Abstract My invention relates to photographing scenes and objects with the purpose of stereoscopic viewing of the reproduction without viewing aids at the eyes. The apparatus is constructed so that a group of stationary cameras or a single camera sequentially positioned at the progressive locations and arranged along a circular arc, aim their optical axes at a point on the opposite side of the same circle. The pictures photographed are then processed and arranged to be repeatedly and sequentially projected at a high frame rate by a stationary projector aimed at the same relative point as in the photographing of the scene or object. This aim-point is coincident with a reflective circularly cylindrical screen surface. The cylindrical obturating surface is part of a circle which contains vertical transparent slits. The observer looks thru a horizontally moving vertical slit to see a stereoscopic picture wherein the pictures for each eye are time progressively generated and different for each eye. Another embodiment of my invention uses rotating minute vertical reflective/dispersive elements in a cylindrical screen surface to reflect and direct the projected pictures to imaginary slits on the same circle containing the screen. For this embodiment no obturating surface is employed between screen and observer and the observer is not restricted in having the slit locus in front of his eyes. The slit locus may be in back of him with the result that the viewer may move quite close to the spatial image in the reproduction of a three dimensional scene.
Inventors
👤 R Collender
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-26 12:17
CPC Classifications
G; G03; G03B; G03B35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
286 words
The method of recording and reproducing stereoscopic views for observation by plural observers without visual aids at the eyes of said observers, comprising: a. Photographing multiple complete views of a scene from a plurality of consecutive sequential positions arranged along a photographing circle, the optical axes of the photographing cameras at the plurality of positions converging to an aiming point in the scene and on the opposite side of said photographing circle; b. Projecting the said multiple complete views in a consecutive sequential manner to a high gain screen on a projecting circuit from a high fixed frame rate projector, said projecting circle having a plurality of consecutive sequential view points corresponding to the said consecutive sequential positions of said photographing circle and located on the opposite side of said projecting circle from said screen, the projected view subtending angle measured from a view point on said projecting circle being equal to the photographing subtending angle measured at the camera on the photographing circle at the time of photographing; c. Providing a horizontally scanning vertical slit on the opposite side of said projecting circle from said screen and moving said vertical slit along said projecting circle past said view point locations; d. Synchronizing the projection of said multiple complete views from said fixed projector with the movement of said horizontally scanning vertical slit such that for a given view, at the time it is projected, the vertical scanning slit is in a position on said projection circle corresponding to the position of the camera on the photographing circle at the time the view was photographed; e. Repeating the scanning cycle at a rate sufficient to be within the period of persistence of vision of an observer.
Claim 2
Independent Claim
286 words
The method of recording and reproducing stereoscopic views for observation by plural observers without visual aids at the eyes of said observers, comprising: a. Photographing multiple complete views of a scene from a plurality of consecutive sequential positions arranged along a photographing circle, the optical axes of the photographing cameras at the plurality of positions converging to an aiming point in the scene and on the opposite side of said photographing circle; b. Projecting the said multiple complete views in a consecutive sequential manner to a high gain screen on a projecting circuit from a high fixed frame rate projector, said projecting circle having a plurality of consecutive sequential view points corresponding to the said consecutive sequential positions of said photographing circle and located on the opposite side of said projecting circle from said screen, the projected view subtending angle measured from a view point on said projecting circle being equal to the photographing subtending angle measured at the camera on the photographing circle at the time of photographing; c. Providing a horizontally scanning vertical slit on the opposite side of said projecting circle from said screen and moving said vertical slit along said projecting circle past said view point locations; d. Synchronizing the projection of said multiple complete views from said fixed projector with the movement of said horizontally scanning vertical slit such that for a given view, at the time it is projected, the vertical scanning slit is in a position on said projection circle corresponding to the position of the camera on the photographing circle at the time the view was photographed; e. Repeating the scanning cycle at a rate sufficient to be within the period of persistence of vision of an observer.