| 摘要 |
A holographic display device for displaying a 3-dimensional image has a cylindrical casing and a horizontally-placed circular reflection-type hologram in order to project an upright orthoscopic real image having both horizontal and vertical parallaxes. The hologram may be illuminated by a point source of white light, preferably a high-efficiency light emitting diode, securely attached to telescopic or flexible means integrated into the holographic display device. The hologram may be rotated by an electric motor in order to display all sides of the holographic image. The means for mounting the point source of white light may have the same diameter as the cylindrical casing in order to slidably house the cylindrical casing. This invention relates to holographic display devices for displaying a 3-dimensional image, and the principal use of the invention is for optical decoration.
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