| 摘要 |
A lens device for focusing or diffusing light beams includes a lens body having a flat sheet, a first convex lens extruded away from one end of the flat sheet, a second convex lens extruded away from another end of the flat sheet, the distance between an apex of the first convex lens and the center of the bottom of the first convex lens being larger than the distance between an apex of the second convex lens and the center of the bottom of the second convex lens. Although the surface of the first convex lens is not flawless after the compression molding and light beams cannot be refracted uniformly by the first convex lens, the second convex lens refracts the light beams for pre-adjusting before the light beams are refracted by the first convex lens. |
