What is naked eye 3D?

The computer screen is flat and two-dimensional. We can appreciate the three-dimensional image as it is like a real object. This is because the difference in color shades displayed on a computer screen causes the human eye to have a visual illusion, and the two-dimensional computer will be The screen is perceived as a three-dimensional image. Based on the knowledge of color science, the protruding part of the edge of the three-dimensional object generally shows a high-brightness color, and the recessed part shows a dark color due to the blockage by the light. This understanding is widely used to draw buttons, 3d lines in web pages or other applications. In the specific implementation, 2D texts of two different colors can be drawn at different positions in exactly the same font. As long as the coordinates of the two texts are appropriate, 3D texts with different effects can be visually generated.

At present, the main naked eye 3D display technology is improved based on the following two technologies. The first is the parallax barrier technology. The parallax barrier technology was obtained by engineers of Sharp's European lab after ten years of research. Its implementation method is to use a switch LCD, polarizing film, and high-molecular liquid crystal layer, using the liquid crystal layer and the polarizing film. A series of vertical stripes with a direction of 90°. The other is a lenticular lens technology, also known as a lenticular lens or micro-pillar lens. Its biggest advantage over parallax barrier technology is its brightness will not be affected. Its principle is to add a layer of lenticular lens in front of the liquid crystal display so that the image plane of the liquid crystal screen is located on the focal plane of the lens so that the pixels of the image below each lens lens are divided into several sub-pixels. Each sub-pixel can be projected in a different direction. Then the eyes look at the display from different angles and see different sub-pixels.