title: The experimental production of synthetic holograms.
abstract: On the assumption that a hologram is a superposition of zone plates, one from each point in the object, the authors have produced, by sequential printing of zone plates, holograms which reconstruct a pattern of several bright points on a dark field. The pattern may be prescribed in advance and may be three dimensional. The validity of the method is examined mathematically.
authors.forename: W J
authors.initials: WJ
authors.lastname: Siemens-Wapniarski
authors.forename: M P
authors.initials: MP
authors.lastname: Givens