Photographic film with variable windows
OwnerRobert F. Wildeinventor
Life of this patent
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Abstract
A photographic film including at least two elongated film strips of photosensitive material each divided into a sequence of longitudinally spaced frames and arranged in face-to-face superposed relation with the frames of the strips being longitudinally aligned, one of the film strips having certain of the frames free of photosensitive material whereby light from an image to be photographed is adapted to pass therethrough for registry on the adjacent strip with the strips being reeled on a single reel.
Claims6
A film product comprising at least two elongated film strips of photosensitive material each divided into a sequence of longitudinally spaced frames and arranged in face-to-face, superposed relation with the frames of the strips being longitudinally aligned, one of said film strips having certain of the frames thereof free of said photosensitive material whereby light from an image to be photographed is adapted to pass therethrough for registry on the next adjacent superposed strip, said strips being wound on a single spool.
A film product comprising at least two elongated film strips of photosensitive material each divided into a sequence of longitudinally spaced frames and arranged in face-to-face, superposed relation with the frames of the strips being longitudinally aligned, one of said film strips having certain of the frames thereof free of said photosensitive material whereby light from an image to be photographed is adapted to pass therethrough for registry on the next adjacent superposed strip, said product being equipped with index openings along the longitudinal sides thereof for film movement in a camera, said product being reeled on a single reel so as to position said one strip first in the path of light from an image to be photographed.
Dependencies are inferred from the claim text.