Release time：2020-06-23 21:49:33
The rapid development of science and technology has brought a lot of hidden harm to the public while improving the quality of life and providing various conveniences. The health problems caused by watching 3D enter the public and media at the same time as 3D TV. Recently, the CCTV-13 "Newsroom" column has often talked about the health problems of 3D TV, especially reporting on one of the two major 3D TV categories in the market today-shutter-type 3D picture flickering, glasses radiation and other issues, and reminding the elderly Certain groups such as children should watch 3D more carefully.
The glasses have no radiation to dispel worries, no flash 3D fire
In daily life, people may be exposed to some radiation, such as using microwave ovens, performing X-ray examinations, and making phone calls. Medical research shows that excessive electromagnetic radiation can cause harm to the human body and cause a decrease in vision and memory. Nowadays, 3D TV has begun to really enter the family. There is an important accessory of 3D TV-shutter 3D glasses. It also follows the 3D TV and enters the house, becoming a new member of the "daily radiation" family. When the first shutter-type 3D TV entered the market, consumers wearing shutter-type 3D glasses watching 3D TVs were prone to eye fatigue, dizziness, and nausea. They were frequently reported by major media, and then the shutter-type 3D glasses had potential radiation problems. It has also surfaced, increasing consumer concerns about 3D TV health issues.
So are all 3D glasses exposed to radiation and health risks? This is not the case. At present, there are two types of 3D TVs, shutter type and non-flash type, which have completely different working principles. The shutter-type 3D technology is mainly concentrated on the glasses, so the shutter-type 3D glasses need to be equipped with a battery or a charging device, and the lenses rely on the electric drive to open and close the picture like a shutter, which makes the glasses have hidden radiation risks, causing consumers Have health concerns. For another type of non-flash 3D TV, the 3D technology is mainly concentrated on the TV panel, and the 3D image is presented through the principle of polarized light, so the structure of the glasses it is very simple, no electric drive, and no electronic circuit device for receiving signals The appearance is the same as ordinary sunglasses, so there is no radiation. These non-flashing 3D glasses completely dispel consumers' concerns about health problems such as radiation and dizziness when watching 3D TV.
The reporter learned in the investigation that flashless 3D has been popular all the way since its launch, and many consumers are just looking at the advantages of flashless 3D glasses for their health and no radiation. In China, LG, Skyworth, Konka, Changhong, Hisense, Haier and other brands have launched multiple series of non-flash 3D TVs. In foreign countries, non-flash 3D is more and more optimistic. According to a report on Sina Technology on the 27th titled "US Magazine Scores LG's Best Samsung Bottom for 3D TV", the famous American consumer magazine "Consumer Reports" has reviewed 6 brands such as LG, Samsung, Sony, Toshiba and Sharp. The 13 new 3D TV products produced in the US market since the second half of last year were compared and evaluated. As a result, the LG 47LW5600 3D TV with non-flash 3D technology was ranked first with the highest total score. The market research data of AVC in June shows that the market share of non-flash 3D has increased from 5% when it entered the market at the beginning of the year, and it has climbed to 54%, which has been recognized by the majority of consumers. Full of popularity. Although this kind of 3D TV is based on the principle of polarized light, the earlier name of polarized light has gradually been forgotten and replaced by "flash-free 3D".
Healthy looking 3D away from electromagnetic radiation is the key
As we all know, the size of electromagnetic radiation is related to the distance, and it decayes rapidly as the distance increases. Take the TV we are most often in contact with as an example, the amount of radiation that can be tested very close to the TV is large, and as the distance increases, the amount of radiation decreases rapidly. Therefore, when watching TV at a normal distance, the effect of radiation from the TV screen is actually very small. But when people watch 3D TV, if they wear shutter-type 3D glasses, then these glasses will also produce radiation. Moreover, due to the close proximity of the 3D glasses to the human eye and brain, the electromagnetic radiation emitted by these glasses with almost zero distance contact can not help but worry.
For the electromagnetic radiation that we are often exposed to, people have learned some methods of prevention, such as connecting mobile phones with Bluetooth or headphones, avoiding the distance between the mobile phone signal and the body and the head; avoiding directly in front of the microwave oven; for example, pregnant women to protect The developing fetus will try to reduce the time in front of the computer and TV, as well as the X-ray examination and so on. While watching 3D TV, the best way to avoid close contact with glasses is to wear uncharged 3D glasses.
The reporter learned through the sales staff at the store, "Because of the difference in the principles of 3D imaging of the two technologies, the difference between non-flash 3D glasses and shutter 3D glasses is also very large. The imaging of shutter 3D TVs relies on bulky electronic 3D glasses, The non-flash 3D TV relies on the physical imaging principle of natural light for 3D imaging. Therefore, the non-flash 3D glasses do not need to be charged, and naturally there is no electromagnetic radiation. Consumers generally think that wearing these glasses to watch 3D is healthier and more reliable. At the same time, Because it does not use batteries or recharge, non-flashing 3D glasses are not flickering, lightweight and other characteristics have become another reason for consumers to choose it. From the recent sales of 3D TVs, most consumers regard health as the choice for 3D TVs Standard, and sales of non-flash 3D TVs are also increasing significantly."
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