In recent years, glasses-free 3d led wall have become extremely popular, with hundreds of cities across the country creating their own local glasses-free 3D screen culture. At the same time, glasses-free 3D screens have garnered attention from numerous film and television companies and received applause from audiences. Although glasses-free 3D screens may appear to leap out from traditional screens, they are, in fact, “ordinary.”
In short, China’s 3d led wall technology is not a cutting-edge visualization technology, but it enables the viewing of realistic three-dimensional images without the need for 3D glasses. Our 3D naked-eye technology works by utilizing the fact that the human left eye and right eye receive images from different positions. These images are then overlaid and merged in the brain to create an image that has both a stereoscopic effect in terms of up and down as well as left and right, and a sense of depth in terms of near and far.
Common types of 3d led wall technologies are shutter and polarizer. The shutter technology divides the image into two frames corresponding to the left and right eyes and continuously alternates between them. Simultaneously, an infrared signal transmitter controls the opening and closing of the left and right lenses of the 3D glasses so that each eye sees the corresponding image at a given time. Polarized 3D technology, on the other hand, works based on the principle that light has a “vibrational direction.” It first separates the original image into two groups: vertically polarized light and horizontally polarized light. Different polarized lenses with corresponding directions are then used on the left and right sides to create 3D glasses, allowing both eyes to receive two sets of images. The brain then synthesizes these images to create a stereoscopic effect. In comparison, 3D naked-eye screen shutters are more widely used.
The current 3D naked-eye technology is not a true 3D naked-eye display; it only provides a strong stereoscopic effect when specific custom videos are viewed on a large screen from specific angles. Otherwise, the images may distort. For example, when viewers see a straight line on a flat surface from any angle, the line remains straight. However, if this line is placed on a specially shaped screen and aligned with the viewers’ eye level, it will appear tilted.
In recent years, 3d led wall consist of two different-angle images. The screen is curved 90 degrees, and video materials are used based on the principles of perspective. The left screen displays the left view of the image, while the right screen displays the main view of the image. When people stand at the front angle, they simultaneously see the side and front of objects, creating a realistic stereoscopic effect.
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