The beurer tl50 brightlight simulates daylight to increase your feeling of well being during the dark winter months it is a medically certified product with a light intensity of 10 000 lux 13cm which is necessary as a treatment or as a preventative measure to the symptoms of sad normal electric light is not sufficient to influence the hormonal balance as generally a well lit office is only 500 lux it is a slimline and attractive design thanks to the led technology led is energy saving an