Stereoscopic motion picture large scale scanning reproduction me

Optics: motion pictures – Stereoscopic cameras and/or projectors – Interlineated

Patent

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352 43, 352 81, 353 10, G03B 3500

Patent

active

041769236

ABSTRACT:
The invention involves theatre size stereoscopic motion pictures without glasses and without restricted viewing zones and which can be photographed with a standard motion picture camera. Relative lateral motion is required between the camera and the scene. The film is run horizontally through a scan projector in which a given scene on the screen is constructed from several adjacent scenes on the film. The scanned stereoscopic picture can be viewed from different perspectives. A central 3-facet scanning projector of small mass and radius projects over a 120.degree. sector onto triangular elemental mirror scanners causing the node of the image of the projection lens to sweep a large radius about the projector center. From the scanner the sweeping optical axis of the projector passes through the rotation axis where the picture is imaged onto a concentric semi-specular screen. Three vertical concentrically moving aerial viewing slits are generated 120.degree. apart and at one-third screen radius and rotate in the same direction as the scanning projector node image giving a picture repetition rate of 48 Hz. The audience views the stereoscopic picture as constructed of vertical slices of several pictures generated from the horizontally moving vertical aerial slits.

REFERENCES:
patent: 3324760 (1967-06-01), Collender
patent: 3743394 (1973-07-01), Meszlenyl
patent: 3815979 (1974-06-01), Collender
patent: 4089597 (1978-05-01), Collender

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