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2020The year-on-year growth rate of the laser TV market once decreased from50%Reduced to,Some people say that this is due to the overall environment,2020The retail volume of China's color TV market has also declined,The positive growth of laser TV has been very rare。
Is that really the case? Another set of data may be a face-slap laser TV,The same is a large-screen product,2020Year65Inch and70Inch and above smart TV shipments in China's color TV market increased year-on-year respectively and。 As for the sales of smart TVs, Xiaomi alone ships more than 10 million units a year.
In 2020, the total global sales of laser TVs will only be about 200,000 units, and the sales gap is clear at a glance.
In fact, laser TV has been promoted for quite a long time,Pre-sales education for consumers should be sufficient,Why has sales been sluggish,Can't compete with large-screen LCD TVs。
I think it's some flaws in the laser TV itself that have caused its sales to slow down and increase rapidly。
For example, the health eye protection function of laser TV is relatively chicken,Scientific experiments have proved that blue light is the biggest "killer" that damages eye vision! What we often say about "eye protection and blue light" is to prevent blue light, which is very harmful to vision. But the laser TV reflects the image of blue light, how to talk about "softer reflected light", "more eye protection"?
In addition,Laser TV claims to have a clear display effect during the day,This is a bit ridiculous。 The extremely low brightness and contrast of laser TV are destined to not be very good during the day. Let's not talk about low-end laser TVs,Even if it is a mid-to-high-end laser TV with a price of more than twenty or thirty thousand,The brightness can only reach about 350 nits,It can only reach the brightness of the most ordinary LCD TV,The brightness of normal mid-to-high-end LCD TVs is generally in600 to 1000 nits,High-end TVs even exceed a thousand nits。
The contrast ratio of laser TV is also very low, only about 1500:1, and the contrast ratio of mini LED screen TV is as high as 1000000:1, which is definitely incomparable to laser TV.
Therefore,The low sales of laser TV must have its flaws,It's not that consumers don't buy it,It's that the use effect is really unsatisfactory。
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In the past, the country's armed forces used laser technology. In general, it uses a laser thermal sensor. In terms of defense science and technology, it is not allowed to be used for civilian use.
By 2014, the state can be used for enterprises. Laser not only will not hurt people's eyes, but also will in turn protect people's eyes, the luminous principle of laser TV and LCD TV is not the same, the laser is a 30-degree viewing angle, it belongs to diffuse reflection, it is the most comfortable light received by human eyes, also known as natural light, the screen has no electricity, no radiation is guaranteed, no blue light, no glare, this laser is different from the laser in the hospital, the laser belongs to the super laser wave, this laser is not the same as that kind of laser, Laser waves and ultraviolet radiation in the hospital are radiation,Mainly harmful to the body,Judging from the current laser TV,There are Changhong、Hisense、Jimmy、Nuts、Xiaomi,A little better Changhong laser is also good,Good design style,First sales at home and abroad,But there is still Hisense laser,But it is too rubbish,Quality is indeed a problem,After my comparison in the exhibition and business,Changhong is better than Hisense laser,Because Changhong is better than Hisense regardless of appearance and functional configuration,Color gamut Changhong130%Hisense116%,System, Changhong Robot,Hisense Robot,At present, Changhong TV project team is also using,Changhong***,It is recommended to buy Changhong as the first choice for laser,No matter how good Changhong is,Mainly professional。
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The sales of laser TV are not only the problem of hurting the eyes,There is also a problem in his hardware,Now many functions cannot be operated,It is not as good as the new TV with the function of a mobile phone。
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Since the advent of laser TV, it has been frequently mentioned in its advertisements"Extremely high audio and picture effect experience, with the same thing"Eye protection"function, no matter how long you look at it, it won't hurt your eyes", many parents are willing to pay for it. However, laser TV is really as advertised, and it can be scientific"Eye protection"Is it?
According to the analysis of medical experts,Laser TV is emitting blue laser imaging,And the short-wave blue light of the laser light source is the killer of the human eye,Even if you don't look directly at the laser beam,Long-term**laser TV may still cause damage to the human eye。 "Although the screen of laser TV is refracted by diffuse reflection to refract the light source,But there will still be some light that will directly enter the human eye,The laser band itself is narrow,After looking at it for a long time, the eyes will have symptoms such as fatigue and dryness。
With the increase in the number of users who buy laser TV,The real feelings of users after using it,It has also spread rapidly on various platforms on the network in the form of complaints。 And now,Laser TV hurts the eyes and adds new evidence,Push the originally controversial laser TV to the forefront again。
According to the test results of the unified glare value of laser TV by professional testing institutions(ugr),The ugr value of laser TV in the dark field environment can be reached at the highest,Far exceedingugr=19The highest value of the industry's recognized comfort zone,Even broke throughugr=28This"Intolerable"Value.
Laser TV simulates UGR test results in a nighttime environment).
Based on this, the professional evaluation agency has come to the conclusion that exceeding the tolerable limit of the human eye will cause extreme discomfort to the human eye.
This country** is not recommended for you to read it a second time, the content is too refreshing, I'm afraid you will lose control of your emotions!
What is UGR? Full name in Chinese"Uniform glare values", is promulgated by the International Commission on Illumination (CIE) and is used to measure the psychological parameters of the subjective response to the discomfort of the human eye caused by the light emitted by lighting installations in an indoor visual environment. Due to the unsuitable brightness distribution in the field of vision, or the extreme brightness contrast, there will be a sense of light that the human eye cannot adapt to, which may cause disgust, discomfort or even loss of vision.
This is one of the important causes of visual fatigue.
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Experimental results: After the subject** LCD TV, there will be obvious changes in visual acuity, refraction and ciliary muscle, as well as symptoms such as eye swelling, eye pain, photophobia, dry eyes, and blurred vision; After the subject** laser TV, there was no obvious change in key indicators such as visual acuity and subjective perception of the eye. The study also found that due to the excessive contraction of the ciliary muscle for a long time, it is easy to cause myopia, and the ciliary muscle fatigue is obvious after the **LCD TV, and the ciliary muscle tends to be more flexible after the **laser TV, which shows that under the same conditions**laser TV is not only more comfortable, but also can protect the eyes to a certain extent.
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Laser TV in the daytime or in the case of light**,The picture is white,It's very difficult to see the picture clearly,It's easy to get tired after watching for a long time。
The laser TV bulb is extremely high, and once it accidentally hits the eyeball, the consequences are very serious, especially for teenagers and children who are still growing and developing.
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I think laser TV should hurt the eyes,What is the principle of laser TV?,It is through laser or mixed LED light source,Projection。
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In order to display the effect, the condenser screen is used, that is, the projected light is reflected into a parallel light to the user's eyes, and the surrounding ambient light is reflected to other places, which does not protect the eyes but tends to hurt the eyes.
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Someone has played with laser pointers,Laser TV is similar to that kind of light source,Laser pointer is going blind when it hits the eyes,Not to mention the laser TV that is much brighter than the laser pointer,It's a "big killer"。
In addition to the damage caused by looking directly at the beam, the blue light of laser TV also causes a lot of damage to the eyes. The projection light source of laser TV is the blue laser, which is hit on the digital micromirror through the color wheel to image. It is conceivable,How high its blue light value will be,After experiments, the blue light peak of laser TV will be much higher than that of traditional LCD TV,The peak of the blue light spectrum is extremely sharp。
Everyone knows the damage of blue light, blue light is particularly penetrating, and can cause macular degeneration, cataracts, and even permanent blindness to children's eyes!
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Without over-reading, I think this thing can be understood logically.
As a veteran myopia victim, I have a deep memory of the process of myopia and deepening. From the beginning, seeing too close caused the optic nerve to be forced and myopia, just 100 degrees when it was actually not strong and did not pay attention, but slowly found that I squinted because I couldn't see clearly, because the vision was not clear enough and further compressed the optic nerve, every time I watched TV, my eyes felt very tired, which led to the deepening of myopia into a foregone conclusion. So it's easy to understand,Laser TV is indeed reflected light and not direct,But it can't cover up the shortcomings of poor picture quality caused by unclear imaging and insufficient color,It's easy to be myopic when you look at this kind of picture for a long time。
And LCD TVs are diluted by ambient light even if they are direct,What's more, many LCD TVs now have the function of ambient light sensing, which can automatically adjust the brightness,In comparison, the brightness is scientific and can be seen clearly。
I don't know how much money laser TV makes by playing the slogan of eye protection, but there must be a day when it pays the price.
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The first is the source. The energy of the laser is too high, you can imagine the laser played with by a child when you were a child, so small that accidentally shining on your eyes will make people temporarily unable to see things. In the same way,The light of the laser TV will also cause damage if it accidentally hits the eyes,You can go to the physical store to experience it,Warning signs will appear when you are close to the laser TV,This shows that the light source of the laser TV is not safe。
Moreover, the brightness and color of laser TV are much worse than that of LCD TV, and the viewing angle is smaller. Imagine sitting on the TV and seeing a gray ground that means you have to put more effort into recognizing the image, and you will be tired and more eye-catching after watching it for hours. Children who watch this kind of picture for a long time are also prone to the problem of color weakness.
There is also the low brightness of laser TV,This means that you have to watch TV in a dark environment to have a good effect,It is more eye-consuming to see a brighter screen in a dark environment,So people will recommend watching TV with the lights on。
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Laser TV does not directly shoot light into the human eye, but emits the laser to the screen medium, and then diffuses the reflection image, and finally transmits the soft picture light into the human eye.
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Why does laser TV hurt my eyes? Laser TV is originally projected to the screen through strong light,And then reflected to the human eye through the screen,Only when it reaches a certain intensity can you see clearly。 If the human eye looks at the optical machine, the damage to the human eye caused by the strong light is even more irreversible.
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Why does laser TV hurt your eyes,This question asks you,Why did your mother ask you to turn on the light when you did your homework,It must hurt your eyes to see things in a dark room,It's hard to see clearly,Eyes always want to see more clearly,So it's more tired,Isn't it hurting your eyes to watch uncomfortable。 Watching laser TV is not the same, it makes sense,I can't see it at all during the day.,That's how much it hurts your eyes.。
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I bought a laser TV before,It obviously doesn't feel practical,Color saturation is not enough,It looks like it feels more tired to the eyes,Laser TV is not recommended。 And once the distance is close,It will automatically shut down,It's said to protect your eyes,Isn't that a side proof that laser TV really hurts your eyes。
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The principle of laser TV is similar to projection,In order to achieve brightness, the laser power is too large,Not only is the heat serious,The eyes will be uncomfortable after watching it for a long time。
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Users of laser TV, starting from the principle of experience imaging, through the blur of whitening, low viewing angle, and excessive blue light, share and analyze the reasons for the experience of laser TV being tired and hurting the eyes, and lead to the quality of the LCD TV with eye protection.
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Lasers are inherently bad for the eyes, not to mention that watching movies takes a long time and is very harmful to the eyes.
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As the name suggests, the word laser is highly lethal, and if you look directly at it carefully, it is very likely to cause irreparable damage to the eyes, especially for ignorant children. Although the use of Frenier screen, brightness, contrast, and clarity still cannot be compared with LCD, and relatively good results can be seen in a dark environment, and it is also hurtful to the eyes in such an environment for a long time.
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Why does laser TV hurt my eyes? Laser TV,As the name suggests, it is a TV that uses the principle of laser to display imaging,First of all,Laser is a high-energy ray,Irradiation to the eyeball will cause permanent damage,Although the defect is now made up for by technical improvement,But it is inevitable that there may still be an accident that directly hits the eye; Secondly,Laser TV is reflection imaging,Because it is not self-luminous,The color of the whole imaging is biased,The whole is dim,Such a picture,It is very difficult for the human eye to see,And it is more difficult to see clearly in a dim environment,Everyone knows,The damage to the eyes in a dim environment is particularly great。 Therefore, the above two points are the biggest reasons why laser eyes are damaged.
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Laser, the word feels like it can't be used on TV.
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1. The damage of strong light to the eye nerve, the laser is a high-density light energy, and it is a single wavelength, that is, monochromatic light, the weak laser is directly directed to the naked eye, it will feel very dazzling, a slightly high-power laser will make the eye temporarily blind, and the high-power light intensity can directly damage the human eye nerve, resulting in blindness. This is also for visible light.
2.When the light energy reaches a certain level, it will produce high temperature on the object and directly cause burns to the eyes, and the power of the laser reaches a certain level, which can instantly vaporize the steel plate, and the eyes are no longer a problem, this should also be.
3.Some specific lasers have a particularly strong absorption effect on specific materials, such as the near-infrared laser in the 1064nm band.
There is a special item in the encyclopedia.,I won't copy and paste.,Take a look.。
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