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The idea of reflecting daylight is old and has been practised for thousands of years. Nowadays, this old technique can be combined with new materials and technology to help save energy and to improve lighting quality.The reflectors of the lamp re-reflect the daylight streamed indoors by reflecting surfaces outside of the window. The reflecting surfaces have a reflection factor of 98%. The lamp uses LEDs when there is not enough daylight to reflect. A light sensor calculates the amount of artificial light needed. The daylight color, which changes during the day, can also be simulated.