| 摘要 |
Phototherapy device in which, within a housing, there is a light source, and in which light with given wavelengths emerges from a light exit opening of the housing, at least two filters being located between the light source and the light exit opening, each of which each absorbs light of different wavelength ranges, the filter on a light incidence side absorbing light with shorter wavelengths than the filter on the light exit side.
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