| 主权项 |
1. A lighting device comprising
a plurality of solid state light emitting elements (1), a beam shaping optics (7) having an entrance aperture (6), a controller (8) for controlling a flux of said solid state light emitting elements by adjusting current to at least two of said solid state light emitting elements independently, and a light sensor (9) connected to the controller (8), each solid state light emitting element being optically connected to a set of optical fibers (5) each having a first end optically connected to said solid state light emitting element and a second end optically connected to said entrance aperture (6), so as to guide collimated light from the solid state light emitting element to the beam shaping optics (7), additional optical fibers (10a, 10b; 11a, 11b) each having a first end optically connected to only one of said solid state light emitting elements and a second end optically connected to said light sensor (9), whereby each of said additional optical fibers provides to said light sensor only light from said solid state light emitting element so connected, wherein information pertaining to light received by the sensor is derived by the sensor and used by the controller in said adjusting current, and wherein said solid state light emitting elements are distributed over an area larger than said entrance aperture (6). |
