| 摘要 |
PURPOSE:To produce worked articles exhibiting a rainbow-like beautiful reflected luster by irradiating the surface of a metal with laser interference light to form fine ruggednesses and reversely transferring the fine ruggednesses to a thick plating layer. CONSTITUTION:The interference light B1 of a laser beam is focused by a working condensing lens L, and the surface of the metallic sheet M is scanned by the focused light B2 to successively form a fine rugged part U1 having several hundred recessed lines I corresponding to the bright part of the interference fringes of an interference pattern. The sheet M provided with the fine rugged part U1 is used as a matrix, a thick plating layer P (most preferably of copper) is provided on the sheet M surface through a release coating film S, and then the plating layer P is released from the sheet M. Consequently, a rainbow- colored worked article P' consisting of the thick plating layer P having a fine rugged part U2 reverse to the fine rugged part U1 is obtained. |
