| 摘要 |
A luminous body is described, in particular in the form of a planar lighting device for general lighting or for backlighting of displays, which luminous body comprises a plurality of light sources, for example LED elements, arranged in a housing, in particular an optical waveguide plate. The optical waveguide plate forms a first optical medium with a first optical scattering power, into which the light of the light sources is coupled. Furthermore, at least one second optical medium with a second optical scattering power is provided, such that the light propagating in the second optical medium is at least substantially coupled in from the first optical medium, and the scattering power of at least one of the media is chosen for the purpose of influencing the flow of light in the housing such that a given brightness distribution of the light on the light emission surface is achieved. |
| 主权项 |
1. A luminous body comprising a housing with a light emission surface and a plurality of light sources arranged in the housing, wherein the housing comprises at least a first optical medium with a first optical scattering power, into which medium the light of the light sources is coupled, and at least a second optical medium with a second optical scattering power, such that the light propagating in the second optical medium is at least substantially coupled thereinto from the first optical medium, and wherein the scattering power of at least one of the media is chosen with a view to influencing the flow of light in the housing such that a predefinable brightness distribution of the light over the light emission surface is achieved. |
