| 摘要 |
New translucent projection screen. Comprises transparent plate with a diffusing face, and a layer of transparent elastic material between it and a second similar transparent plate parallel to the first and close to it, the material being in contact with at least part of each of the faces to permit movement on a closed path of one of the plates in relation to the other in order to suppress scintillation in the projected images. - The plates may be of glass with a light diffusing coating having a different refractive index and the elastic material may be a gel, a silicone rubber or a rubbery adhesive which is transparent and of different refractive index from the glass plates. - The use of the screen reduces visual fatigue.
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