| 摘要 |
An optical projector in which the light beam is projected from a light source through a lens system and a slide onto a screen, the slide having two light-transmitting walls containing two or more immiscible fluids, at least one fluid being colored and at least one of the walls of the slide being flexible so that interplay between flexible wall and the fluids causes relative motion between the fluids, this slide being supported in a slide carrier means which are arranged to be moved, either rotated around an axis or reciprocated, by movable means so that the light beam projects different parts of the slide into the screen to give changing colored images.
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