| 主权项 |
1. A backlight module, comprising an optical film, a reflection member and two light-emitting units, each of the two light-emitting units including a light source and a reflection cover, the light source being long bar-shaped, the reflection member being located under the optical film and being parallel to the optical film, the reflection member including a reflection body and a reflection surface on the top of the reflection body, the reflection surface including multiple side edges,
wherein the two light-emitting units are separately disposed on intersection positions of the side edges of the reflection surface, the light-emitting directions of the two light-emitting units face the reflection surface; wherein the reflection surface is designed to be a free curved surface having a default track, the lights emitted from the two light-emitting units is capable of arriving at the reflection surface and then uniformly entering into the optical film after being reflected by the reflection surface; wherein the light source includes a light-emitting surface, the light-emitting surface of the light source is perpendicular to a vertical plane being perpendicular to a planar bottom surface on the bottom of the reflection member; and wherein there forms a vertical distance from any point on the reflection surface to the vertical plane, and any point on the reflection surface has a height, relative to the planar bottom surface of the reflection member, wherein the height of any point on the reflection surface decreases with the increase of the vertical distance from it to the vertical plane, the downward trend of the height is greater on the position near the light source, and the downward trend of the height is slower on the position far from the light source. |
