| 摘要 |
A photographic film is provided which includes a plurality of film layers each responsive to a different range of light wavelengths. A wavelength filter layer is disposed over the film which is responsive to an electric field for passing different light wavelengths. In the preferred embodiment, the filter layer is composed of a nematic liquid crystal and a dichroic dye. A device such as a cathode-ray tube displays a light image upon the film. Circuitry is provided for selectively applying an electric field across the film for varying the color of the light images exposed upon the film.
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