The development and Application of holography - Dr. Zhao Jitao
Abstract: The rapid development of science and technology, the emergence of new technologies, resulting in the continuous development and change of the social environment. New technology is constantly integrated into all aspects of society appropriately and organically, enriching people's lives. This paper analyzes the application status of holographic technology in public places, communication, medicine, advanced equipment and other fields, and prospects the future application trend of holographic technology.
Key words: development of science and technology holography technology application
1 the introduction
Hologram means complete information. Now people say that holography is divided into two systems: one is the optical sense, one is the projection of the field of presentation, but in practical application, people did not subdivide it. Among them, holography in the optical sense is to use the interference principle of light to record all the information of the object in the form of interference fringes emitted by the specific light wave of the whole object, and form a three-dimensional image very similar to the object itself under certain conditions. Holographic technology in this sense has three characteristics: (1) three-dimensional, that is, the image reproduced by holography is three-dimensional, it presents the effect like watching the real object as full of three-dimensional sense; (2) severability, even if the hologram is broken, it does not affect the image of the whole object, and will not lose the integrity of the image because of the broken photo; (3) The information capacity is large, and its theoretical storage upper limit is much larger than that of disk and CD. Holography in the field of projection presentation makes use of optical transmission characteristics to present digital images in the "air", so as to realize the "virtual and real fusion" with real objects in the visual space .
Holographic technology thought is put forward, constantly fusion in the field of other disciplines, has formed a variety of emerging technologies, such as holographic storage, moulded micro-holographic, holographic measurement, such as technology, is producing a wide variety of holographic, such as transmission hologram, like a hologram, rainbow hologram, white light to reproduce hologram, true color hologram, dynamic holographic, CGH, digital hologram, etc., Holographic technology is also more and more mature. Among them, holographic stereoscopic display has broken through the level of laboratory research and has entered the social application .
Holography is a method of recording light patterns that are reproduced in three-dimensional images called holograms. Hungarian physicist Denis Gabor invented holograms in 1947, but now more advanced holographic technology is starting to support individual users, businesses and governments. At present, holographic technology develops in two directions: the visual quality of holographic display and multi-dimensional holographic experience. Holographic display equipment can project large size and high resolution images to different planes at different focal distances through holographic technology to achieve visual stereoscopic effect. With the continuous improvement of hardware capability and the reduction of cost, holographic display is developing towards the goal of larger scale, lower cost and higher fidelity .
3 Application Status
3.1 Application of holographic technology in public places
Holograms are being used in fashion, entertainment, museums and politics. The combination of hologram moulding and fashion has become a darling of designers in the fashion world, with Alexander showing a hologram of Kate Middleton at an autumn/winter 2006 show. In the entertainment industry, the application with the most extensive influence in China is Shu Embroidery performed by Li Yuchun in the 2015 Spring Festival Gala. Through special effects, several Li Yuchun appeared on the show, performing lifelike together in front of the audience. Before this, the sensation Teresa Teng and Jay Chou duet in space, also used holographic technology. The realization of these pictures is to make use of holographic projection technology to produce three-dimensional air illusion, so that the illusion and the performer interact, complete the performance together, and produce shocking performance effect. At present, holographic museums have appeared in some cities such as the United States and the United Kingdom, which take holographic photos of some rare treasures to reduce security risks such as damage and theft. There are also foreign designers to install holographic technology on the back of the seat, which can provide passengers with information such as ordering food, communication and three-dimensional images of the environment. Even in political circles, holographic "cool wind" has been started. For example, Indian Prime Minister Narendra Modi used holographic technology to make himself appear in different places to solicit votes during his election campaign in May 2014.
Holographic connectivity, AR/VR (virtual and Augmented reality) is considered to be one of the most important requirements of 5G, especially one of the typical applications of HIGH throughput requirements of 5G. 5G will be able to support the transformation of current wired or fixed wireless AR/VR into wireless mobile AR/VR for a wider range of scenarios. Once AR/VR can be used in a more simple and convenient way, it will promote the rapid development of AR/VR business and stimulate the rapid development and maturity of AR/VR technology and equipment itself. It can be expected that 10 years from now (2030 ~), the media interaction form will be based on the current planar multimedia, developed into high-fidelity AR/VR interaction, and even holographic information interaction, and wireless holographic communication will become a reality. High-fidelity AR/VR will be ubiquitous, holographic communication and display can also be carried out anytime and anywhere, so that people can enjoy a fully immersive holographic interactive experience at any time and place, namely to realize the communication vision of so-called "holographic connection" .
3.3 Holographic Device
In 2014, Shenzhen ESTa Group Tike Technology released the world's first holographic mobile phone - Takee, using the mobile phone can see the holographic image, it has a professional special camera to accurately track the eye and can be modeled so that we can see the holographic image, at the same time as the eye position will automatically adapt. Users can not be limited by the Angle of view, can watch realistic, high-definition 3D movies with naked eyes. Some people imagine that the holographic mobile phone in the future can track the user's eyeball and display the image that the eyeball sees in real time, realizing the same view and feeling as our naked eye. It can be imagined that with the continuous development of mobile phone industry technology and holographic technology, holographic applications will be popularized on mobile phones, so that all kinds of mobile phone applications such as games, intuitive shopping, movies, navigation and maps will carry holographic technology and have considerable prospects in the mobile phone market. Such as 3D printing a three-dimensional person, the person does not have to come to the scene, only need to collect the holographic image of the person through the holographic image technology, and transmitted to the printer can be realized.
3.4 Application of holography in medicine
The application research of holographic technology in medical treatment is earlier. For example, the Human Media Lab of Queen's University in Canada successfully developed 3D holographic projection equipment in 2012, which can assist telemedicine. Some foreign technology companies even developed 3D holographic visual heart in order to facilitate surgeons to practice operation, which is a great breakthrough in medicine.
The application of holographic technology is still in the primary stage, many technologies need to be improved and breakthrough. In addition, the application of holographic technology in many fields is not mature, so the application of holographic technology is limited. This paper believes that with the continuous progress of science and technology, holographic technology will appear in every corner of life, and will become the key to open the virtual and reality blend world, become the trend of future development, is worth everyone's expectation.
At present, many scholars in Our country continue to discuss the holographic technology, the country continues to increase the investment in scientific research, various advanced technologies have also received more attention, and are constantly applied to the society. In this era, holographic technology will soon enter the social field, better support China's scientific and technological innovation. In a word, holographic technology will become a sharp tool in the age of wisdom, which is worth our attention and research.
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