| 摘要 |
<p>The display device comprises: - a main control circuit (21) for deriving a light-intensity datum value, - n secondary control circuits (20), each being associated with one of the n display subassemblies (11), each secondary control circuit (20) including means (18) for receiving the said datum value and means for controlling the light source or sources (13) of the associated subassembly (11) so that each light intensity emitted corresponds to the said light-intensity datum value, - the control means included in each secondary control circuit (20) comprising means for direct detection of each light intensity emitted by the associated light source or sources (13), means (17) for comparing each light intensity with the said datum value, and means for controlling the power supply to the associated light source or sources (13) depending on the result of the comparison, - the means for direct detection of each light intensity comprising one or more fibres (15) of the bundle of optical fibres (14) which are linked to a photoelectric conversion device (16). <IMAGE></p> |
