Viewer/projector for display of 360 degree holographic film cassettes

DETAILED DESCRIPTION The invention claimed is: 1.
A cassette for storage, handling and display of holographic film prerecorded in an arcuate film configuration at least partially surrounding the recorded object at a prespecified fixed radius, said cassette comprising first and second film spools, a length of said holographic film extending between said film spools, and a frame including spaced end portions mounting said spools for free rotation about spaced parallel axes on a common plane and a central portion affixed to and rigidly extending between said end portions on one side of said plane, said central portion including first means providing an arcuate film path extending between said spools at a fixed uniform radius of curvature equal to said prespecified radius, with said radius of curvature being centered on a side of said plane opposite said path, and second means providing a through window for illumination of film extending between said spools from a direction transverse to said path.
2.
The cassette set forth in claim 1 for storage, handling and display of film of predetermined width wherein said first means comprises opposed arcuate channels for receiving and guiding laterally spaced edges of said film.
3.
The cassette set forth in claim 2 wherein each of said spools comprises an axial body and a pair of circular flanges radiating from axial ends of said body, and wherein said frame comprises opposed inner and outer sections including means for loosely capturing said circular flanges in assembly such that said spools are free to rotate.
4.
Apparatus for displaying images from holographic film prerecorded in an arcuate film configuration at least partially surrounding the recorded object at one of at least two prespecified fixed recording radii, said apparatus comprising means for receiving said film including means for holding at least a portion of said film at said one of said at least two prespecified fixed recording radii, a source of an illumination light beam, a plurality of mirrors for directing light along a light path from said source onto said portion of said film, and means for adjustably orienting at least one of said plurality of mirrors to orientations with respect to others of said mirrors in correspondence with said at least two recording radii so as to vary the length of said light path from said source to said film between at least two predetermined lengths corresponding to said at least two recording radii