Stereoscopic zoom lens system for three-dimensional motion pictures and television
AssigneeStereoGraphics Corporation
InventorLenny Lipton
Life of this patent
Estimating the term…
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AssigneeStereoGraphics Corporation
InventorLenny Lipton
Estimating the term…
Paired movie cameras, each having synchronized movements and in phase shutters, are provided with focus and zoom optics of identical, but conventional and commercial manufacture. The paired lenses are first rotated relative to one another to obtain a coincidence between the centration vector for each lens for either zoom or focus. Once the centration vectors are aligned identically on a polar basis, mounting to the camera with provision for synchronous zoom between the respective cameras thereafter occurs. Typically, and before each stereo shooting, the zoom optics are set to a maximum magnification and registered to the appropriate distance with the lens finders and reticules. Upon change of the focus and/or zoom setting, a variable prism affixed to one camera is moved relative to the remaining camera to maintain identical centration between the respective lens cameras. This movement can be cam controlled or, microprocessor controlled using stepping motors or servo systems and can also occur either in relative pitch and yaw; or in relative camera lens translation. At a minimum, centration must be corrected so that resultant screen parallaxes for an observer will be maintained to within Panum's Fusion limit (about 1/10 of a degree in vertical plane and 2/10 of a degree horizontal plane). A stereoscopic system which accommodates zoom lenses is disclosed.
A process for taking stereoscopic zoom three-dimensional pictures comprising the steps of providing first and second cameras spaced a predetermined distance apart for photographing the same scene;
Apparatus for the taking of stereoscopic three-dimensional pictures comprising in combination paired first and second spaced apart cameras, first and second zoom lenses mounted to said respective cameras for changing zoom in at least focus or magnification;
Apparatus for taking stereoscopic three-dimensional pictures comprising in combination paired first and second spaced apart cameras;
Apparatus for the taking of stereoscopic three-dimensional pictures comprising in combination paired first and second spaced apart cameras;
Apparatus for the taking of stereoscopic three-dimensional pictures comprising in combination paired first and second spaced apart cameras;
A process for taking stereoscopic three-dimensional pictures comprising the steps of providing first and second cameras spaced a predetermined distance apart for photographing the same scene;
A process for taking a stereoscopic three-dimensional picture comprising the steps of providing first and second movie cameras faced a predetermined distance apart for photographing the same scene;
Dependencies are inferred from the claim text.