Invention Grant
US08684544B2 Retroreflective member producing iridescent reflected light 有权
反光构件产生虹彩反射光

Retroreflective member producing iridescent reflected light
Abstract:
An object of the present invention is to provide a retroreflective member that can improve the visibility further. The retroreflective member includes a reflective layer and transparent microscopic beads 13. The retroreflective member gives a phase difference corresponding to a visible light wavelength to at least a part of incident light and recombines, emphasizes a light component having the visible light wavelength by interference, and returns coherent light having a visible light wavelength depending on the incident angle in the traveling direction of the incident light. The reflective layer includes a light-transmissive interference layer 14, and the interference layer 14 each has an optical layer thickness of 100 to 600 nm so as to generate an interference color having a visible light wavelength depending on the incident angle of light.
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