| 摘要 |
PURPOSE:To present the spot converging device that the emitting light from the light source lamp is made to converge to one spot effectively on the work. CONSTITUTION:The lamp house 3 surrounding the light source lamp 1 has an optical beam emitting hole 3d of a nozzle like small diameter by aligning the center axis to the light emission part 2 of lamp and being opened on its extension line, and the emitting light is reflected and converged, toward to the one spot on the work on the inner circumferential surface of the lamp house, the central point of each section that the light emission part of the light source lamp is divided imaginarily to the longitudinal direction is made the 1st focal point respectively, and the 1st and the 2nd ellipse reflecting mirrors 7, 8 which decide one point on the center axis of the lamp house as the common 2nd focus and is formed, the concave reflecting mirror combinated with the 3rd ellipse reflecting mirror 9 that the above common 2nd focus point is decided to the 1st focal point, the 2nd focal point is made to the spot converging point on the work 5 and formed in the inner circumferential surface of the light beam emitting hole is formed. Therefore, the light which is emitted from the light emission part of the light source lamp is reflected on the 1st, the 2nd ellipse reflecting mirrors and the 3rd ellipse reflecting mirror, and spot converted to the one point on the work efficiently. |
