Recently, resin molding products have been taken the place of metal products and wooden products. Furthermore, ultra-precise machining and molding technologies are developing, to decorate the surface of products for precisely controlling reflection or/and transmission characteristics. Micro-relief structure is fabricated by machining on the resin molding die or coating by the small particles to the surface of the product, for example. This chapter introduces the method of convenient estimation method of visual appearance and reflection characteristics of resin decorative board due to the difference in surface texture by lighting simulation.
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