Ventilateur holographique: Etude et mise en œuvre

Abstract

Holographyis a revolutionarytechnology spread in manysectors, startingfrom the appearance of 3D imagingwithopticalholography up to the digital holography. it has nowdevelopedinto the production of holographicprojectors. Amongtheseprojectors; the hologram fans namely the helixes. These last are smallgemsthattransform a 2D image into 3D one, and allow us to projectany image or videowewant. Hologram fans are equippedwith LED diodes of differentcolors, placed on the blades of the fan. Due to the rotation of the fan and the persistence of the human’seyeretina, theycreate an image. The content isprocessed by a computer thatcalculates the shades to display, in order to create the 3D effectwhen the rotor spins. However, the deviceitselfremains invisible, and only the 3D hologramappears to the observer’seye. Wealsoencountered a challenge in displaying high-resolution images due to the use of low-intensity LED lights and the significantspacingbetween the LEDs. This particularlyapplies to commercial holographic fans thatfeature a PCB boardwith over 1000 LEDs spread over a 30cm length. This configuration imposes limitations on the resolution and precision of image display.