Photocopying – Contact printing – Light boxes
Patent
1977-02-03
1978-08-22
Wintercorn, Richard A.
Photocopying
Contact printing
Light boxes
354125, 355 22, G03B 3500
Patent
active
041092627
ABSTRACT:
A photographic camera for three dimensional photography. A housing has an opening to the interior for light rays. The photosensitive material is immovably located in communication with the interior of the housing at a location during exposure time. An optical system in the housing projects light rays, which are received through the opening from a scene to be photographed, along an optical path to the location, and the path has a first position therealong. The optical system comprises a lenticular screen extending across the path at a second position farther along the path from the first position and has, on one side, a plurality of elongated lenticular elements which face in the direction from which the light rays are being projected and have an opposite side facing in position for contact with the surface of the located photosensitive material. Light rays are blocked at the first position. An aperture is movable transversely across the optical path at the first position for exposing the light rays sequentially to the photosensitive material moving across the screen in a direction normal to the elongation of the lenticular elements. An arrangement is provided for so moving the aperture for a predetermined time for exposure while simultaneously and synchronously moving the screen, substantially throughout the predetermined time for exposure, and in substantially the same direction as the light rays sequentially expose the photosensitive material. As a result a substantially continuous unreversed image of the scene is exposed on the photosensitive material. An arrangement is included for moving the screen relative to the location for the photosensitive material, initially prior to the exposure time, to thereby cause any deformations of the photosensitive material to be smoothed out prior to the exposure time.
REFERENCES:
patent: 3503316 (1970-03-01), Takano et al.
patent: 3521947 (1970-07-01), Jones
patent: 3528736 (1970-09-01), Jones
patent: 3590712 (1971-07-01), Ataka
patent: 3596584 (1971-08-01), Jones et al.
patent: 3678833 (1972-07-01), Leach
patent: 3683772 (1972-08-01), Jones
patent: 3685413 (1972-08-01), Matsunaga et al.
patent: 3731606 (1973-05-01), Geoffray
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