| 摘要 |
PCT No. PCT/GB86/00479 Sec. 371 Date Apr. 6, 1987 Sec. 102(e) Date Apr. 6, 1987 PCT Filed Aug. 7, 1986 PCT Pub. No. WO87/00954 PCT Pub. Date Feb. 12, 1987.A holographic display apparatus, for displaying an image embodied in a hologram, has a hologram support for receiving and supporting a hologram in a viewing position, a reference light source disposed adjacent a boundary of the hologram support in a predetermined baffled position such that light emanating from the source cannot fall directly onto a hologram supported on the support, and at least one light reflecting surface disposed adjacent that boundary of the support and arranged to direct light from the source onto a hologram supported on the support so as to be incident on the hologram at a predetermined acute reference angle, which angle corresponds substantially to the angle of incidence relative to the hologram of a predetermined reference light used in producing that hologram. The at least one reflecting surface may be planar, or curved in one or more directions. Holograms in a variety of different forms may be illuminated. |
