| 摘要 |
Transparent sheets (1a, 1b, 1c) exemplified by three layers of a synthetic resin are superposed, and images (Pa, Pb, Pc) are drawn on the transparent sheets (1a, 1b, 1c), respectively. These images (Pa, Pb, Pc) are drawn by breaking down a material image, for example, and serve as a front image (Pa), an intermediate image (Pb) and a back image (Pc). The individual sheets (1a, 1b, 1c) are independently vibrated synchronously in a common direction by using drive means. Especially, the amplitude of the front sheet (1a) is made large whereas the amplitude of the back sheet (1c) is made small. If these vibrations are continued for a period of several times per second, a moving-picture feeling can be expressed to give a perspective sense and a lively motion to the screen.
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