Photocopying – Projection printing and copying cameras – Distortion introducing or rectifying
Patent
1976-04-12
1977-05-17
Griffin, Donald A.
Photocopying
Projection printing and copying cameras
Distortion introducing or rectifying
35 2, 350167, 354125, G09C 100, G03B 2768, G02B 2700, G03B 100
Patent
active
040239020
ABSTRACT:
An indicia encoding system including an lenticular lens is provided for the pictorial encoding of indicia so that once encoded such indicia can be readily decoded using a viewer provided with a similar lenticular lens. The indicia encoding system comprises a carriage that is pivotally mounted on a base and has a rotation mode between an initial tilting position and a final tilting position. A photosensitive film holder with the lenticular lens affixed thereto is mounted onto the carriage and is slidably positionable, by a cam activated linkage, parallel to the pivotal axis of the carriage for exposing to light transmitted through an objective lens only selected portions of the photosensitive film during each carriage rotation mode. The objective lens is suppoted by a lens holder such that the lens is positioned inside a bellows that extends from the film holder to the lens holder. The additional length of the bellows extending past the lens to the lens holder increases the degree of the deformability of the bellows and thus allows the film holder to move more freely relative to the lens holder. Further the indicia encoding system comprises a holder for the indicia that is pivotally mounted and has a rotation mode synchronized to the rotation mode of the carriage. A picture of the indicia taken through the lenticular lens during the synchronized rotational modes of the film holder and the indicia holder causes the indicia as photographed to be illegible until viewed through a viewer having a lenticular lens.
REFERENCES:
patent: 1933953 (1933-11-01), Ames
patent: 2172283 (1939-09-01), Kirby et al.
patent: 3099195 (1963-07-01), Goodbar
patent: 3166625 (1965-01-01), Brumley
patent: 3178993 (1965-04-01), Ferris et al.
patent: 3937565 (1976-02-01), Alasia
Griffin Donald A.
West Point Industries
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