| 摘要 |
PCT No. PCT/DK86/00108 Sec. 371 Date Jul. 24, 1987 Sec. 102(e) Date Jul. 24, 1987 PCT Filed Sep. 26, 1986 PCT Pub. No. WO87/01948 PCT Pub. Date Apr. 9, 1987.In accordance with a method and an apparatus for determining an individual's ability to stand exposure to ultraviolet radiation prior to causing a skin reaction, such as skin cancer or erythema, or for determining an individual's ability to become tanned by exposure to ultraviolet radiation, at least part of the individual's skin surface is exposed to electromagnetic radiation of a predetermined spectral composition, e.g. visible light, and of a predetermined intensity. The intensity of electromagnetic radiation reflected from the part of the individual's skin surface is measured so as to determine the coefficient of reflection of the part exposed to electromagnetic radiation of the predetermined spectral composition. The coefficient of reflection is converted into logarithmic representation and the logarithmic representation of the coefficient of reflection constitutes a measure representing the individual's ability to stand exposure to ultraviolet radiation prior to causing said skin reaction, or into a measure representing said individual's ability to become tanned by exposure to ultraviolet radiation.
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