As we all know, Google is relatively early to set foot in the "smart glasses" market, but due to various reasons, it has not made smart glasses a development trend. In fact, the exploration of Google glasses has not achieved good results for many reasons. One of the more important points is that Google glasses has encountered a lot of disputes and doubts about privacy protection, such as taking private conversations with Google glasses users. In addition, the safety of Google glasses has also raised concerns. It's not safe to use Google glasses while driving, and long-term use of Google glasses may also be bad for your health: no one is willing to keep a WiFi source a few centimeters from your head for a long time.

Of course, even though Google glasses did not start the new development trend of smart glasses as expected, the exploration on smart glasses has never stopped. The emergence of VR glasses for a time was considered to be another rigid application beyond smart phones. At one time, it attracted the participation of HTC, Sony, Samsung, oculus and other well-known manufacturers, especially HTC devoted almost everything to this, but the effect was not very ideal, at least did not appear blowout market as expected. On the contrary, due to various reasons, the development of VR glasses is a little bit worse than the year before. However, it is worth noting that with the gradual use of 5g technology, the industry also agrees that VR may usher in a new development opportunity.

Recently, Yu Chengdong, CEO of Huawei's consumer business, said that VR glasses in 5g era will usher in an outbreak. Although to a certain extent, Huawei has also launched its own VR glasses, which naturally favors the development opportunities of this market. Of course, another reason is the progress of technology, and 5g application is indeed a new opportunity for VR scene application. After Huawei launched mate30 series products, a VR glasses quietly appeared. Yu Chengdong said that the delay of VR glasses in 4G era is not good because the network speed can not support it. In the 5g era, VR glasses will usher in an explosion.

What are VR glasses?

VR glasses, namely VR head display, virtual reality head mounted display equipment. Due to the lack of the concept of head display in the early stage, VR glasses, VR goggles, VR helmets and other unprofessional terms were produced according to the appearance. VR head display is the use of head mounted display equipment to close people's vision and hearing to the outside world, and guide users to have a feeling of being in a virtual environment. The display principle is that the left and right eye screens display the images of the left and right eyes respectively. After the human eye obtains the information with difference, it produces a three-dimensional sense in the mind.

What is the principle of VR glasses?

1. Staggered display

The working principle of interleaving display mode is to divide a picture into two image fields, that is, the single scanning line field formed by singular lines or the even scanning line field or even scanning line field formed by single line and even line. When using interlaced display mode for stereoscopic imaging, we can separate the left eye image and the right eye image into single field and even image field (or in reverse order), which is called stereoscopic interlacing format. If the shutter stereoscopic glasses are used in combination with the interleaving mode, the vertical synchronization signal of the image field can be regarded as the shutter switching synchronization signal. That is, when the single image field (i.e. the left eye picture) is displayed, the stereoscopic glasses will cover one eye of the user, and when the display of the even image field is changed, the other eye will be covered by the switch.

2. Picture exchange

Its working principle is to display the left and right eye images on the screen interactively. With stereo glasses and this kind of stereoscopic display mode, we only need to use the vertical synchronization signal as the shutter switching synchronization signal to achieve the purpose of stereoscopic imaging. With other stereoscopic imaging devices, the left and right eye images (separated by vertical synchronous signals) can be sent to the left and right eye display devices.

3. Disparity fusion

The reason why people can see the three-dimensional scenery is that the eyes can see things independently, and there is a distance between the left and right eyes, resulting in some subtle differences in the angle of view of the two eyes, and such a difference will make the individual scenery of the two eyes have a little displacement. The difference between the left eye and the right eye is called parallax. The human brain skillfully fuses the images of the two eyes to produce a three-dimensional visual effect with a sense of space in the brain.

Because there is only one computer screen, but people have two eyes, and it is necessary to separate the images from the left and right eyes to have stereo vision. At this point, we can use 3D glasses to make the parallax continuously displayed on the screen. Through the control IC, it sends stereo signals (left eye, right eye, left eye, right eye, successively and alternately repeats in sequence) to the screen, and simultaneously sends synchronization signals to 3D stereoscopic glasses to switch the images of left and right eyes synchronously. In other words, the left eye can see the scene that the left eye should see, and the right eye can see the scene that the right eye should see. 3D stereo glasses are a kind of penetrating liquid crystal lens, which can control the opening and closing of liquid crystal glasses through the circuit. On can control the glasses lenses to be completely black, so as to cover one eye's image; when off, it can control the glasses lens to be transparent, so that the other eye can see the image that the other eye should see. The 3D glasses can imitate the real situation, making the left and right eye pictures continuously and alternately displayed on the screen, and with the 3D stereo glasses, combined with the physiological characteristics of human vision, the real 3D images can be seen.

The rise of VR glasses comes from the embryonic form of environment and industrial chain. At present, people's demand for content continues to increase. From plane, audio to video, the next breakthrough is VR, which can promote the content to a level as panoramic content. In addition, VR will cooperate with other fields to promote the development of other industries, such as:

1. Games

Game is one of the industries that people think VR is the easiest to touch and has the most "money way". Whether it is role-playing, racing cars or action games, it is the most anticipated VR development field for the public. In the aspect of driving simulation, VR has a great application space. VR can provide almost the same experience as the real environment, and the required equipment is not complex.

2. Film / Concert

This is the scenario that has been implemented. You can see that the number of people wearing IMAX in the movie can increase the number of people wearing glasses at home. In addition, some companies have begun to make VR films, which are more immersive.

3. Socializing

Kingdom of bliss developed by storm mirror is the world's first VR social game platform, which perfectly combines VR's unique immersive experience with social interaction to create a virtual reality game world. In the kingdom of bliss, players can experience VR social networking comparable to reality, beautiful and sexy maid cultivation, large-scale VR online game "hide and seek CS", and boutique single VR shooting game "biochemical crisis". It is a vr virtual social world integrating social interaction, games, entertainment and shopping.

4. Sports competition

At the end of October 2015, the opening game of the new NBA season in the United States became the first NBA game broadcast by VR technology in the world. Fans at home wearing VR glasses, as if "fall" into the first row of the NBA game. There are also sports events broadcast with VR technology in China. On November 6, 2015, the first stop of CKF (Chinese Kongfu) international team's three times competition started at Xi'an fight sports center. It is worth noting that the competition was recorded and broadcasted in a 360 ° panoramic way. After the competition, the video of the whole match was put on the Internet, and users of the storm mirror could enjoy these wonderful events of "boxing to meat" at a close distance.  

5. News report

On the evening of October 13, 2015, five presidential candidates of the Democratic Party held the first TV debate. It is noteworthy that the TV debate of the presidential election was broadcast live on VR for the first time. "Every audience has a seat and can watch the presidential election from a new perspective," CNN said of the VR live broadcast For hundreds of years, the mode of news report is text, photo, sound and live video. VR has subverted textbooks. ABC has launched a virtual reality news report, which allows readers to be in the news scene and move freely through VR technology. The first VR news report was conducted in Damascus, the capital of Syria. ABC News users got the immersive experience of "visiting the Syrian war zone in person".

6. E-commerce

When shopping online, if you can wear it before placing an order, you may save a lot of freight. VR can solve this problem. After wearing glasses, buyers can search for the right clothes in the mass of clothes and try them on one by one.

7. Education

The combination of VR and education can definitely subvert the previous teaching mode, subverting the teachers' undifferentiated teaching for the whole class into the real individualized individualized teaching according to their aptitude. Every student can listen to the teacher's lectures for himself in the virtual environment, and can also have a dialogue with the teacher.

8. Medicine

With the help of VR, people can establish virtual human body models, learn to understand the internal organ structure of the human body with the help of tracking ball, HMD and sensory gloves, observe the effect of operation on the virtual human model, and train new doctors with VR technology.

9. Real estate

There are always many gaps between the model room and the entity room. If VR glasses are used, people can walk in the "upstairs room" and experience every detail. They can even see the greening and the distance between buildings from the window. People can even look at the thickness of the ceiling and wall, and use VR for room pre decoration.

10. Urban planning

VR technology can not only visually display the virtual urban environment, but also simulate the city under various weather conditions, so that people can clearly understand the drainage system, power supply system, road traffic, ditches and lakes, etc., and can simulate the sudden situation of natural disasters such as hurricane, fire, flood, earthquake, etc., which plays an important role in urban planning.   

11. Tourism

Since virtual reality can display 360 degree panoramic video, it has been used in the tourism industry. Virtual reality can be used to demonstrate thousands of monuments, museums and popular tourist attractions.

12 reappearance of crime scene

Virtual reality can integrate you into different places and times. This is the perfect way to recreate a crime scene, because it helps to find and analyze what was initially overlooked. Police can use advanced cameras to take pictures of the scene and produce a 360 degree panoramic video, followed by a series of events to be reproduced. With simple virtual reality glasses, investigators can look around for more clues. This technology is even more important when the crime scene is in a busy block and other places that cannot be kept intact.

13. Military training

Virtual reality can be regarded as an effective supplement to real-world training. Soldiers can be in a safe environment, but they can simulate all kinds of possible battlefield situations and enemies. Virtual reality technology has been applied in flight simulation and battlefield simulation. The more advanced mobile virtual reality platform allows soldiers to place themselves on the mobile platform, so as to better simulate the real scene

Finally, with the gradual landing of 5g, the virtual reality industry is bound to usher in a new round of outbreak. 5g large bandwidth and high speed can improve the game experience, and operators also need to find the surplus bandwidth of killer applications, and there is a strong demand to promote VR devices. In 5g era, market technology and network opportunities have come. With the blessing of 5g, VR will probably become the third screen besides smart phone + TV. Compared with mobile phone and TV, VR has the characteristics of broader vision and more realistic feeling. Under the high-speed mobile network, VR will certainly bring new opportunities to VR industry.