Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Including plural heating steps
Patent
1984-12-10
1988-03-22
Corbin, John K.
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Including plural heating steps
350167, 350320, 354115, 264 24, G02B 2722, G02B 2700, B29D 1100, G03B 3508
Patent
active
047324538
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. The plugs consist of hexagonal-sided bars, each having one end formed with a domed side used in the formation of the viewing screen and an opposite cylindrically recessed side used to receive spherical inserts for forming the camera array and annular bushings used to form inserts in the camera/printing apparatus.
REFERENCES:
patent: 2854337 (1958-09-01), Pearson
patent: 3365524 (1968-01-01), Thompson et al.
patent: 3503315 (1970-03-01), De Montebello
patent: 3584369 (1971-06-01), De Montebello
patent: 3724924 (1973-04-01), Lenfant et al.
Buck Howard S.
de Montebello Roger L.
Globus Ronald P.
Corbin John K.
Integrated Images, Inc.
Lemmo Vincent J.
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