#3000mw laser pointer

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Hisense 4K Laser TV All-round Evaluation

TV screen experienced from CRT to plasma and then to the LCD era after the change, the recent long period of time seems to be some stagnation, subject to the LCD itself, the principle of light restrictions, size, power consumption, technology and other aspects are close to The IFA exhibition held in early September seems to give us the answer, many TV manufacturers to market blue laser pointer TV, which Hisense is released the world's first DLP ultra-short focal length 4K Laser theater TV, caused a sensation in the industry is not small. The other domestic brands such as Changhong, TCL is also synchronized to force the laser TV, laser television market in 2016 can be lively exception.

Hisense as a leading domestic appliance enterprises, this year began to force the high-end large-screen market, especially in this year, with ULED's strong performance, Hisense 55-inch and above the high-end TV market share has exceeded Samsung to become the big screen high-end new king ; According to the data in July, Hisense laser TV has occupied more than 85-inch large screen 49.64% market share, it can be said is the undisputed industry NO.1! Hisense laser TV has been developed to the third generation, New addition to the appearance and performance to further strengthen, the resolution is raised to the 4K level, bringing the ultimate viewing experience. In addition, the latest 4K laser TV What are the different? Today, this new product came to our evaluation room, the following to send you a detailed evaluation.

I believe most people still do not understand the concept of laser television, so here I first briefly, laser TV simply and the principle of the projector is similar to this technology to first image signal after digital processing, and then again Projecting light through a series of complex lenses. It is based on TI (United States Texas Instruments) developed digital micromirror device - DMD (Digital Micromirror Device) to complete the visual digital information display technology. Specifically, the DLP projection technology uses a digital micromirror (DMD) chip as a key processing element to achieve digital optical processing. So in the light-emitting principle, the 20000mw laser pointer TV and traditional TV there is essentially the difference between the traditional LCD TV is illuminated by the backlight, and liquid crystal molecules to achieve image deflection display, and laser TV is the light projected onto the media (such as walls, Curtains, etc.), through the reflection of light to the image transmission to the human eye, and in a very short physical distance of 100-inch large screen projection.

Now that we know the principle of work, we can generally outline it compared to traditional TV some of the advantages of the first laser light source life is much longer, the brightness dropped to 80% of the previous almost 50,000 hours; followed by brightness High color gamut, Hisense 4K laser TV official nominal brightness up to 3000 lumens, color gamut coverage of 116% of the NTSC, compared to OLED and quantum dot TV is even better. Many people will say that the current price of LCD TVs have been so low, why Hisense also adhere to push the laser TV? In fact, most people's needs are only 60 inches in the following specifications, this is not the laser TV to target the market. More than 80-inch large-screen TV, the price has been high, and the success of laser TV on the picture quality comparable to LCD TVs, more importantly, the price is only the same size LCD TV 1/3, for the big screen display with To a new cost-effective solution.

At the same time Hisense 4K laser TV also broke through its three major technical difficulties: First, the use of high processing power optical engine, its processing power than 2K laser TV products increased by 300%, so that 8.3 million beam of fine control, to achieve 830 4K laser TV need high-resolution lens design, Hisense 4K lens to achieve the optical resolution of 186 per millimeter beam; third, 4K laser TV manufacturing to achieve micron-level material control accuracy and the lens Installation precision, Hisense 4K 10000mw laser pointer theater TV using a high-precision manufacturing process, machining reached a limit of close to 10 micron accuracy, the lens mounted precision of 5 microns, the error is less than a hair diameter of 1 / These together have contributed to the Hisense laser TV is different from other products of the unique advantages.

Hisense 4K laser TV, including the screen, host, stereo three parts, which is part of the screen is 100 inches large imported Fresnel passive bionic screen, rare earth technology integration of rare metals, such a large screen also has a very narrow border , Really brings the immense shock of the presence and immersion. Of course, the biggest feature of this bionic screen is its soft viewing effect, it overcame the problem of traditional TV stroboscopic, natural and comfortable, but also shield the ambient light, and projection is different in the bright light can also watch, And the color performance better. Hisense 4K laser TV is equipped with two remote control, one is to operate the video playback smart remote control, the other is to control the audio remote control, they do not interfere with each other, holding is quite comfortable. Intelligent remote control and Hisense TV's consistent, mellow, full of pebble shape, fine skin touch, can let you put it down. It also comes with a fast-switching button, but also can be customized in the system a key direct function, speed, minimalist control experience to meet all family members entertainment needs.

Due to the different light principle, we can not use the test of ordinary television test equipment for testing. So we specifically use the projector test standards for testing this product, the test link, including objective data and subjective perception of two parts, including the objective test part of the maximum brightness of the product we tested, that is, the projector in the brightest mode Brightness, contrast, light bulb mode are adjusted to the highest) of the average brightness of the screen. From our actual test results, Hisense 4K laser TV's maximum brightness reached 6400 lumens, has greatly exceeded the nominal value. In order to better display the quality of the product, we will put it together with a common LCD TV to do a comparison, you can see Hisense 4K 3000mw laser pointer TV color reproduction better treatment, the color is more true nature, and LCD TV clear image The treatment is too rich and gaudy, the color has been distorted. At the same time because of the 4K resolution, so before being criticized for more details of the part also did not strive.

For the laser TV, there is no light leakage occurs, light control is its inherent advantages. In the display of all black, the host is not projected light. Of course, contrast performance is significantly better than ordinary LCD TV, Hisense 4K laser TV also supports HDR technology, we see the following chart in the HDR format video playback, bright and dark contrast is very obvious, Guan Ying artifact title can be well deserved . Dynamic picture clarity is also one of the advantages of laser television, the following test film real shot you can see, the edge of the house is very clear, through the window, you can clearly see the branches of the peripheral branches and the passengers inside, and there is no Smear or virtual phenomenon, significantly better than the ordinary LCD TV. Test process, the power of the 100mw laser pointer TV is maintained at 400w or so, is significantly lower than the same specifications of the LCD TV, the performance of energy-saving fairly well. We can see the true color of nature, has been comparable to Japan and South Korea high-end LCD.

Beautiful, simple, easy to use has been a sign of Hisense VIDAA system, Hisense 4K laser TV also equipped with Android5.1 based on the development of VIDAA intelligent system to poster-like picture-based, plate classification is rich, clear hierarchy, operational logic Simple and clear, and there is no repetitive content of the complex, the number of films and television equipped with ultra-genuine Chinese video content. More poly good use, together fun, together to enjoy home, poly good school, poly-purchase and other precise positioning of the plate. Hisense VIDAA Internet TV and China, Fantastic Art, Tencent video industry-leading video platform to reach a strategic cooperation, with 15,000 film resources, 150000 sets of TV drama resources, TV drama average daily update volume of 10 or more. It can be said, VIDAA film and television resources and update the number of resources has been far more than the industry's flagship content of the Internet TV brand.

Just click on the remote control to see the movie icon to enter the player interface, which is not only a story, there are related recommendations, people, tags and other useful features, easy to use. According to the source quality, divided into SD, HD, ultra-clear, blue, 4K categories, the user can choose according to their own network and display device corresponding source. It should be noted that the current part of the latest video is paid to watch, 49 yuan per month, you can watch all the paid content. But even if the user does not buy members, still ensure that 92% of free HD content to watch, and 1080P HD video resources accounted for more than 90%.

Through the test can see Hisense 4K 50mw laser pointer TV in all respects is the top, first of all simple and elegant design, installation and transportation are more convenient, while compared to traditional LCD TV more space-saving; in terms of quality, has been significantly better than ordinary Of the LCD TV, while many LCD TV can not match the advantages, such as just less than 0.5 meters away from the wall space can be projected more than 100-inch display screen, shocking sound unity, with a theater-rated Viewing experience. And in the content, equipped with Hisense VIDAA system is simple and easy to use, with the content and film and television drama resources have gone beyond most other brands, 4K high-quality large want to see.

Hisense as the first layout of the laser TV and mass production listing of the brand, after several generations of iterative upgrades, it can be said that fully equipped with high-end large-screen LCD TV Competition strength, color, viewing experience, life, power consumption , Transport convenience and so has a great advantage, in a sense has been significantly better than the same specifications of the LCD TV, plus less than 1/3 of the price is definitely the first choice for high-end user components home theater . Finally, I would like to say in the current field of high-end LCD core technology is still monopolized by Japanese and Korean companies today, and Hisense 4K 30mw laser pointer TV most of the core technology is their own research and development, all grasp the industrial chain, which even more commendable, this powerful competition Power also allows consumers to enjoy the inexpensive TV products, as the ultimate beneficiaries.

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Using Laser Technology to Decrypt the Cause of Micro Electronic Heating

In the 1970s, a man named Gordon Moore predicted his performance in the semiconductor industry by doubling the chip's performance every 18 months. This prediction over the past 40 years all the way to prove his right, and the transistor density of the chip also followed by doubling, doubling, and then double. For people who are familiar with the chip, high-performance is usually associated with this high fever, with our dependence on electronic products increasing, mobile phones, laser 5000mw,flat panel, notebook computers and other heating problems, not only negative impact on the experience, The manufacturers to design a more beautiful, lightweight new products.

To solve the electronic products, especially micro-electronic devices of the heat, we must first understand the root causes of these heat generated. And the answer may be hidden in the latest paper published by Dr. Liao Linlin. The former Sichuan Province college entrance exam tutor from Professor Chen Gang, this year from the Massachusetts Institute of Technology received a doctorate. His research team accurately measured the interaction between electrons and phonons, the results not only explain the micro-electronic equipment, the causes of fever, but also can be used to further improve the performance of thermoelectric materials.

With the development of semiconductor chips, more and more transistors are stuffed into smaller and smaller spaces. Massachusetts Institute of Technology engineers recently found that mobile phones, laptops and other electronic devices will be hot, the main reason is that electronic and thermal energy to carry the phonon interaction. This interaction was once overlooked by scientists, but the latest research results show that in microelectronic devices, this interaction has a significant impact on heat dissipation, the related research results published in the October 12 of the "Nature Communication ".

In the 1970s, a man named Gordon Moore predicted his performance in the semiconductor industry by doubling the chip's performance every 18 months. This prediction over the past 40 years all the way to prove his right, and the transistor density of the chip also followed by doubling, doubling, and then double. For people who are familiar with the 3000mw laser pointer chip, high-performance is usually associated with this high fever, with our dependence on electronic products increasing, mobile phones, flat panel, notebook computers and other heating problems, not only negative impact on the experience, The manufacturers to design a more beautiful, lightweight new products.

Thermoelectric materials have a very wide range of applications, including thermal detectors and NASA's latest proposed for space exploration equipment, nuclear batteries. The phenomenon of electron scattering by phonons is not new, but has long been neglected by scientists. With the continuous development of semiconductor technology, the concentration of electrons becomes higher and higher, this phenomenon can not be ignored. Scientists must think about how to manipulate the electron-phonon interaction in order to increase the efficiency of the thermoelectric device on the one hand and prevent the microelectronic device from heating up on the other.

Phonon and electronic bumper car games

Whether in 20000mw laser transistors (semiconductor materials, such as silicon) or wire (conductor material, such as copper), the electronic current movement is the main medium. The reason why resistors exist is that the electrons flow through a roadblock - a phonon carrying thermal energy collides with electrons, pushing it out of the current path. For a long time, scientists have been investigating the effects of electron-phonon interactions, but the focus has been on electrons rather than on how the interactions affect phonons. "Scientists rarely study the effects of this interaction on phonons, because they think this effect is not important," Liao Lin said, "but Newton's third law tells us that each force has a reaction force, but we do not know what The reaction will become important. "

Scattering, heat is difficult to coexist

According to Liao and colleagues, when the electron concentration exceeds 1019 electrons per cubic centimeter, the interaction of electrons and phonons in silicon, the most commonly used material in semiconducting materials, can produce a large scattering of phonons. When the electron concentration reaches 1021 per cubic centimeter, the heat dissipation capacity of the material will be reduced by phonon scattering by 50%. "This is a very significant effect, but many people are doubtful," Liao Lin Lin said. This is mainly because in previous experiments with high concentrations of electronic materials, scientists have assumed that the cooling capacity of the decline is not due to electron - phonon interaction, but due to material defects caused. These defects are due to the doping of materials, silicon, for example, phosphorus and boron are commonly used doping atoms, the purpose is to increase the material's electron concentration. Therefore, to verify Liao Linlin's theory, it is necessary to separate the electron-phonon interaction and the influence of defects on heat dissipation capacity. The specific method of implementation is to increase the electron concentration in the material, but not to introduce any defects.

The team developed a technique called three-pulse photoacoustic spectroscopy to optically increase the concentration of electrons in silicon crystal thin films and measure phonon production in the material Of any impact. The technique is an extension of the traditional "two-pulse photoacoustic spectroscopy" in which the scientists accurately control the timing of the two blue laser pointer beams. The first beam produces phonon pulses in the material and the second beam measures the scattering or attenuation of the phonon pulses. Liao Linlin introduced a third laser beam, which can accurately increase the electron concentration in the silicon material without introducing any defects. After the third laser beam is emitted, the measurement results show that the phonon pulse decay time is significantly shortened, which indicates that the electron concentration increases the phonon scattering and inhibits its activity.

The experimental results show that the introduction of the third burning laser pointer can shorten the decay time of the phonon pulse. The larger the laser intensity (the higher the electron concentration), the shorter the decay time of the phonon pulse. The result was a great excitement for Liao Lin's team, which was a good match for their previous calculations. "We can now determine the effect is very obvious, and we confirmed it in the experiment," Liao Lin Lin said, "This is the first can directly detect the electron - phonon interaction on the impact of phonons experiment." Interestingly, The concentration of 1019 electrons per cubic centimeter, than some of the existing transistor is even lower, in other words, the latest discovery of this phenomenon is part of the existing microelectronics fever one of the culprits. "According to our research, this effect will become increasingly important as the size of the circuit gets smaller," says Liao. "We must seriously consider this effect and study how to use or avoid its effects."