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The first appeared in the LCD display technology. Multiple viewpoints are formed through grating or slits to ensure that the viewers will have a visual difference between the left and right eyes when viewing from any external device, thereby forming a naked-eye 3D display effect. The current popular naked-eye 3D display screen is accurately described as a “display with naked-eye 3D effect”, and its essence is the naked eye 3D led display screen effect formed by 2D LED display and specially produced 2D video content.
The naked eye 3D led display screen is to add some optical structures to the display screen, so that the displayed images enter the left and right eyes of the person to produce parallax, and the 3D picture can be seen without wearing any special glasses or other devices. There are two types of naked-eye 3D display technologies: one is Parallax Barrier, which uses light-transmitting and opaque (black) linear stripes distributed at intervals to limit the direction of light travel, thereby allowing image information to produce parallax effects; and the other is The Lenticular Lens uses the focusing and light refraction technology of the lenticular lens to change the direction of light travel to split the light, thereby producing parallax effect on the image information. The common disadvantage of the two technologies is that the resolution is halved, so the LED lights need to be doubled, and the parallax barrier technology will reduce the brightness of the stereoscopic display screen; therefore, the outdoor naked-eye 3D display medium is most suitable for using LED small-pitch displays.
There are two types of 3D modes: passive 3D display and active 3D display. For viewers of the traditional naked-eye 3D displays, the video content seen by the left and right eyes has a certain visual difference, forming a 3D effect. At present, many naked-eye 3D display cases that are popular are installed through the display screen and combined with the production of creative content to form an immersive experience. Experience, not naked-eye 3D display in the traditional sense. The display screen folds the screen 90°, using video material that conforms to the principle of perspective, the left screen shows the left view of the image, and the right screen shows the main view of the image. When people stand in front of the corner and watch, they can see the object at the same time. Side and front for a realistic three-dimensional effect.
The current naked-eye 3D display effect needs to be evaluated from the display effect of the display screen product, the installation scene, and the combination of creative content. “Booming red” shows that the viewing effect of the display device requires a perfect combination of hardware and content.
The quality of naked eye 3D can be judged from the two dimensions of viewing distance and content. In different installation environments, the dot pitch of the display screen determines the viewing angle and viewing distance of the audience. The higher the clarity of the content, the more video content can be displayed; The “tailor-made” naked-eye parallax video can give the audience an immersive sense of interaction.
