Pepper’s Ghost Holographic Projector With Single Reflector V.01.2

Prototype of The Pepper’s Ghost Projector V.01.2
(2014)
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Pepper Ghost Holographic Projector With Single Reflector V.01.2 is the following up mini-experiment after the experiment of The Pepper’s Ghost Projector V.01.1. It’s a small experiment about how to make a projector tool to create a simple Pepper Ghost illusion that quite popular to use in various performance since successfully implemented by John Henry Pepper on the theater performance during the production of Charles Dickens’s “The Haunted Man” in 1862.

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During the development of Pepper Ghost Projector V.01.1, there was several problems notes about the first model that need to be enhance on the development of Pepper Ghost Projector V.01.2, which are the source image device position flexibility, the mirror effect of reflection that creates the ghost image as a negative image and the last note is about the transparent sheet thickness in order to make proper ghostly image.

The first development is switching the cell phone position, which is moved from under the reflector structure to the top position, which allows the cell phone could change or moved easily without disturbing the position of projector box. At the same time, a mirror will be added as the reflector device new attachment and placed face by face with the cell phone, which is used to invert the source image as a negative image. Instead of reflecting the image from the actual source, the transparent sheet is actually reflecting the negative image on the mirror glass and inverting it back as a positive image.

The second repair made on the first model of Pepper Ghost projector is changing the former transparent sheet material in order to decrease the parallax that happened, which is replacing it with 0.5 mm thick acrylic or plexiglass sheet.

The last arrangement is made a box structure base on new concept schematic and painted the box with black matte color to prevent the image reflection from all the side of the projector to the main screen.

The conclusion from the model of Pepper Ghost holographic projector V.01.2 experiment is working as expected. It already solves all problems notes on the V.01.1 model, which are successfully replacing the source image device position, the addition of a simple image inverting mechanism, and solving the last note with a new material thickness to decreased the parallax effect. At this point, although The Pepper Ghost Holographic Projector V.01.2 schematic model became the simple basic projector with single reflector model for another development, it still has some development notes, such as:

  • The implementation of the inverting mirror will make the actual image reflected twice to create the ghostly image. It’s brought a distance effect between the reflector and its ghost image result, which is made the ghostly image reflected or appear on the transparent screen projected seems far behind the box.
  • Each material has their own behavior when reacting with lights, which will affect the pepper ghost result. During the experiment of pepper Ghost Holographic Projector V.01.2, the plexiglass sheet with 0.5 mm thickness that use to replace the former screen are made the projection image result seems glowing. Furthermore, it became new knowledge that every material will develop various effect on the Holograph projection image.