Electric Power, How To Achieve 3D Holographic Projection?

In recent years, in large shopping malls or activities, we can always see the figure of "LED fans", whose appearance looks like a fan. When rotated, it can display a variety of patterns, and some can display dynamic 3D patterns, which is cool. Whenever we see them, it always stops people in their tracks and does a really good job in terms of publicity and promotion. So how does the Mapp Bright LED fan display patterns?

Technically, this so-called "fan" is just a fancy way to describe it. It's actually a "rotating LED light strip" and its technical name is holographic 3D Smart Flash Screen. When the power is turned on, the "blades" begin to rotate, presenting a series of cool and realistic 3D images as they rotate. At the same time, depending on the size and color of the pattern, the LED fan conceals its blades well, and since there's no frame or fixed screen, the dynamic picture looks as if it's floating through the air, which is very realistic.

The 3D smart display takes advantage not only of rotating LED hardware, but also of the transient phenomena of the human eye. For the rotating LED hardware equipment, simply according to the speed of the "fan blade" to calculate the change frequency of the LED light, light up different Mapp light at different times, will show different patterns. The so-called visual transient phenomenon refers to that when the human eye is observing the scene, the light signal is passed into the brain nerve, after a short period of time, the visual image does not disappear immediately after the end of the light, the human eye can still keep its image for about 0.1 to 0.4 seconds, this residual vision is called "afterimage", the phenomenon of visual is called "visual transient".

In general, one or more strings of LED lights are arranged on the blades of the fan, and it is assumed that there are 20 LED lights, numbered from 1 to 20 at a time, from the axis to the edges of the fan blades..In order to briefly explain the principle, we assume that when the fan speed is 60 revolutions per minute (the real speed is much higher), the human eye will appear the phenomenon of visual retention. Let's assume that the LED is 0 degrees above the fan at 0 seconds, so if you want to show the effect of 6:00 on the fan, the minute hand needs to point straight up and the hour hand needs to point straight down..It is necessary to light up the 1~20 minute hand at 0 seconds, light up the 1~10 hour hand at 0.5 seconds, light up the 1~20 minute hand at 1 second, light up the 1~10 hour hand at 1.5 seconds, and so on, so that the human eye will accept a complete 6 o 'clock image. For more sophisticated patterns, Mapp Bright LED fans will have a more sophisticated structure and programmed devices..By combining the rotation of the LED light strip with the phenomenon of visual retention, one will see the rotating LED fan appear in a dynamic 3D picture.