When we recall that Tony Stark in "Iron Man" in his tech-filled studio, with the ease of manipulating the virtual image suspended in the air, surely every viewer must be deeply shocked by the extremely futuristic image. Images that flash in the air and can be manipulated with random gestures, like a doorway to the future of technology, leave an indelible imprint on our minds.

In the real world, aerial imaging technology, which once existed only in science fiction movies, is gradually moving from dream to reality. This technology is no longer an illusory fantasy, but has taken a solid and powerful development pace and emerged in various fields.

一、Principles of aerial imaging technology

The core of aerial imaging technology lies in the ability to generate and detect virtual images, and the following are several common types of technology:

l Light field reconstruction principle: Through the flat lens and light field reconstruction principle, the use of discrete tiny unit optical elements, so that the air into a "screen", the divergent light in the air to reconverge, forming a three-dimensional real image.

Negative refraction plate lens: composed of thousands of layers of glass, the application of light field reconstruction principle, the use of discrete tiny unit optical elements, so that the air into a "screen".

l Equivalent negative refractive index flat lens: from a microscopic point of view, the lens is composed of a dense lattice and grating, through the arrangement of the light to produce a "negative refraction" phenomenon, the light emitted by the light source can be reunited, on the other side of the formation of a visible 1:1 size of the real image. The application of recombination sensing device realizes the direct interaction between human and real image.

A large number of mirrors glued: Japanese company Aska3D uses a large number of mirrors glued together to form an AI board to achieve imaging effects.

Light integration: The use of a large number of refraction and reflection units, the light emitted from a point in space in another location to re-converge imaging.

l Calculation of light field: The use of micro-structure light field reconstruction technology, the object is discrete into a high-resolution spatial light spot lattice, through the light diffraction propagation, interference superposition and complex amplitude control of the light field, the discrete light spot lattice is lossless reconstruction in the air, without any medium scattering, you can observe high-fidelity images, so as to achieve media-free imaging.

l Binocular parallax principle: Using the similar but not the same characteristics of the picture observed by the left and right eyes, by generating two slightly different images, to achieve the effect of aerial imaging.

l Unilateral infrared sensor: combined with unilateral infrared sensor, to achieve direct interaction between people and aerial images.

二、Realistic application of aerial imaging

1. Medical field: For example, during surgery, doctors can view patients' medical records and image data through aerial imaging without touching the physical screen, so as to avoid cross-infection caused by touching the button, which significantly improves the working efficiency and prevention and control level of the operating room.

In addition, the contactless medical self-service machine generates a virtual interface, and patients can register and pay fees by touching the air, reducing the risk of cross infection.

2. Intelligent cockpit field: In the intelligent cockpit of the car, aerial imaging technology can replace the traditional center console display mode, and project navigation information and entertainment content directly to the front of the driver, which not only enhances the sense of science and technology and the sense of the future, but also reduces the driver's eye shift and effectively improves driving safety.

1. Commercial display field: shopping malls, exhibition halls, museums and other places can use aerial imaging technology to display goods, artworks or historical relics, etc., to bring more shocking and immersive experience to the audience.

2. Education field: Teachers can display teaching content in the air, such as three-dimensional geometric figures and vivid biological structures.

3. Entertainment: In games and movies, players can interact with game characters by touching them in the air; In terms of film production, holographic movies are expected to be realized in the future, bringing a new way for audiences to watch movies.

4. Smart Home: Generate a virtual control panel that users can operate in the air to control smart devices in the home.

三、Current situation and future of aerial imaging technology

International market situation

In the international market, the development of aerial imaging technology is mainly concentrated in countries and regions with leading technology. Apple and Google in the United States have invested heavily in AR and VR, with Apple filing a number of patents in aerial imaging technology and integrating the ARKit platform in the latest iPhone and iPad. Google provides strong technical support to developers through its Tango project and ARCore platform, and has also invested in a number of startups focused on aerial imaging technology. Microsoft's HoloLens is the world's leading AR headset, and its research in aerial imaging technology is also very deep, and has been applied in many fields such as healthcare, education and industry. Japan's SONY and Panasonic have rich experience in optical and display technology, SONY's holographic display technology has been used in some high-end products, and Panasonic's research in aerial imaging technology is also quite competitive. Carl Zeiss in Europe is prominent in the manufacture of optical instruments and has made important contributions to the development of aerial imaging technology.

Domestic market situation

In China, the government attaches great importance to scientific and technological innovation, and has introduced a number of policy measures to support the development of aerial imaging technology. Huawei has made significant progress in aerial imaging technology, and its mediumless aerial imaging technology has been applied to a number of fields, and has cooperated with a number of universities and scientific research institutions to jointly promote technology research and development. Yidao Information has independent intellectual property rights in the field of aerial imaging technology, and its products have been widely used in commercial display, game entertainment and film production. Dongchao Technology is a leading provider of aerial imaging technology in China, whose products are widely used in many fields such as home, exhibition, in-vehicle medical, announcement facilities, etc., and has led the development of aerial imaging standards. Kaisen Technology provides coated glass raw materials for enterprises related to aerial imaging display, and its products are widely used in negative refraction flat lenses and aerial imaging interactive experience boxes. Danghong holds a 9.8% stake in Near Holography, a global leader in outdoor air projection patents. Silk Road Vision provides CG visual scene comprehensive services, combined with holographic imaging, phantom imaging, air imaging and other technologies, widely used in interactive touch, motion sensing technology, virtual/augmented/mixed reality and other fields.

In the future, aerial imaging technology will continue to develop in the following aspects:

l Technological innovation

o Higher resolution: Improve image clarity and color performance through improved optical systems and projection technology.

o Lower latency: Optimize infrared sensing technology and image processing algorithms to improve real-time interaction.

l Application scenario expansion

Industrial manufacturing: Generating virtual operating interfaces to improve productivity and safety.

o Virtual reality: Combined with VR/AR technology to provide a more immersive interactive experience.

l Market popularization

Reduce costs: Reduce the cost of aerial imaging technology through technological innovation and mass production.

o User education: Strengthen user education and marketing to increase user awareness and acceptance of aerial imaging technology.

四、Shanghai Leiditech helps the aerial imaging industry prosper

Shanghai Leiditech provides typical protection cases for the peripheral connection interfaces of aerial imaging equipment such as USB, RS232, CAN, network port, sensor, I2C and other interfaces, and the comprehensive list is as follows, which can be directly applied to practical scenarios.

If you need more interface protection solutions, please pay attention to Shanghai Leiditech public number or contact EMC Brother. Shanghai Leimou professional development and sales ESD, TVS, TSS, GDT, MOV, MOSFET, Zener, inductor and other products. Leiditech is committed to providing customers with high quality products to protect circuits from electrostatic interference and voltage fluctuations. Lei MAO has an experienced R & D team, can provide personalized customized services according to customer needs, to provide customers with the best quality solutions.

With its profound accumulation and technical advantages in the field of electromagnetic compatibility, Shanghai Leiditech can provide electromagnetic compatibility support for the aerial imaging industry, help the industry technology to continue to break through, so that this once science fiction element truly integrates into our real life, opening a new era.