| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a light diffusion sheet which does not require forming of rugged shape such as knurls, grain on a mold for manufacturing an illumination lens. <P>SOLUTION: The light diffusion sheet 10 used for the illumination lens 12 of an illuminator 15 is provided with a light diffusion pattern, so that a light diffusion effect similar to the knurls, grain, etc. is obtained. The light diffusion pattern is provided on the light diffusion sheet 10 previously, so that the illumination lens 12 of a desired shape is molded easily by putting the light diffusion sheet 10 and molding the lens. The mold does not require the unevenness for providing the light diffusion pattern, costs for the mold is reduced. Even when a mold of the same cavity shape is used, the mode of light diffusion is changed easily only by changing the light diffusion pattern provided on the light diffusion sheet 10. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
