Image made on a photographic plate which, when viewed under the appropriate conditions, gives a three-dimensional image. A light-sensitive film is used but it is not a conventional photographic technique. Pictures are viewed either by reflected light, such as a hologram on a credit card, or by projected laser-generated beams of light.
Dennis Gabor (formerly Denes Gabor)
by Dr Lessing
1960s or 1970s?