| 摘要 |
PURPOSE:To execute bright bridgeless marking by composing a marking mask of a substrate having a high optical transmission factor and a mask part for working and marking the surface of the substrate and forming it in the pattern shape and having a low optical transmission factor. CONSTITUTION:The marking mask is composed of the substrate 11 having a high optical transmission factor of the light near 10.6mum and the mass part 12 having a low optical transmission factor of the light near 10.6mum, gold is vapor-deposited on the substrate 12 made from silicon, its upper part is coated with resist, exposed, developed, etched and the vapor-deposited gold is formed in a prescribed pattern to make the mask part 12. The laser beam emitted from a laser beam oscillator 2 is condensed to a specified direction, transmits a marking mask 1, changes into light of a specified pattern, is reduced by a lens 5, irradiates a work 7 and marks it. |
