Heinrich Lahmann (1860 - 1905) founded a trend-setting naturopathic sanatorium in the health resort Weißer Hirsch near Dresden. More than 2,000 patients were treated here in 1900. Heinrich Lahman had got to know the light-air cure as a therapeutic method at Rikli. In 1894 he introduced the treatment with radiation lamps for various skin diseases as a further development of the Rikli idea.