Abstract: A method is disclosed of forming apparatus for use in a three stage integral photography process that includes a camera for taking the integral photographs; printing apparatus for converting the psuedoscopic negative produced by the camera into an orthoscopic positive; and a viewing screen for the positive. The apparatus comprises arrays of lenslets formed on transparent plastic sheets and plates with arrays of apertures on the same centers as the lenslets and the elements must have very precise dimensional relationships to one another. In the method, all of the elements are produced by symmetrical, multi-stage processes using the same array of elemental mold parts in the first stage in the process. One elemental mold part or "Janus plug" is provided for each optical element in the array.