Process of coding indicia and product produced thereby
OwnerAlfred V. Alasiainventor
Life of this patent
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Abstract
A printed sheet of material has indicia thereon in scrambled or coded form produced by operation of an auto-stereoscopic camera using a lenticular screen. The indicia which appear inchoate to ordinary vision, can be decoded or unscrambled by viewing the same through a lenticular screen matched to that used in the scrambling process.
Claims14
A process of producing with an autostereoscopic camera having a lens and a lenticular screen which are movable relative to one another in such manner as to form a parallax panoramogram in a combined image plane, a coded or unscrambled form from an original pattern, said process comprising the steps of:
- forming an image of said original pattern in said combined image plane of said lens and screen;
- spacing a photosensitive element away from said image plane but within the depth of focus provided by said screen and the effective lens aperture of said camera;
- exposing the spaced photosensitive element to said image while in the course of said relative movement.
A sheet having a coded or scrambled form of an original pattern made in accordance with the following steps:
- forming an image of said original pattern in the combined image plane of a lens and a graticule of an autostereoscopic camera;
- spacing a photosenstive element, supported by said sheet away from said original image plane but within the depth of focus provided by the effective lens aperture of said camera;
- and
- exposing said photosensitive element to said image while moving said lens relative to said graticule, so that said formed image of said pattern is recorded on said element as a parallax panoramogram which is in said scrambled form.
Dependencies are inferred from the claim text.