[18a-P1-1~46] 1.2 Education

[18a-P1-28] Creation of pastel color tone light using blue-LED and fluorescent ink

〇Hiroyuki Kowa^1,3, Toshiyasu Tadokoro², Takahiro Furukawa¹, Kodak Abe¹, Masahiro Abe¹ (1.Azabu Sci. Sch., 2.Techno Synergy, 3.Unit)

Keywords:LED, pastel color, fluorescent ink

We experimented to simulate the color of pastel color LED with combination of blue LED and fluorescent pigment. When a blue LED is irradiated to a fluorescent dye, color mixture of blue LED and fluorescent light color is obtained. Pastel color and white can be made by devising the distribution of LED emission intensity and fluorescent pigment. A commercially available high-intensity pen ink was used for the fluorescent dye and a paper cup was used for the diffusion screen. Put a paper cup colored inside with a highlighter pen on the blue LED, a pastel color is created on the body of the paper cup.