| 摘要 |
PURPOSE:To improve the teaching accuracy of the laser beam condenser to be used for laser beam cutting machine, etc., and to enhance the efficiency of the teaching operation. CONSTITUTION:A moving lens holder 12 fixed with moving lenses 10a, 10b constitutes a piston which is hermetically sealed from a body 7 by means of an O-ring 14 provided on its outer periphery and is disposed movably in an optical axis direction within a sleeve constituted on the inside surface of the body 7. The position of the moving lens holder 12 is controlled by the on-off control of the assist gas at the time of the cutting operation and the teaching operation. As a result, the chromatic aberrations of the laser beam B for processing and the guiding beam are absorbed and the focal positions of both are aligned. |
