Projected image alignment method and apparatus

Details Projected image alignment method and apparatus Projected image alignment method and apparatus

1989-06-13

1991-03-05

Gellner, Michael L.

Optics: motion pictures

Stereoscopic cameras and/or projectors

352 62, 352 86, 352 63, 355 22, G03B 3500

Patent

active

049972707

ABSTRACT:
Projected image misalignment in a 3-D motion picture projector is corrected by shifting one of the projection lenses in accordance with a predetermined program during presentation of the motion picture. In one embodiment, manually initiated control signals for adjusting the lens shift are recorded in a memory and can be subsequently retrieved for automatically controlling lens shift. In another embodiment, lens shift is controlled by reading predetermined witness marks on the film.

REFERENCES:
patent: 2827823 (1958-03-01), Shurcliff
patent: 2854883 (1958-10-01), Jones et al.
patent: 3191493 (1965-06-01), Mainardi et al.

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