| 摘要 |
A front screen with a simple construction provides a wide viewing angle towards the desired direction, realization of an image projection system. The front screen that is utilized in present invention comprising a directional diffusing layer that transmits and diffuses incoming light from a specified angular range and linearly transmits incoming light from other angles, and a light-reflection layer that provides reflecting elements that scatters and reflects light. Furthermore, the light-scattering field of the reflecting elements in the light-reflecting layer in the up and down direction differs to that in the left and right direction and provides an anisotropic scattering property. Thereby, the construction is adjusted to the viewing condition.
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