| 摘要 |
A light diffusion device is described that provides uniform light output from a surface. One embodiment uses a short ratio of device height to width of the surface. The diffusion device comprises a reflector with a light entry window, a reflective baffle, a novel shaped reflector, and a diffusion layer for light to exit through. Light travels primarily from the source to the baffle to the reflector, then to the diffusion layer. The reflector has a 3D diffuse reflector surface that is a typically evolved form near its center then smoothly morphs to a non-revolved, preformed shape near its corners. The diffusion device is free of refractive elements. In some embodiments the devices are placed adjacently, in an array, to form a tile or panel of programmable light sources. The baffle and reflector may be manufactured from a flat sheet. Multiple devices may have elements manufactured from monolithic material. |
