When home users gradually tend to use large-screen TVs, since 2013, the new term laser TV has gradually emerged and attracted the attention of many users. So, what is laser TV? What is the working principle of laser TV? So far, which laser TV brands deserve our attention. The following article will give you a detailed description.
What is laser TV?Laser TV is not a new concept. The technology prototype took shape in the 1990s. Laser TV prototypes were launched in 2003, and consumer electronics giants such as Mitsubishi and Sony also launched laser TV prototypes in 2006 ~ 2007. In the early development of laser TV, foreign consumer electronics giants played the role of laser technology promoters. However, in 2012, due to poor sales, Mitsubishi, a pioneer of laser TV, issued an official statement: "The existing production model has been unable to maintain the company's normal operation, so the company no longer produces DLP and LaserVue laser TV.
Although in many waves of display technology, domestic manufacturers are in a state of following, but in the field of laser TV, domestic manufacturers have finally seized the opportunity. In 2014 alone, domestic manufacturers such as Hisense, Optoma, Changhong, Hualu, Konka, Simmer and Yidian have launched laser TVs, which means that the "explosion period" of laser TVs has come!
The working principle of laser TV:The working principle of laser TV is also easy to understand. It is mainly composed of laser, light deflector and screen. The laser TV is mainly composed of a laser, a light deflector and a screen. It uses a semiconductor-pumped solid-state laser to generate R (red), G (green), and B (blue) continuous, three-wavelength laser light sources. The TV signal controls R , G, B laser scanning images.
Laser TV display principle
Laser TVs use lasers as light sources, and no longer need to use light bulbs as light sources. The first is to use a very high-power laser light source to collect more than 100W of light energy per square meter. High energy density is the key to achieving high brightness of laser TV light source, otherwise it will not be able to display a picture with sufficient brightness.
Secondly, the fluorescent pink wheel rotating at high speed is also necessary for laser TV. On the color wheel, phosphors of different colors are coated in sections. When the color wheel rotates at a high speed, different primary colors of light can be emitted, and we can see colorful pictures. At the same time, the high-speed rotating color wheel also has another very important function, which is to quickly reduce the temperature of the phosphor, so as to avoid being damaged by the high-power laser, and has achieved the purpose of normal light emission.
Fancy a simple laser TV screen, there are many knowledge
In addition, the screens used in laser TVs look like LCD TVs, but they are actually quite different. Laser TV screens all use cold light screens, that is, screens that do not require power. In addition to the glass substrate, a multi-layer film is added to reduce the diffuse reflection of light and make the picture more clear.
The advantages of laser TV:1. The "laser" of the laser TV is 100% monochromatic light, and the R, G, and B color lights are separately modulated, and the color effect is very ideal. In this way, the color gamut can theoretically exceed the NTSC color gamut by more than 110%, which is a grade higher than the OLED 100% NTSC color gamut. The improvement of color gamut can not only make the picture look more transparent, more realistic and layered, but also the sharpness will be greatly improved with the increase of color saturation.
Since the backlight of the laser TV is R, G, and B lasers, only one "screen" is needed, which can be made thinner and suitable for home use. The light of the laser TV reaches the human eye through reflection without flicker, which makes the light softer and reduces the damage to the human eye.
2. The screen size of the laser TV is flexible, and can be projected onto various material surfaces (curved surfaces can also be used), and is suitable for almost all TV standards such as NC system, PAL system and SECAM system.
3. Ultra-low power consumption, health and environmental protection. The power consumption of a 100-inch laser TV is only equivalent to that of a 40-inch LCD TV. The room temperature life can generally reach tens of thousands of hours. If it is calculated according to 10 hours of daily use, the life of the laser TV can reach 10 years, so it is a kind of Long life and high reliability products.
What are the advantages and disadvantages of Hisense laser TV and Hisense laser TV price?As early as 2007, Hisense's laser TV layout has been launched, with complete hardware vertical integration capabilities from R & D, design to production. Up to now, Hisense has 141 technology patents, and can control 70% of its manufacturing costs in its own hands. This is also Hisense's objection to boldly push the internal support of laser TV.
Hisense has 141 technical patents and can control 70% of its manufacturing costs in its own hands
In his speech at the press conference, Liu Hongxin, president of Hisense Group, fully demonstrated the confidence and persistence of laser TV technology. "The reflective imaging display of laser TV and the matching Fresnel passive optical screen can make the viewing process healthier and more comfortable. The power consumption and power consumption are about 1/2 and 1/10 of the similar size LCD TV, and the weight is only 1/10 of the similar size LCD TV. We judge that with the serialization of laser TV, 2016 will become a laser In the first year of theater TV development, laser TV will compete head-on with large-screen LCD TVs over 70 inches. "
Hisense grasped the major opportunities for industrial transformation and upgrading in a timely manner. The mass market of laser theater TVs will also activate the super-large-screen TV market, which will be very competitive in both domestic and international markets. In addition to the original technical advantages, the second-generation laser TV launched this time has added multi-size coverage, from 85 inches, 100 inches to 120 inches, to meet the needs of application scenarios.
Hisense second generation laser TV
The principle of laser TV optical imaging + laser reflection + passive bionic screen makes the light enter into the eyes like a theater, creating a more comfortable viewing effect, minimizing the glare and strobe of the glass screen, the light is softer and can be true Restore the colors and details of nature, and have a better sense of presence.
The principle of optical imaging + laser reflection + passive bionic screen makes the light reflect into the eye like a theater
Hisense Laser TV has made bold innovations in the design of the optical path. The original telecentric structure optical path design has expanded a wider light transmission channel and the brightness performance is better. The use of independent intellectual property rights of the same frequency laser coupling technology, color conversion, interference elimination technology and virtual expansion technology and other multiple advanced methods make the laser TV colorful, 2 to 3 times larger than the ordinary TV color gamut, reaching 116% NTSC color gamut Cover and add the application of HDR technology to make the color return to reality, and the details of the highlight and low-light parts of the image are vividly displayed.
Although laser TV has an all-round improvement compared to LCD, OLED and projector, we must clearly see that laser TV at this stage is not without its shortcomings. Although the brightness improvement is very obvious compared with the projector, and it can be seen clearly in a bright environment, it still cannot achieve the effects of LCD and OLED TV, and it has a relatively large impact on the picture in bright scenes.
Resolution is currently the most intuitive problem. Nowadays LCD and OLED generally achieve 4K, and higher 8K products are not uncommon. Laser TV only achieves 1080P. Although this may be the factor that affects the look and feel, laser TV is also the same. You can work hard in this regard to create a more perfect visual experience.
Even though current laser TVs have an advantage over LCD TVs of the same size, they are still relatively expensive. 100-inch laser TVs start at 59999 yuan, which is still unbearable for ordinary families. We hope to see more and more people-friendly products in the future, and truly make laser TV "fly into ordinary people's homes".
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