| 摘要 |
A picture is presented simultaneously in any number of directions by arranging a grid (5) of parallel lamellae in front of the picture (1) - viewed from the position of an observer. An illuminating means can be fixed outside an image viewing part (120) which is rotatable about an axis (56) and comprises at least one light-reflecting part (4; 6; 16). At least one deflecting part (2; 3; 13; 24; 25) for deflecting light beams (10) - in particular for guiding the light beams (10) into the rotatable image-viewing part (120) - is provided between the illuminating means and the light-reflecting part (4; 6; 14), in addition to any lens system between the light source (32) and the deflecting part (2; 3; 13; 24; 25), or the axis of rotation (56) passes through the grid (5). The deflecting part may comprise an independently rotatable light-guiding part (2, 130) for rotating light beams about an axis parallel to the beam direction, in particular a Dove, Schmidt or Abbé rotating prism (2) or an angular mirror arrangement (130) having analogous inverting characteristics - and the picture (1) can be fixed so that it rotates rigidly, and is optionally continuously changeable by means of a picture control (70a). A projection screen (6) - preferably a transilluminatable one - is arranged in the beam path in particular in the image projection plane - of the light beams (10) in the plane of a baseplate (7) of the viewing part (120) or (as known per se) at right angles to this, and a lens system (8) - preferably having an (optionally remote-controllable) focusing means (9) is arranged after the deflecting part. If necessary, a deflecting part (3a, 25), connected to the viewing part (120) so that it rotates rigidly with the latter, deflecting the light beams (10), in particular through about 90.degree. in each case, is provided instead of the rotating prism or in addition to it, and at least one mirror, in particular several mirrors (4n', 4n'') arranged at suitable angles with respect to one another, for projecting the particular image onto a plane lying in the axis of rotation, is or are provided, preferably in the viewing part (120). (Fig. 12) |
