How does 3d led fan work?
In recent years, in large shopping malls or events, the figure of an "3D LED fan" has always been seen. Its appearance resembles a fan, but when it rotates, it can display various patterns,
Some can display dynamic 3D patterns, which are very cool and always make people stop and watch, playing a very good role in promotion and promotion.
3D fan screen, also known as 3D hologram advertising machine, holographic fan, 3D fan, etc., scientific name: 3D hologram intelligent dazzling screen.
The principle of 3D fan screen imaging is commonly referred to as "POV" (visual persistence) display technology,
The rotating display crystal constantly changes, utilizing the principle of visual persistence of the human eye to form a complete and continuous image, achieving a 3D holographic imaging effect.
The phenomenon of visual persistence means that when the human eye is observing the scenery, the light signal is transmitted to the brain nerve, which takes a short time. After the end of the role of light, the visual image does not disappear immediately. This residual vision is called "afterimage", and this phenomenon of vision is called "visual persistence".
Movies use this visual persistence to quickly transform static scenes into active images.
The 3D effect naked eye 3D fan screen utilizes this principle, which is a 3D effect that can be seen on the screen without wearing professional glasses,
It is small in size, low in power consumption, and has an extremely high turnover rate! One click transfer of mobile app, convenient and fast, creating the coolest visual effects.
Due to the fact that the area reached by the light bar is only one circle, the playback material also needs to be adjusted within the circular display area, just like the LED transparent screen material. During the production of images and videos,
On the one hand, it is necessary to consider the resolution of the product itself, which should be 1024 * 1024 pixels for higher resolution display. On the other hand, it is best to choose black background materials to better display the materials.
Playback Source Material Format
Image materials support jpg, png, and ipeg;
The video format supports MP4, AVI, 3GP, WMV, MOV, and FLV (recommended for MP4)
Of course, there are currently many splicing versions: multiple fan screens rotating simultaneously to form splicing images.
The display elements of the LED fan screen have only one or several columns, which are driven by a motor to rotate at a specific speed. At the same time, the control circuit synchronously controls the lighting status of the display screen, Every time the motor rotates at a certain angle, the display content of these LED display elements changes once, and there is a unique and definite display content when rotating to any position.
That is to say, the LED fan screen adopts column by column display and uses mechanical rotation to replace scanning display.
To achieve stable image display, of course, the stable rotation of the motor is indispensable, and there are also requirements for speed, so BLDC (Brushless DC) is undoubtedly the best choice.
