Optics: motion pictures – Special effects – Depth illusion
Patent
1979-10-19
1981-10-13
Hayes, Monroe H.
Optics: motion pictures
Special effects
Depth illusion
352 43, 352 92, 352140, G03B 2132
Patent
active
042945232
ABSTRACT:
This invention utilizes a series of two-dimensional photographs of successive cross-sections of an object. The photographs are arranged on a film strip in the order in which the successive sections appear in the object. The film strip is transparent and is intermittently illuminated as the successive frames of the film strip move across an optical path. A projection screen in the optical path is moved with respect to the optical path so that as each successive photograph is illuminated, that photograph is projected onto the screen at a successive position and so that each photograph as projected on the screen appears more remote from an observer than the preceding one. Thus there is formed on the screen a series of images which appear to an observer having persistence of vision to be a composite three-dimensional imgage. The illuminating means may omit the illumination of certain photographs of the series, so that only selected photographs are reproduced on the screen. An optical mask may also be used to block certain portions of the projected photographs. A changeable film holder is provided for retaining the film strip and protecting it.
REFERENCES:
patent: 3376093 (1968-04-01), Freudenschuss
patent: 3428393 (1969-02-01), Montebello
patent: 3462213 (1969-08-01), Montebello
patent: 3515473 (1970-06-01), Theer et al.
patent: 3649110 (1972-03-01), Takahama
patent: 3772978 (1973-11-01), Mito
patent: 3781098 (1973-12-01), Heiniger et al.
patent: 4141629 (1979-02-01), Mattes
Kretzschmar Robert O.
Walz Gregory J.
Woloshuk Edward A.
Hayes Monroe H.
The Zyntrax Corporation
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