Abstract: The invention relates to a radiation protection filter for skin pigmentation during solar irradiation. The light transmittance of the radiation protection filter in the wavelength range between 380 and 780 nm is such that, when the radiation protection filter is used, the amount of radiation that penetrates the eye lens in the 340 to 400 nm range is, at the very most, that amount which would penetrate the eye lens when the radiation protection filter is not used. Radiation-caused eye damage is thus prevented.

Abstract: The invention relates to a UV radiation device for phototherapy of dermatoses, especially psoriasis, which produces UV radiation the radiation intensity E.sub.2 of which present in the effective area in the wavelength range below 300 nm is substantially less than the radiation intensity E.sub.1 in the wavelength range between 300 and 310 nm, the radiation dose being between 0.7 and 1.0 times the erythema threshold dose. Such a UV radiation device is distinguished by good therapeutic effectiveness and the avoidance of undesirable side effects.

Abstract: A radiation protection filter for plants wherein.tau.1<0.02.tau.3>0.4.tau.3/.tau.4>1.5.tau.4<0.4.tau.5/.tau.4>2.tau.6/.tau.4>2and wherein.tau.1=average of spectral transmittance between 300 and 330 nm..tau.3=average of spectral transmittance between 400 and 500 nm..tau.4=average of spectral transmittance between 500 and 600 nm..tau.5=average of spectral transmittance between 600 and 700 nm..tau.6=average of spectral transmittance between 700 and 800 nm.

Abstract: The disclosure concerns a device for the phototherapeutic treatment of hyperbilirubinemia in newborn infants by radiation. This device ensures that at most 10% of the radiation present in the effective range of 405 to 545 nm lies below 460 nm. Adverse effects associated with the presence of radiation of wavelengths shorter than 460 nm in the known devices are thereby avoided.