Thin plates of ferroelectric ceramic in combination with transparent conductive and photoconductive films have been used to form device structures that can store a real image as a spatial variation in birefringence. This image can be viewed directly by suitably polarized transmitted light or projected onto a viewing screen. The stored image is erasable by the application of appropriate combinations of light and electric fields.
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Meitzler et al. (1970) studied this question.
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