disposed on an upper region 207 and a lower region 208 of a first lateral surface 206A, 206B extending between the lower surface and the upper surface.SELECTED DRAWING: Figure 2A |
