#HTE

“Holographic” Displays Made from LED Fan Blades

This is a “holographic” display made of fan blades:

Each blade contains hundreds of LEDs:

Here’s an explanation of how it works:

And here’s a demonstration model from HyperVSN, one of the larger players in the space, with each individual fan costing upwards of $3,000:

The thing no one mentions in any of the videos is: How noisy is the thing? Then again, since fans moving at a steady rate produce a predictable soundwave, I suppose it would be easy enough to rig up a noise-canceling speaker.

https://www.core77.com/posts/102389/Holographic-Displays-Made-from-LED-Fan-Blades