Card motion picture projection system
AssigneePolaroid Corporation
InventorPhilip R. Norris
Life of this patent
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Abstract
A photographic projection apparatus for use with a film unit which has a plurality of images formed in a plurality of arcuate rows thereon supports the film unit between a light source and an optics system, both of which move along an arcuate path corresponding in shape to that of the arcuate rows of images on the film unit. The film unit is intermittently moved in a direction normal to the scan of the image rows so as to provide a sequential scan of the images in successive rows whereupon the images are projected onto a screen.
Claims24
Projection apparatus for use with at least one sheet of photographic film having images recorded thereon in a plurality of arcuate rows, said apparatus comprising:
- means for supporting said film sheet for movement in a direction substantially normal to said arcuate rows and in a given film plane;
- optical means for illuminating one of a row of images located at a projection location in said film plane and for directing light therefrom along a given optical path from said projection location to a viewing screen so as to project the image thereon;
- means for mounting said optical means for movement of at least a portion thereof along an arcuate path generally laterally of said first direction so as to thereby illuminate and direct light from any image in said row of images;
- and
- drive means for alternately moving said film in its said given direction and said portion of said optical means along its said arcuate path to thereby project one or more images from any of said plurality of arcuate image rows.
A method of projecting motion pictures for use with at least one sheet of film having images recorded thereon in a plurality of arcuate rows spaced along a given direction in said film sheet, said method comprising the steps of:
- supporting said sheet of photographic film at a given location in a given film plane;
- illuminating said images by moving a beam of illumination in an arcuate path conforming to said arcuate path of a row of images;
- directing light from said images by simultaneously moving at least a portion of an optical arrangement, for directing light from each image to a viewing screen, into registration with each image while the image is being illuminated;
- advancing said film sheet, at the completion of said arcuate row, in a direction substantially normal to said arcuate path and a distance equal to the distance between image rows to provide an unprojected image row in said spaced areas;
- and
- repeating said illuminating step, said directing step and said advancing step to project each of said image rows in said film sheet.
Dependencies are inferred from the claim text.