1. 3D holographic projection technology shares the image displayed on the screen by grating or lens, so that the human eye can receive different images, thereby realizing three-dimensional viewing. Slot raster screens can obscure what is displayed by placing a suitable slot in front of the screen panel. After a certain distance, the light reaching the human eye can be separated, and both eyes receive two parallax images.

2. The principle is 3D graphics, 3D holographic projection is to allow users to see 3D images without 3D glasses. The technology utilizes the parallax capabilities of both eyes and does not require any auxiliary equipment (such as 3D glasses, helmets, etc.). ) to obtain a 3D image that matches space and depth. For example, the sea creatures that attract children in shopping malls use 3D holographic projection technology to present many interesting effects.

3. The naked eye of the stereo screen is still based on the principle of stereo vision, but by improving the stereo display, the image with parallax is sent to our left and right eyes, and then the specificity and propagation control of the optical path are observed through the optically occluded stereo image .