Display holography on the rise.(EDITORIAL)

We feel for Nick Hardy and Valerie Love of OpGraphics, the British company that has listed its DuPont photopolymer hologram production equipment for sale on eBay. Op has been producing display holograms for the gift and promotional trade since 1983, originally on Agfa silver halide films, then in the 1990s Nick Hardy started working with DuPont's holographic photopolymer, partly because Agfa ceased production of its holographic films, partly because the photopolymer reflection holograms had lower noise and were more light efficient. Unfortunately, when DuPont Authentication Systems was established as a joint venture with Label Systems Inc, the company decided to restrict the …