| 摘要 |
PURPOSE:To make the process of forming black stripes simple by trimming an opaque film provide for an inside surface of a face plate with a laser beam to obtain a predetermined stripe pattern. CONSTITUTION:An inside surface of a face plate 8 is uniformly coated with a graphite film 6 to form an opaque film 6'. A panel 1 is fixed on a three-axle drive table so that the opaque film 6' faces against a laser beam 9 placed in a stationary position and the machining table is controlled so that the laser beam 9 trims the opaque film 6' by irradiation. By the procedure, the face plate 8 formed with a predetermined black stripe pattern can be completed. |
