| 摘要 |
PURPOSE:To obtain a screen having a sufficient thickness without changing the angle of diffusion of light by providing a two-layered structure to a screen and by using an optical material with a lower refractive index as the material of one of the layers having the surface of a lenticular lens and an optical material with a higher refractive index as the material of the substrate layer at the rear side. CONSTITUTION:A substrate 4 made of a material having a higher refractive index than the material of a lenticular lens 2B is laminated on the rear side of the lens 2B, and black stripes 3 are formed on the substrate 4 to obtain a lenticular screen 1B. When the light enters the substrate 4 through the lens 2B, it is refracted and passes through the screen 1B as shown by the arrows. Accordingly, the thickness Tb of the screen 1B is increased without changing the angle of diffusion of light. |
