| 摘要 |
The aim of the invention is to be able to produce verifiable and reproducible information regarding the maximum radiation dose and/or the maximum exposure time of a subject to a UV radiation source. Said aim is achieved by a device for determining the allowed exposure time and/or radiation dose, comprising a UV emitter ( 7 ) for emitting a UV radiation, a UV sensor ( 8 ) for receiving the UV radiation reflected in and/or on the skin, and an evaluation unit for determining the radiation absorption. Particularly such a device individually measures the absorption of the erythema-effective UV radiation in a layer of a subject's skin, which is subject to hyperkeratosis, a UV radiation threshold value being assigned.
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