A stereoscopic viewer employs a film strip having two tracks of matched stereoscopic prints or frames which are wound in a magazine for reel-to-reel transport between spaced-apart reels and a binocular eyepiece slidably mounted on the magazine whereby the magazine can be shifted to view the frames in one track as the film is advanced in one direction by the reels and to view the frames of the other track as the film is advanced in the opposite direction or can be intermittently shifted to the adjacent track for correlating related information on the two tracks.
A device for viewing a series of stereoscopic views disposed in pairs in columns on a card (S) comprises a generally flat rectangular body (9). A first pair of channels (14) on the front of the body, disposed on each side of an axis of symmetry of the body, is adapted to permit the card to slide therein. A hinged plate (16) carries eyepieces (30, 31) and is hinged (17 to 20) to form panels (21 to 25). An end panel (24) is attached to the body (9). The other end panel (25) is mounted so as to slide in the second pair of channels (15). The center and lateral panels (21, 22, 23) occupy either a deployed position in which the eyepieces (30, 31) lie in a plane parallel to and appropriately spaced from the front surface (10) of the body (9), in line with windows formed in the body, or a folded position in which the plate (16) lies flat against the front surface (10).
A stereoscopic viewer and film cartridge combination is provided in which a viewer body having opposite sides, a front provided with a pair of viewing lenses spaced eye distance apart, and an open rear is removably combined with a cartridge for holding a film strip having stereoscopic pairs of pictures arranged along the length thereof. The cartridge is smaller than the open rear of the viewer so as to be receivable therein and withdrawable therefrom, and the viewer includes support means movable in the viewing direction and removably engageable with the cartridge so that the cartridge can be supported by the support means and moved to bring the film strip contained within the cartridge into the focal plane of the pair of lenses. The film strip preferably contains pairs of pictures separated by a distance which is greater than eye distance, and the cartridge includes means for forcing the film to traverse an undulating path between spaced apart viewing positions separated by eye distance.
A photographic film reader mountable on a person's head provides X and Y axis movement for a film lamina, illumination for one or more portions of the film and an image magnifier for the illuminated portions.
The stereoscopic film cartridge is for a stereoscopic viewer having binocular eyepieces and a film driving device. It comprises a thermally formed elongated film tending to roll around itself; and a housing for housing the film, the housing being provided with a first opening arranged to permit engagement of the film driving device with the film when the cartridge is mounted onto the stereoscopic viewer. The housing includes two opposite compartments and a guiding channel extending between the inlets of the compartments, for guiding the film between the inlets. The channel has a front panel provided with right and left adjacent viewing windows, the front panel having an inner surface provided with a first pair of upper and lower parallel projecting bands; and a rear panel comprising translucent means, the rear panel having an inner surface provided with a second pair of upper and lower parallel projecting bands facing respectively the first pair of bands.
An apparatus for providing stereoscopic effects includes a cassette and a projector. The cassette defines a chamber for enclosing tow strips of film. A first passage is in communication with the chamber and diverges into two second passages so that an edge is formed between the second passages. A first gear is mounted below the chambers. A second gear is engaged with the first gear. Two separate wheels are co-axially linked to the second gear. A plurality of teeth radially project from each wheel. The teeth engage with perforations which are defined in strips of film. When the first gear is rotated, the strips of film are fed from the chamber along the first passage by means of the wheels. The strips of film are then separated from each other by means of the edge and are respectively fed along the second passages. The projector has two pairs of transparent panels which define two third passages which are in communication with the second passages. Two chambers are in communication with the third passages for containing the strips of film. Two light sources project light through the pairs of transparent panels for providing illuminated images. The projector further uses two lenses through which light passes.
