| 摘要 |
A lens array is arranged in front of the screen of an image display at a distance of S 1 . The lens array consists of lenses having focal lengths f 1 and f 2. The focal length f 1 and f 2 and the distance S 1 determine the forming positions of first and second imaging planes. The first imaging plane is formed at a position of distance S 3 from the lens array and the second imaging plane is formed at a position of distance S 2. More specifically, a pixel on the screen is imaged as a first imaging element of the first imaging plane at a position of S 1 +S 3 form the screen and a pixel on the screen is imaged as a second imaging element of the second imaging plane at a position S 1 +S 2 from the screen. A viewer can attain stereoscopic feeling when viewing them.
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