Method for creating a holographic screen that reconstructs uniformly magnified three-dimensional images from projected integral photographs

A method for making a holographic output array, to be used in a system for recording and projecting three-dimensional images, wherein,

• said holographic output array comprises a plurality of holographic optical focusing elements
• said holographic output array reconstructs the projected three-dimensional image;
• said system utilizes an input optical array and the holographic output array to magnify said three-dimensional images;
• the input optical array contains a plurality of image focusing elements therein;
• the holographic output array contains a plurality of image focusing elements therein of the same number and geometrically similar arrangement as the input optical array;
• all of the image focusing elements of both the input optical array and holographic output array have centers that are separated by distances;
• all of the image focusing elements of both the input optical array and holographic output array have focal lengths;
• the distances between the centers of the focusing elements of the holographic output array are the same multiple of the distances between the corresponding focusing elements of the input optical array, respectively, said multiple being equal to the magnification factor;
• the focal lengths of the focusing elements of the holographic output array are the same multiple of the focal lengths of the corresponding focusing elements of the input optical array, respectively;
• and,
• said three-dimensional images are magnified uniformly in all dimensions by a magnification factor,
• said method comprising:
• a) producing a recording reference beam of coherent light from a coherent light source;
• b) producing an object beam of coherent light from the same coherent light source;
• c) producing at least one focusing element of said holographic output array by using the reference beam and object beam to create a holographic optical focusing element;
• and,
• d) repeating the above steps until the desired number of holographic optical focusing elements comprising the holographic output array are produced;
• wherein:
• the holographic output array is prepared by exposing portions of a photographic plate incrementally until the entire array is produced;
• the portions of the photographic plate that were incrementally exposed are the focusing elements;
• and,
• each focusing element reconstructs a cylindrical wavefront.