| 摘要 |
PURPOSE:To prevent generation of a moire pattern, and also to form a good picture by reducing a hot spot, by providing a light diffusing layer on one face of a Fresnel lens sheet, diffusively providing the particles for scattering the light on the inside of a lenticular lens sheet, making the light nontransmission part to a light absorbing property, and also combining both of them. CONSTITUTION:A light diffusing layer formed by sticking a film 3 into which fine particles for scattering the light are kneaded, onto a lens face of a Fresnel lens sheet 1, and a lenticular lens sheet 2 which has diffused fine particles for scattering the light, in its inside, and has a projection type black stripe 25 are combined, by which a transmission screen is obtained. According to such constitution, it is possible to obtain a transmission screen by which a moire pattern becomes no problem and also a hot spot is not minded. This screen has also an effect by which scattering of light in the lenticular lens is not striking in a picture on the screen even in case when slight distortion is left in forming of the lens. |
