Patent attributes
Radiation source for electromagnetic radiation the major effective component of which is in the near-infrared region, in particular in the wavelength region between 0.8 μm and 1.5 μm, to form an elongated irradiation zone, with an elongated halogen lamp comprising a glass body that has a tubular shape with bases at the ends and contains at least one spiral filament, and with an elongated reflector, such that the bases of the halogen lamp are disposed in the region of the reflector surface or behind it with reference to the position of the halogen lamp, wherein the ends of the halogen lamp are bent around toward the reflector and the spiral filaments or at least one of them is made thicker or is more densely wound in the bent region of the glass body, in such a way that the radiation flux density of the radiation source is substantially constant in the long direction of the source, between the outermost points of the bases.
