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US 5,309,281 AGranted
Foldable stereoscopic viewer
OwnerChris R. Roverinventor
Life of this patent
Estimating the term…
Abstract
A frame supports stereoscopically paired pictures and a pair of lenses for viewing the pictures. The frame is foldable to vary the distance between the lenses and the pictures so that an observer can focus on the pictures in accordance with the observer's particular optical characteristics, whereby a three-dimensional picture image is viewed. The distance between the viewing lenses can be varied to accommodate variations in the distance between the eyes of different observers. The entire viewer can be folded flat for storage and shipping convenience.
Claims10
A foldable stereoscopic viewer, comprising:
- a continuous frame in the form of a regular hexagon including six substantially longitudinally extending panels each of which is creased at its opposite sides so that the frame is foldable outwardly and inwardly;
- the plurality of longitudinally extending panels including a front panel and a rear panel;
- a first member having an inner and outer surface and integral with the front panel, and extending substantially transversely across the top and beyond the opposite sides thereof, and carrying a pair of eyepieces disposed in spaced relation to each other;
- a second member having an inner and outer surface and integral with the rear panel, and extending substantially transversely across the top and beyond the opposite sides thereof, and carrying a pair of stereoscopically paired pictures, said pictures and eyepieces being in viewing alignment;
- the first and second members being displaced away from and toward each other when the frame is folded outwardly and inwardly, respectively, for allowing an observer to focus on the stereoscopically paired pictures in accordance with the observer's particularly optical characteristics, to present a three-dimensional image to the observer;
- the front and rear panels each having an inner and outer surface;
- a bracing member having one end secured to the inner surface of the front panel and an opposite end secured to the inner surface of the rear panel;
- the bracing member being creased so as to be foldable with the frame;
- the inner surface of the second member including a first pair of parallel rails in longitudinal spaced relation near one end thereof and a second pair of parallel rails in like spaced relation near the opposite end;
- each of the first and second pairs of parallel rails receiving one of the stereoscopically paired pictures;
- and
- the opposite end of the bracing member secured to the inner surface of the rear panel forming a ledge which prevents the stereoscopically paired pictures from dropping through the respective pairs of rails receiving said pictures.
9 more elements
A foldable stereoscopic viewer, comprising:
- a continuous frame in the form of a regular hexagon including six substantially longitudinally extending panels each of which is creased at its opposite sides so that the frame is foldable outwardly and inwardly;
- the plurality of longitudinally extending panels including a front panel and a rear panel;
- a first member having an inner and outer surface and integral with the front panel, and extending substantially transversely across the top and beyond the opposite sides thereof, and carrying a pair of eyepieces disposed in adjustable spaced relation to each other to accommodate the difference in eye spacing of different observers;
- a second member having an inner and outer surface and integral with the rear panel, and extending substantially transversely across the top and beyond the opposite sides thereof, and carrying a pair of stereoscopically paired pictures, said pictures and eyepieces being in viewing alignment;
- and
- the first and second members being displaced away from and toward each other when the frame is folded outwardly and inwardly, respectively, for allowing an observer to focus on the stereoscopically paired pictures in accordance with the observer's particularly optical characteristics, to present a three-dimensional image to the observer.
3 more elements
Dependencies are inferred from the claim text.