| 摘要 |
A video projector employs an acousto-optic deflector for moving a horizontal line of pixels vertically to form an image on a remote screen. Because the pixel images are formed from parallel beams, rather than by reimaging a line of pixel images on a vertical deflector, the image formed is in focus at all screen distances. The horizontal line of pixels is formed from a single laser beam which is expanded laterally and passes through individual intensity modulators before being aimed at the vertical deflector. The horizontal line of beams may be divided into zones, one above the other, and later reorganized into a single line at the vertical deflector, in order to reduce the size of the projector.
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