Principle of Stereo Holographic Imaging Technology
Holography, also known as Holography, is an optically tempting technology.
We all have the experience that the oil film sprinkled on the road will show a variety of colors in the sun, and the same will be seen on the soap bubbles that are blowing, because the reflected light on both sides of the soap bubble appears.
In addition to interference, the phenomenon of thin film interference of light. Light is the life of photography, and light has many characteristics, such as dispersion and scattering, and experienced photographers can make full use of these phenomena to become harmful and beneficial, thereby adding some novel effects to the work.
The camera lens is composed of multiple groups of lenses. In order to avoid the loss of light reflection on the lens surface, people have invented the coating technology of the lens to make certain wavelengths of light cancel each other when reflecting, so as to increase the light entering the lens and make the imaging clearer.
Similarly, people use the interference characteristics of light waves to study a holographic technology with a three-dimensional effect.
Holography was once a patented technology used by scientists to carry out scientific research. Now ordinary people can master it after a certain amount of study. For example, a fake card that is commonly used in credit cards or book covers is a kind of three-dimensional imaging. Under the sun It shows colorful reflections.
The word "hologram" we will feel very familiar with the hologram of the human body in the ear pin.
The human ear is a miniature of the human body, which corresponds to the various organs of the human body. From here, people have further studied that any part of the human body has the information of the entire body.
The principle of holography was proposed by British physicist Dennis Gabor in 1947, and the scientist himself won the Nobel Prize. When shooting a holographic image, record the light wave itself and the relative phase of the two beams. The phase is caused by the difference in position between the actual object (blue light in the figure) and the reference light (red light in the figure). We can't see the image of the object on the interference fringe. We must use a cohesive laser to accurately target the target and illuminate the hologram, so as to reproduce all the information of the object light. A person named Bandon later discovered a simpler method of using white light to restore images, which gradually moved the technology to a practical stage. When the US National Geographic magazine used white light holograms on the cover for the first time, sales increased from 10 million copies to 16 million copies after reprinting. This technology was later spread by the United States to Europe and other countries, and is widely used in counterfeit technologies such as credit cards. Laser holography technology has also become popular all over the world.
Holography is a kind of photography that uses the interference of laser light waves to record images and reproduced images. It is completely different from ordinary stereoscopic photo technology. We can watch all sides around it, but we can't touch real objects, which is remarkable The characteristics and advantages are as follows:
1. The reconstructed three-dimensional image is conducive to the preservation of precious art materials for collection.
Discover DHN 3D HD Laser Projector