Image displaying device

Details Image displaying device Image displaying device

1996-02-13

1997-03-04

Gellner, Michael L.

Optics: motion pictures

With framing and/or travel ghost elimination

352166, G03B 2146, G03B 100

Patent

active

056084749

ABSTRACT:
An image displaying device which is able to prevent the occurrence of fluctuations in the picture which is projected on the screen, even if some positional fluctuations have occurred in the movie film. The optical axis correcting means is provided on the optical path of the transmitted light which has been obtained from the light source via the movie film, and also the detecting means is provided for detecting the quantity of the displacement from the base position at the time the movie film has stopped on the basis of the travel-synchronizing holes which have been formed in the longitudinal direction of the movie film, whereby the optical axis correcting means is able to change the angle of the optical axis of the transmitted light, according to the result of detection obtained from the detecting means, on the basis of drive controlling by the driving means. As a result the optical axis can be corrected. Thus, an image displaying device can be realized which is able to prevent the occurrence of fluctuations in the picture which is projected on the screen, even if some positional fluctuations have occurred in the movie film.

REFERENCES:
patent: 5082357 (1992-01-01), Haas et al.

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