| 摘要 |
A lens, an LED backlight module, and a display device. The lens receives light rays emitted by a light source (8) through a light-incident surface (9). After the light rays emitted by the light source enter the lens, a part of the light rays (P1, P3) are directly refracted out from one light-output surface, and the other part of the light rays (P2, P4, P5) are first reflected to another light-output surface or a bottom surface (10) through one light-output surface, then reflected to still another light-output surface through the another light-output surface or the bottom surface, and finally refracted out from the still another light-output surface. Accordingly, the light rays emitted by the light source are scattered in the lens, and then refracted out from different light-output surfaces of the lens; therefore, light-output areas are enlarged and the light-output uniformity is good. The lens is especially applicable to various LED backlight modules and display devices. |
