| 摘要 |
PCT No. PCT/GB96/01378 Sec. 371 Date Feb. 23, 1998 Sec. 102(e) Date Feb. 23, 1998 PCT Filed Jun. 7, 1997 PCT Pub. No. WO96/41228 PCT Pub. Date Dec. 19, 1996A display device includes an image bearing device for generating one or more viewable images, optical elements for generating one or more viewing zones for viewing the viewable images, and an optical element with positive optical power. The elements are arranged and constructed such that the optical element with positive optical power forms a real image of the or each viewing zone and a virtual image of the or each viewable image, whereby the or each virtual image is visible to a viewer only when a light ray can be traced from the viewer's eye through the real image of an associated viewing zone, the optical element and the viewable image. The display may be an autostereoscopic display.
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