THREE-DIMENSIONAL DISPLAY APPARATUS

摘要

Apparatus for forming and displaying a three-dimensional image of a three-dimensional object by projecting a plurality of two-dimensional photographs of successive sections of the object. The photographs (33) are moved through an optical path in a predetermined order and at a predetermined rate and are illuminated successively. A projection screen (54) located in the optical path has a configuration so proportioned that as the screen revolves its image receiving surface successively occupies locations substantially normal to the projection beam and spaced from each other so that the images of the individual sections when sequentially projected in suitably short flashes appear to have the same relative orientation in space as the corresponding sections of the object. The illuminating means (61) may omit the illumination of certain photographs of the series so that only selected photographs are reproduced on the screen (54). An optical mask (92) may be used to block certain portions of the projected photographs. A changeable film holder (35) is provided for retaining the film strip (33) and protecting it.