光源設計對ABS塑膠霧面噴漆產品色偏之影響研究

The Color Bias Effects of LED Lighting Design on ABS Matte Spray Painted Plastic Products

零售業為了吸引客人，通常會對產品的展示光源進行設計以營造氛圍，現今因LED照明易調整且能源消耗低等特點，成為目前商場最常用的照明系統。本研究針對產品設計中最常使用於產品外形材料之ABS塑膠霧面噴漆產品做實驗對象，使用不同的LED照明，探討在不同色溫、照度下，消費者所看到產品會產生何種色偏。本研究選擇了兩種常用的LED照度（500lux，1500lux）、兩種色溫（2700K，4000K）和四種ABS塑膠霧面噴漆產品色彩（紅、綠、藍、黃），測量觀察者在不同光源組合下之色偏。結果顯示，LED所營造的四種光源情境中，以色溫因素所產生色偏具顯著性；而綠色和黃色的ABS塑膠霧面噴漆產品產生的色偏較為明顯，其中，綠色產品在2700K色溫下黑度提高，色相向黃色偏轉，在4000K色溫下，黑度和色相兩部分影響程度低而彩度提高；黃色產品在2700K在4000K色溫下黑度降低，彩度提高。本結果可建立應用於ABS塑膠霧面噴漆產品色偏預測，提供設計師預知色偏的趨勢，可為零售照明場域的光源應用提供參考。

To prompt customers to purchase products, retailers tend to use lighting to create the perfect atmosphere. Light-emitting diodes (LEDs) are favorable illumination systems because of high energy efficiency, low maintenance cost, longevity, low pollution and easy to adjust. This study focused on acrylonitrile–butadiene–styrene (ABS) plastic with matte spray painted surface, a commonly used material in product design to explore the color bias of products under different LED lighting conditions. Specifically, this study focused on two commonly used illuminance levels (500lux, 1500lux), two color temperatures (2700K, 4000K) and four kinds of spray paint color (red, green, yellow and blue) on ABS plastic products to measure the color bias of observers under different lighting conditions. The results revealed that under different conditions, color temperature had more significant effects on the color bias of ABS plastic products than illumination, and the effects of the LED light sources on the green and yellow ABS products were more obvious than those on other products. The results of this study can serve as a reference for designers of ABS plastic products in predicting color bias tendencies, and such predictions can be used to optimize the practical lighting applications in retail stores.