Patent ID: 7820991
Filing Date: 2010-10-26
Classification: B29C,B32B,H01K

Abstract:
1. A radiation source configured to generate electromagnetic radiation having a major effective component in a near-infrared region including a wavelength region of between 0.8 μm and 1.5 μm, said radiation source forming an elongated irradiation zone by using an elongated halogen lamp comprising: a glass body having a tubular shape and including a first bent region adjacent a first end of the glass body, a second bent region adjacent a second end of the glass body, and a substantially linear region extending between the first bent region and the second bent region; at least one spiral filament coupled within the glass body; an elongated reflector positioned adjacent to the glass body and defining a reflector surface; and connectors coupled at each of the first end and the second end and disposed in one of a region of the reflector surface and behind the reflector surface with reference to a position of the halogen lamp, wherein at least one end of the glass body is bent around toward the reflector at at least one of the first bent region and the second bent region, and wherein the at least one spiral filament is at least one of thicker and more densely wound in the bent regions of the glass body than in the substantially linear region of the glass body such that a radiation flux density of the radiation source is substantially constant in a longitudinal direction of the radiation source between outermost points of the first end and the second end.