The combined hologram is a hologram recorded by tens or even hundreds of different two-dimensional images through tens or even hundreds of exposures. This is a hologram with extremely high anti-counterfeiting performance, with the following characteristics:
1. The amount of information is huge and the production process is complicated: ordinary holographic anti-counterfeiting labels can often be completed by several exposures, while the production of four-dimensional holograms needs to record dozens or even hundreds of frames of two-dimensional images, so the number of exposures is common Dozens or even hundreds of times, this requires special equipment and more sophisticated process to achieve.
2. There is no limitation on the shooting image, which expands the application range of the high-tech method of laser holography: ordinary holographic recording 3D models require 1:1 model entities to shoot, while 4D holography first collects object information from various angles, and then The collected two-dimensional images are synthesized to produce a hologram, so that there is no restriction on the object of shooting, which can be a real person, a real object, or even an imaginary object constructed by a computer. The ratio does not need to be 1:1.
3. True color four-dimensional display, ordinary holographic logos are beyond the reach: traditional holographic logos can only achieve a sense of plane layering, and three-dimensional holograms can only show the three-dimensional features of 1:1 still life, and cannot restore the true color of the object. Four-dimensional holography is different. While reflecting the three-dimensional space objects in true colors, it can also attach the changes in the three-dimensional space over time. Such a holographic logo is like a small TV with rich content, and the designer can sway it on it.