| 摘要 |
PURPOSE:To easily and efficiently form the pattern on the glass plate by forming a light-absorbing metallic film on one surface of the material, and irradiating and traveling the laser beam thereon. CONSTITUTION:The optical fiber bundle 4 consisting of quartz glass which is carried by a robot arm has the diameter of approximately 100-500mum, and the heat wave reflective metallic film 2 is irradiated with the laser flux of the same diameter from the tip of the fiber For example, irradiation of the YAG laser beam is executed on the glass plate in the condition of the wavelength of 1.06mum, the output of 100W, the emission pulse of 200Hz, the scanning speed of 30m/min. As a result, the void pattern is formed, where the metallic film part as shown in the line 5 is evaporated and scattered. Alternatively, the heat wave reflective metallic film 2 may be formed on the back surface of the glass plate 1, and irradiation with the laser may be executed from the front side, or the heat wave reflective metallic film 2 may be formed on each surface of the glass plate 1 and irradiation with the laser beam may be executed from either side of the glass plate. |
