| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems that a color filter for stage illumination constructed by coloring various kinds of color has a possibility of melting by high heat from a light source and is required to exchange the expensive color filter very often as it becomes unclear by the use for a long time together with repetition of a complicated work. <P>SOLUTION: The color filter device for illumination is pinched by a frame, and the frame has a spacer and an air circulation part. A heat resistant glass is arranged on the light source side of the frame, a color filter is arranged on the front side, and an air circulation layer which communicates with the air circulation part and is formed with the spacer is arranged between the color filter and the heat resistant glass, and furthermore, a protection net is installed on the front side of the color filter. <P>COPYRIGHT: (C)2009,JPO&INPIT |
