| 摘要 |
The present invention relates to a high quantum efficiency lighting device comprising a solid state light source (54) and at least one light influencing element (10), being adapted to influence light emitted from solid state light source. The light influencing element (10) comprises a first electrode layer (11), and a second electrode layer (13), wherein the second electrode layer (13) is biased to remain in a rolled-up state, and adapted to be unrolled into an unrolled state in response to an electric potential applied between the first and second electrode layers, said second electrode layer in its unrolled state, extending across said optical light path, and being adapted to influence light emitted from the solid state light source (54). |
