The Perfect Illusion!
Texts floating in mid air – images that stand out in front of the scenery – movies that are within grasp.
In principle, a wide variety of materials are possible in the event sector for the presentation of virtual content and thus also for the creation of interactive worlds. If holographic effects are desired, a high degree of transparency must be ensured.
As the very first step towards holographic projections, John Henry Pepper invented the so-called "Pepper's Ghost Effect" in 1860. This effect has been used and developed frequently since then, but is relatively elaborate in its construction: in this installation, a person in a pit behind the edge of the stage (analogous to the orchestra pit) was illuminated so that he or she was reflected on the opposite side of the glass pane - the reflection of a white paper or an envelope on the dashboard of a car is in principle something similar.
In recent decades, the living person has been replaced by a projection onto a projection film lying on the floor and the glass pane has been replaced by a highly reflective and transparent film. An LED wall lying on the floor and a Pepper's Ghost film stretched over it at a 45° angle works the same way in principle. Monitors or flat screens in different sizes are also often used for this effect.