1. The earliest prototype of this technology is the air projection and interaction technology invented by an American man named Chad Dyne, which can project an interesting image of human-computer interaction.

Technical principle: the mirage principle that has been passed down since ancient times in China is consistent with this technology. In terms of water mist medium, because of the uneven vibration of water molecules, the image with hierarchical and three-dimensional sense is projected.

2. Chemical elements are widely used in the field of projection, such as the famous \"hatsune miku\" in Japan. The projection source of this technology is laser element, and the image is solid 3d image. The chemical principle used is that when N and O gases float through the air, they mix to produce a hot, pulpy substance and produce a small blast, resulting in a shorter, three-dimensional image.

3. In the holographic projection industry, we have produced 360 holographic imaging, 270 holographic imaging and 180 holographic imaging. After thousands of times of project application and operation experience, the product technology has made greater progress and the product is in a very mature stage.

Principles of three-dimensional holographic projection

Three-dimensional holographic projection, also known as phantom imaging, is a technique for reproducing three-dimensional images using optical refraction and diffraction.

The principle is to use high-lumen projectors to project carefully prepared and three-dimensional images or video evenly and symmetrically onto the imaging film of acrylic sheets. An object is imaged in the air by the diffraction and refraction of light. And we're done.