| 摘要 |
PURPOSE: A light diffusion plate is provided to be suitable for mass production because of easy manufacturing and to improve the reliability of product quality because of even light diffusion by forming a light diffusion part through simple etching by a physical cutter, not through fusion. CONSTITUTION: A light diffusion plate is a plate body(10) and forms a diffusion surface using a light diffusion protrusion(11) which is made in order to diffuse and emit light to one surface. The diffusion surface is formed using a diffusion groove(15) formed concavely toward the inner side in the other surface. The light diffusion protrusion is desirable to be molded by being etched in a hemi spherical shape. The width of the diameter of the diffusion groove becomes narrower as getting closer to the inner side.
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