| 摘要 |
<p>A hologram display apparatus comprises a rectangular light box having a rainbow transmission hologram (16) mounted in an aperture (14) in one side wall. The hologram is illuminated by means of a linear light source (18) mounted within the box on an axis generally perpendicular to that of the hologram. Light from the source (18) passes through a condenser and/or holographic optical element (22), past baffles (24), and is reflected by an angled mirror (26) to the hologram. The mirror may either be planar or curved about an axis parallel to that of the light source.</p> |
