A collection of 56 holograms commercialized in Germany in the 1990s.
The collection presents various figures in 3-D, including a funny cat, the Twin Towers, William Shakespeare, the Silver Surfer, a piece of the Berlin Wall, a toilet, a Porsche and a bust of Michelangelo.
The development of hologram technology started in 1962, when Yuri Denisyuk, in the Soviet Union, and Emmett Leith and Juris Upatnieks at the University of Michigan in the United States, developed laser technology that recorded 3-D objects. Silver halide photographic emulsions were used for the recording medium, though the clarity of the objects wasn’t perfect at the time. But, over time, new methods involving the conversion of transmission with the refractive index allowed holograms to be improved.