Abstract:
In a preferred embodiment, there is a film reel having a film-threading film-retaining core, the core containing free-space for threading a mounting-end of a film to be would on the reel, and across at least a portion of the core's free space there being a floor mounting the outer reel structure onto the inner core structure that is mountable on a driving spindle, with spaced-apart posts extending upwardly from the floor and the posts being spaced from each of the mounting spaces inside core walls and the space's inside surface of the outside walls of the core, with each of the posts anchored by anchoring structure connected to the core's inside core structure, the upwardly extending posts having a large exaggerated arcuate surface providing large surface area for contact with film threaded thereagainst, there being a flange extending angularly radially inwardly from the inside surface of the outside wall of the core, the flange extending between second and third posts and extending radially inwardly sufficiently to press against the threaded film when threaded within the threading space of the core such that the pressed threaded film is held tautly.
Abstract:
An apparatus and method for continuously storing a strip of material in a coil, such as a multi-hour motion picture theatre film. The apparatus includes a flat platter with drive means for rotating the platter, a cam mounted for rotation with the platter and having a cam track with alternating sections of greater distance and lesser distance from the center of the platter, and means for applying the incoming strip to the periphery of the coil on the platter. The applying means includes a cam follower for engaging the cam track to position the strip in a coil on the platter having inwardly directed rounded cusps with arcuate outer peripheries therebetween. In order to reduce or eliminate tension in the strip, a roller is positioned at the outer periphery for urging the coil inward as the roller contacts the coil. Further improvements include provision of a high friction surface on the platter for enhancing arc formation and a low friction surface for enhancing cusp formation, and a takeoff roller assembly positioned above the platter for improved strip takeoff operation.
Abstract:
Apparatus for recording a sequence of frames through a single lens system along different optical axes which exit the lens system along a common axis, and focus at a recording station, and which converge at a predetermined location in a scene to be recorded, comprises a recording station for film, or a photoelectronic scanner for video, a recording control providing for sequentially recording scenes focused at the recording station, and a lens system having a field of view encompassing scenes to be recorded and defining an optical path along which light rays pass from a scene and exit the lens system on a common axis to the recording station. A light shifting device is arranged to shift the optical path cyclically within the lens system between at least two different non-parallel axes which intersect at a predetermined location in a scene viewed by the lens system. Focus control provides for dynamically changing the intersection location of the axes of the different optical paths as the recording of scenes proceeds. The light shifting device may include a light refracting member or an iris piece which is shifted between different postions relative to the lens system axis in cyclic fashion synchronized to the recording control.
Abstract:
An apparatus and method for showing motion in a single color photograph in which motion of an object is shown by displaced images of the object in different colors. The scene to be photographed is illuminated by a light source including a plurality of light units emitting light of differing spectral composition. The light units are individually and sequentially activated, the light emitted from all of the units appearing to be emitted from substantially the same location. The flashing of the light units is controlled by a timer. The resulting photograph shows the non-moving objects in a color which is the composite of the spectral composition of all of the light units, typically the natural color. The movement of an object is shown by a spaced series of sharp images of that object in a variety of colors. The color sequence corresponds to the sequence of the flashes of the light units.
Abstract:
Three dimensional viewing achieved through use of multiple lens camera with included erector lens which yield a multiplicity of side by side medium-carried-images with provisions for some overlap and subsequent projection of said images by means of a plurality of spaced parabolic mirror reflectors on opposite sides of a diffusion screen, said reflectors being optically focused and mutually arranged to yield an ultimate, reflected, virtual image of three dimensional character over a relatively wide viewing range occupied by a plurality of viewers. System adapted for home television or commercial movie (cinema) projection.
Abstract:
An image viewing device is provided with movable projectors which superimpose illuminated marks on the image. Each projector can signal its location relative to a rest position and, by aligning the illuminated marks with selected features on the image, the distance between the features can be determined and displayed. Signal storage means permit comparisons between successive measurements. The viewing device can translate and rotate the viewed image so that the selected features can be aligned with the travel direction of the movable projectors.
Abstract:
A stereo photographic measurement system having two wide angle lenses conted to a high speed motion picture camera by fiber-optic imaging bundles, and a target system, the camera and lenses being mounted upon one object and the target being mounted upon another object subject to motion relative thereto within the overlapping views of the lenses. In one embodiment head motion relative to the subject's torso during parachute opening is measured by this system with the target mounted on the back of the head and the lenses mounted near the base of the neck. Measurements of target position in each frame of stereo film by comparison of position of squares on the target are used to calculate head motion with respect to the upper torso.
Abstract:
A cartridge handling device adapted to be loaded with a cartridge having a roll film wound therein for feeding out the film from the cartridge is characterized by a misloading preventing member provided in a cartridge mount of the device and engageable in an opening formed in the side face of the cartridge toward the proper direction of loading to thereby permit the cartridge to be loaded as oriented only in the proper direction.
Abstract:
A continuous loop film projecting apparatus whereby film from a projector is received on a platter having pneumatic or mechanical means to decrease the friction on the film as a result of the film rubbing against the platter surface. A blower located beneath the platter forces air through a series of holes or jets in the platter, lifting the edge of the film enough off the platter to decrease the tension on the film and help prevent the film from breaking. Instead of forcing air through holes in the platter to lift the film, the platter may have slots extending almost the width of the platter with blades attached to the bottom of the platter underneath the slots, the blades projecting through the slots as a roller on the blade contacts a camming surface. The same results are achieved with the blade/cam combination, or mechanical means, as with the forced air, or pneumatic means, namely the film is momentarily lifted off the platter thereby reducing the friction on the film and decreasing the possibilities of the film breaking or becoming damaged.
Abstract:
A film support element assembly is disclosed, primarily for supporting film in relation to a projection aperture in a motion picture projector having a rolling loop film transport mechanism. In a preferred embodiment the film support element is a so-called "field flattener" and has a cylindrically curved surface over which successive frames in the film are laid by the mechanism. Wiper elements are provided above and below the film path and the lens element can be displaced to bring a fresh portion of the surface into the film path. At the same time, the wiper elements remove debris from the surface. The wiper elements are removable for disposal of collected debris.