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Full-spectrum lamps

The light emitted by so-called full-spectrum lamps corresponds to the spectral composition of daylight, which is why they are often referred to as daylight lamps or full-spectrum daylight fluorescent lamps. These are tubular, three-band fluorescent lamps with a diameter of 16 mm or 26 mm. Since UV radiation is more intense in daylight than other wavelengths, full-spectrum lamps also have a higher proportion of ultraviolet light compared to conventional fluorescent lamps. They are used either for general lighting—for example, in workplaces, where the UV content must be reduced to protect against excessive radiation exposure—or in medicine for therapeutic purposes, such as light therapy for seasonal affective disorder (SAD). In this context, full-spectrum lamps enable the controlled use of UV radiation, as this is not easily achieved with natural sunlight, as evidenced by sunburn. In addition, they can help compensate for a lack of daylight. The color temperature of full-spectrum lamps ranges from approximately 5300K to 6500K, and their light has a color rendering index (CRI) of at least 90. They achieve this level of accuracy due to their continuous spectral distribution, covering wavelengths from 400 nm to 800 nm.

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