| 摘要 |
<p>An apparatus for displaying an image (5) in space and for providing a background image behind the projected image (5). The apparatus comprises an image generator and optical system (1, 2, 3, 4, 7, 12, 14) for projecting an image of an object (1) in an image plane (5) suspended in space. A partially light-transmissive screen (11) is located between the image generator and optical system (1, 2, 3, 4, 7, 12, 14) and the projected image (5). The screen (11) comprises a pattern of juxtaposed light-transmissive regions (15), through which the image (5) is projected, and regions (13) which are not light-transmissive (i.e., substantially opaque areas or reflective surfaces). The background image is printed, or painted, on the opaque areas (13) on the side of the screen (11) remote from the image generator optical system (1, 2, 3, 4, 7, 12, 14). The screen may be made by printing the background image on opaque areas (13) on a translucent or transparent film (12), or by printing the background image on a foraminated or perforated opaque sheet.</p> |
