The principle of naked-eye 3D technology

Computer screens are flat and two-dimensional. We are able to appreciate realistic three-dimensional images because the differences in color and grayscale displayed on the computer screen create an optical illusion in the human eye, making us perceive the two-dimensional computer screen as a three-dimensional image. In other words, Naked-eye 3D Based on knowledge of color science, the protruding parts of a three-dimensional object in naked-eye 3D generally appear in high-brightness colors, while the recessed parts appear darker due to light obstruction. This knowledge is widely used in drawing buttons and 3D lines in web pages or other applications. For example, 3D text to be drawn displays high-brightness color in its original position, and is outlined with low-brightness color in the lower left or upper right corner, creating a naked-eye 3D text effect visually. In the specific implementation, two 2D characters of different colors can be drawn in different positions using exactly the same font. As long as the coordinates of the two characters are appropriate, different 3D character effects can be visually produced.

Currently, mainstream 3D stereoscopic display technologies still cannot escape the constraints of special glasses, greatly reducing their application range and comfort. Moreover, many 3D technologies can cause nausea and dizziness for those who experience them for extended periods.

Naked-eye 3D Light-blocking technology

Light-blocking naked-eye 3D technology uses a switching liquid crystal display, polarizing film, and a polymer liquid crystal layer to create a series of vertical stripes at 90° angles using the liquid crystal layer and polarizing film. These stripes are tens of micrometers wide, and the light passing through them forms a vertical, thin, striped grid pattern, known as a "parallax barrier." This technology utilizes a parallax barrier placed between the backlight module and the LCD panel. By separating the visual images for the left and right eyes, the observer can see a 3D image.

Naked-eye 3D The advantage of this technology is its cost-effectiveness, as seen in Sharp's 3D phones and Nintendo's 3DS game console. However, screens using this technology have lower brightness.

Naked-eye 3D Cylindrical lens technology

Naked-eye 3D cylindrical lens technology, also known as micro-cylindrical lens naked-eye 3D technology, positions the image plane of the LCD on the focal plane of the lens, dividing the pixels of the image under each cylindrical lens into several sub-pixels, allowing the lens to project each sub-pixel in different directions. Therefore, different sub-pixels can be seen from different angles of the display.

Cylindrical lens technology does not affect screen brightness like light-blocking technology, so the display effect is better.