Apparatus for displaying three-dimensional image by using pockels readout optical modulator.

摘要

An apparatus for displaying a three-dimensional image of a plurality of tomographic images by storing pictorial information of a tomographic image in an image converting element (6), forming interference fringes between a reading light beam (D) which is transmitted through the image converting element and is modulated (2) in accordance with the pictorial information stored therein and a reference light beam (E), and recording the interference fringes on a photographic plate (16). The above operation is repeated for successive tomographic images and then the photographic image is developed to form a hologram of superimposed tomographic images. A three-dimensional image is reproduced by projecting the reference light beam onto the thus developed photographic plate. According to the invention, the image converting element is formed by a Pockels readout optical modulator (6) and an intensity and position of a coherent light beam is modulated in accordance with the pictorial information of the tomographic image. The thus modulated coherent reading light beam is made incident upon the Pockels readout optical modulator. The coherent writing light beam having a high intensity is modulated in accordance with the pictorial information, so that the tomographic image stored in the Pockels readout optical modulator (6) has high contrast and resolution and therefore, it is possible to reproduce a three-dimensional image having very high resolution and contrast. <IMAGE>