When you first saw the concept of laser TV, I believe many readers are very curious. What are the advantages of laser TV compared with the most common LED TVs and the most classic CRT TVs? What is laser TV?
What is laser TV?
Laser TV, as its name suggests, is a television device that uses a laser as a light source, which is different from a traditional TV using a light source. When the bulb is used for a long time, there will be a problem of brightness decay, which directly affects the final display effect. The projectors that are common to laser TVs and the like are very similar. Unlike projector products, laser TVs use lasers as the light source and no longer need to use the bulb as the light source.
The laser TV consists of two parts: the laser TV main unit and the screen body. The relationship between the two is to make up for the separable and indispensable. However, at present, it is not a separate name for habit, and it is generally called laser TV.
You can look at the picture below to understand how laser TV works.
Schematic diagram of laser TV working principle
The first is to use a very high power laser source to concentrate more than 100W of light energy per square meter. Intuitively, 100W of light energy is enough to instantly melt glass and steel. Therefore, high energy density is the key to achieving high brightness of the laser TV light source, otherwise it will not be able to display a picture with sufficient brightness.
The high-speed rotating fluorescent pink wheel is also a must for laser TV. On the color wheel, the segments are coated with phosphors of different colors. When the color wheel rotates at a high speed, the emission of different primary colors can be realized, and we can see the colorful picture. As we mentioned earlier, due to the presence of high-power laser sources, it is enough to melt the steel in an instant. Therefore, the high-speed rotating color wheel also bears another very important function, which is to let the temperature of the phosphor be rapidly reduced, so as to avoid being destroyed by the high-power laser and achieving the purpose of normal illumination.
In addition, the screen used by laser TVs looks like LCD TVs, but it is quite different. The laser TV screens use a cold screen, which is a screen that does not require a power supply. In addition to the glass substrate, a multi-layer film is added to reduce the diffuse reflection of light and make the picture appear clearer.
Advantages of laser TV and LED LCD TV, CRT TVFirst of all, as a TV, laser TV has a great advantage in size, and can easily reach the level of 100 inches. This, LED TV and CRT TV will be defeated.
Secondly, laser TV is also leading in terms of color performance and product life.
The following is a picture showing the contrast between laser TV and LED LCD TV and CRT TV. What are the advantages of laser TV?
Laser TV, LED LCD TV and CRT TV
In terms of color performance, laser TVs have higher color saturation. The CRT TV that everyone is familiar with is rich in color layering. In the era of LED TV, the color performance has declined. This is also an indisputable fact. The imaging principle of laser TV determines the high consistency of color performance, even if it is used for a long time, there will be no color decay. Unlike CRT TVs, which take too long to be used, color fades.
CRT TV radiation is very big
In terms of health effects, the laser itself does not have the phenomenon of electromagnetic radiation. Compared with the large-radiation CRT TV and the extremely small LED LCD TV, it has a great advantage. In fact, in terms of the security of laser TV, some users are still worried. In actual use, as long as the laser source is not directly viewed by the naked eye, it will not cause harm to the human body.
In a brand 100-inch laser TV parameter table, the power of the whole machine is only 260W.
In addition, in terms of energy consumption, laser TV also has certain advantages. Taking LED LCD TVs as an example, the power of a certain brand of 84-inch TV has reached more than 1000 watts, which means that it consumes one kilowatt hour per hour. In the case of a 100-inch laser TV, the power is usually between 200 watts and 300 watts, which is a low-power product compared to LCD TVs. In addition, unlike the projector, laser TVs generally use laser UST technology, ultra-short throw distance, no need to use a large space like a projector to work properly.
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