RAINBOW COLOR DEVELOPMENT PROCESSING METHOD

PURPOSE:To provide the rainbow color development processing method which subjects a metallic surface to ornamentation processing to variously change the tints of reflection gloss by directions of incident light and viewing angles like rainbow colors. CONSTITUTION:The surface of a work piece W consis...

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Bibliographische Detailangaben
Hauptverfasser:	NAKANISHI TAKASHI, OSHIMA ICHIRO, HIRATA SHIGEKAZU, OKANO YOSHIKAZU, OSHIMA TOKIHIKO, NAGATA ITSUO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DEVICES USING STIMULATED EMISSION ELECTRICITY MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PURPOSE:To provide the rainbow color development processing method which subjects a metallic surface to ornamentation processing to variously change the tints of reflection gloss by directions of incident light and viewing angles like rainbow colors. CONSTITUTION:The surface of a work piece W consisting of a metallic material is irradiated with the convergent pulse laser beam L in reactive gas in such a manner that pulses are cast many times to the same position. As a result, the thin film P consisting of the reaction product of the metallic components of the work piece W and gaseous components is formed on the surface of the work piece W in the fore stage of this irradiation and the laser beam La propagating in the plane direction with the thin film P as a waveguide and the laser beam L for irradiation are interfered in the post stage of the irradiation, by which the fine ruggedness G corresponding to the intensity distribution of the interference fringes is formed on the surface of the work piece W.