DISPLAY BOARD OF PROMPTER, MANUFACTURING METHOD THEREOF, AND PROMPTER EMPLOYING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a display board of a prompter, which provides more excellent information visibility to a lecturer. SOLUTION: The display board of a prompter is configured so that an up-conversion thin film 2 for emitting the light in a wavelength shorter than prescribed when the light in the prescribed wavelength is made incident onto the thin film 2 is formed on a principal face 1A of a light transparent base member 1, and a wavelength selection reflecting film 3 for selectively reflecting the light in the wavelength emitted from the up-conversion thin film 2 is formed on a rear face 1B opposite to the principal face 1A of the base member 1. COPYRIGHT: (C)2004,JPO&NCIPI