Projection Display Technology Liquid Crystal Display (LCD). Most modern LCD imagers have resolutions up to 1920x1200, and home theater models typically use 1920x1080 (1080p) imagers. Higher resolutions are possible, but not common. This projector can accept and display ultra-high-definition video signals, but the actual number of pixels on the screen is only half of the 8.3 million pixels in the signal. LCoS is a variant of LCD technology. Commonly used LCoS imagers have reached 4K resolution and can be switched at up to 120 Hz, which enables functions such as 3D, frame interpolation and pixel-shifting Ultra HD. However, at 120 Hz, they cannot do pixel-shifted UHD and 3D at the same time. LCoS is generally considered to have the best natural contrast and black levels of all digital projection technologies. DLP (Digital Light Processing) is the latest digital projection technology and one of the most popular today. DLP can provide true UHD (3840x2160) resolution. DLP projectors use one or more electromechanical imaging devices called DMDs, or digital micromirror devices. These tiny pixel-sized mirror arrays are up to 8.3 million in a 4K-resolution DMD just 1.38 inches wide.

Buying a projector means choosing between three different light sources and three imaging technologies, then making sure the projector has enough brightness for your environment and desired screen size, not to mention enough contrast and color accuracy to enhance your viewing experience. For newbies, this is a hassle. why a projector? Simply put, when it comes to watching movies or playing video games, bigger is better. Sitting at an appropriate distance from an image of 100 inches or larger allows for more detail to be seen, allowing for an immersive viewing experience. Other than that, unlike TVs, which illuminate your eyes with bright emitted light, projections are reflections on the screen. This is how we look at most objects in life, and we see ambient light bouncing off of them. Therefore, the projected image will be more natural. Projection light source The light source of projection is mainly divided into lamp, laser and LED projection.

The imaging principle of the projector is actually relatively simple, all of which are displayed through the reflection of the lens, and the projectors we often use are mainly divided into three display technologies, LCD, DLP, and 3LCD. Let's take a look at the imaging principle of the projector. 1. LCD display technology Commonly known as a slide projector, it uses an LCD screen as a display panel. The image quality is relatively general, mainly because of low cost and low price. 2. DLP display technology DLP technology is used for DMD Texas chip, which is digital light processing technology. This kind of projector should be bought as high-end as possible. 3.3 LCD Display Technology 3LCD is imaged by three LCD display panels. This technology requires better fusion technology. At present, only Epson uses this type of display technology. I believe that after reading the imaging principle of this projector, you will have a certain understanding of the display technology and imaging principle of the projector. In fact, it is still relatively complicated. LCD is divided into single-chip LCD and 3LCD, and the light source of opto-mechanical can be light bulbs or LEDs. DLP display technology can also use light bulbs or LED light groups, which can be further refined. separated. In short, everyone only needs to understand the display technology of projectors, and DLP and 3LCD display technologies are currently the most mainstream.

Commercial Portable Projector A projector that generally weighs less than 2 kg is defined as a commercial mobile portable projector, which is different from a light electronic notebook computer. The advantages of commercial intelligent portable projectors are small size, light weight, and strong mobility. Among them, long lifespan is an alternative to traditional slides and large and medium-sized projectors. The combination of thin and light electronic notebook computers and commercial mobile projectors is a good choice. Mobile business users are the most popular when it comes to mobile business presentations. office projector Conference training projectors are usually used in schools and enterprises. They use mainstream resolution and clarity. The lamp brightness is around 2000-3500. The weight is moderate, and the brightness, heat dissipation and dust resistance are better. It is suitable for installation and short Distance movement, rich functional interface, easy maintenance, and relatively high performance-price ratio, suitable for mass purchase and popular use. education projector Compared with mainstream ordinary projectors, educational projectors

Nowadays, more and more young people are replacing TV sets with projectors. As an electronic picture product with household, commercial and teaching functions, what is their quality and safety status? What are some tips to choose from? Let's take a look together. Our projector, also known as projector, is an electronic imaging device that can project image, sound, picture or video onto the screen by wire or wirelessly. BD, computer game console, etc. connect to play the corresponding video signal. Projectors are widely used in villa homes, offices, schools, office education and entertainment work. Different projection methods, there are different types such as CRT, LCD, DLPled laser. The classification according to the actual application environment is as follows Home Projector It is characterized by a brightness around 2500 lumens (as the projector progresses, this number keeps increasing, and the ratio is very high), the projected image width ratio exceeds 16:9, the various video ports are complete, suitable for playing movies and

Introduction to Projectors A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to a computer, VCD, DVD, BD, game console, DV, etc. through different interfaces to play the corresponding video signal. Projectors are widely used in homes, offices, schools and entertainment places, and there are different types such as CRT, LCD, DLP, etc., according to different working methods. Projectors are classified into the following five categories according to the application environment of the projector: 1. Home projector: It is mainly optimized for video. Its characteristics are that the brightness is around 1000 lumens, the contrast ratio is high, the aspect ratio of the projected picture is mostly 16:9, and the various video ports are complete, suitable for playing movies and High-definition TV, suitable for home users. 2. Portable projector: A projector with a weight of less than 2 kg is generally defined as a business portable projector, which is comparable to a thin and light notebook computer. The advantages of business portable projectors are small size, light weight and strong mobility. They are a substitute for traditional slide projectors and large and medium-sized projectors. The first choice for mobile business presentations. 3. Education projector: generally positioned for school and enterprise applications, using mainstream resolution, brightness of about 2000-3000 lumens, moderate weight, better heat dissipation and dust prevention, suitable for installation and short-distance movement, functional interface comparison Rich, easy to maintain, and relatively high performance-price ratio, it is suitable for mass purchase and popular use. 4. Mainstream engineering projectors: Compared with mainstream home projector, engineering projectors have larger projection area, longer distance, high brightness, and gene

In the current epidemic, education is the priority. Many schools have adopted the method of online live classes to teach and guide children's courses remotely. Pain points of online classes The emergence of online teaching has caused children to spend more and more time in contact with mobile phones, iPads, and computers, which will cause irreversible damage to children's eyesight. Children look down at their mobile phones all day long, and the cervical spine is prone to problems, which can even lead to muscle atrophy and affect the activities of the lower limbs. Many parents have a headache and can't do anything about it. How to make children more comfortable and healthy to receive online education? Black technology to help you solve Here to share a black technology---smart portable projector let the kids Stop looking down! No need to stare at such a small phone screen for lectures! Give your kids a learning experience like watching a big screen TV!

Commonly used electronic products include TVs, computers, tablet computers, mobile phones, etc., but these products are all direct light, and the screen of mobile phones and tablets is small, and the damage to children's eyes is irreversible. Here we recommend using a projector. Why is it better to use a projector for online classes? 1. The diffuse reflection imaging of the projector can reduce eye irritation; 2. The screen size of the projector is more flexible and the viewing range is wider 3. The projector is more suitable for combining the correct viewing distance and eye habits; But many people will ask if the projector is not only used in classrooms and conference rooms? Buying one will cost thousands of dollars! ! ! Big and bulky! ! ! Have to find a master to install it! ! ! It's really expensive and troublesome. Do you think this is the kind of projector I'm talking about?

Demonstration model information: Brand Model: D025 System version: Android6.0 When choosing a home projector, you need to pay attention to the brightness of the projector. If the brightness is too low, the picture of the projector will not be bright enough; the second thing to pay attention to is the resolution. If the resolution is too low, the picture will be blurred and unclear. ; Also pay attention to the projection ratio. If the projection ratio is too large, the distance required to project a large screen will be farther. Take the Bluetooth home projector as an example: A few things to keep in mind when choosing a home projector are: 1. Pay attention to the brightness of the projector. If the brightness is too low, the projector screen will not be bright enough. The brightness of the D025 home projector can reach 700ANSI lumens to ensure that your screen will be bright enough. 2. What should be paid attention to is the resolution. If the resolution is too low, the picture will be blurred and unclear. The D025 home projector has a native resolution of 1920*1080p, and also supports high-definition 4K. 3. Pay attention to the projection distance. If the projection ratio is too large, the distance

When it comes to projectors, many people should still stay in the cognitive stage of four or five years ago or even longer. However, driven by the Internet, projectors have also moved towards the road of intelligence. The projectors have become more convenient to connect, have their own operating system, and can play with a power cord; and with the maturity of LED light source and DLP display technology , projectors are also getting smaller and smaller, and even portable and can work without plugging in. This is the status quo of smart projectors, and of course there are many features that have not been mentioned. Screen projection function The functions of smart projectors are very rich. What many people care about here must be the screen projection function of the projector. Smart projectors support wired screen projection and can also support wireless screen projection. Wired screen projection can directly connect various entertainment devices such as computers, Switch, PS4, Blu-ray players, and even smart TV boxes; wireless screen projection can be connected to mobile phones, pads, and computers. Recently, children are taking online classes at home, using mobile phones and Pad viewing, the screen is small, and the damage is also large. The one-click projection of the mobile phone to the projector not only has a large screen but also protects the eyes. Of course, adults can also use one-click wireless projection to watch videos, and sometimes even processing documents with mobile phones can also be projected on the projector, and even video conferences can also be used.

There are many reasons why you might want to install a projector on your TV: you might want a larger image than your TV, or you don't like the look of the TV in your living room, or you might want to spend a relaxing time with your family during a movie night with friends or family. Since the cinema is not an option for most people now, many friends ask what projector to buy at home. What Home Projector Should You Buy? DLP or digital light processing and LCD projectors are bulb based so bulbs will eventually degrade, but they are much cheaper than laser projectors. DLPs tend to be smaller and more portable, and they offer more contrast and darker blacks. LCDs tend to have sharper, sharper images and look brighter than DLPs even at lower lumens. Projectors with laser sources are not bulb based and therefore require less maintenance; on average, the laser lasts 5 times as long as the bulb. Unlike bulb-based projectors, which emit light through a color wheel to produce the image, laser projectors only produce the exact colors needed for the image. This efficiency results in brighter images, very accurate colors, and deep black levels and contrast. However, all of this comes at a higher price. Low-end laser projectors typically cost around $2,000, although you can find some smaller projectors for less. Then there's the throw ratio, which is the size of the image versus the distance from the surface. Traditional projectors are located behind the audience, ideally 10 t

Now more and more people choose to install wifi protable home projector, and even many families choose not to install TVs and replace them with HD mini projector. So, can projectors really replace TVs completely? 1. What are the advantages of TVs compared to projectors? (1) Higher brightness In recent years, with the continuous evolution of wifi mini home projector, its picture quality and clarity have improved a lot, but compared with TVs of the same price, it will still be slightly inferior. The resolution and clarity of the picture, especially the upgrading of technology, high-end TVs have a wider color gamut, more realistic clarity and contrast, and richer colors, which are difficult for projectors to achieve. (2) Use period The replacement of TV sets is accelerating, and many families will want to replace new TVs within 5-10 years, and during this time, TVs will hardly experience any major failures. In contrast, many of Xiaojin's friends who have installed projectors at home will only use them fresh for a year or two, and then they will start to dislike the not-so-clear picture, except for the larger picture.

Before we buy a projector, the first thing to confirm is not the budget, but what we want to buy the projector for. Are you chasing dramas in the bedroom or replacing the LCD TV in the living room? These are the first things to consider. If you know the purpose, you will know what kind of projector you should choose. 1.What is the main purpose of the purchase? Determine which machine to buy For example, if you are chasing dramas in the bedroom, the product should not be too large, otherwise there will be no place to install it in the bedroom, and secondly, it should be equipped with an intelligent system, so that it is convenient to use. At the same time, because the bedroom is generally positioned as a "second screen", the budget of many families is not too high, which is basically around 3,000 yuan. In fact, considering this, there is already an approximate range of what projection to choose. If it is used in the living room instead of a TV, the long-term effect of the light source and the brightness of the product need to be prioritized. The traditional light bulb light source is not suitable for long-term startup, after all, the brightness decayed too fast, and the products that choose laser light source mainly include laser TV and laser home projector. Laser TV is more expensive, generally around 10,000 yuan, so Is the budget acceptable to you? What is the main purpose of buying a laser TV or laser projection? Whether you only watch traditional TV series or blockbuster movies, you can choose a product

1. Move the front and rear positions of the projector and change the projection distance of the projector to adjust the size of the screen. 2. In the projector's system settings, find the digital zoom function and adjust the global size of the screen. 3. Some projectors have a zoom ring, we just need to move the zoom ring to adjust the size of the screen. 4. Content expansion: Many projectors now have a keystone correction function. Although this function itself is not for adjusting the screen, it can also adjust the size of the screen through manual keystone correction.

Wherever possible you want to position your projector directly perpendicular to the screen. If your projector is mounted to the ceiling, the ideal position is generally aligned with the top of the viewing surface. If you want to place your projector on a dedicated shelf in the back of the room, you`ll almost certainly need a projector with adjustable vertical lens shift to properly align it with the screen. Ideally you want to place your beamer out of the way where people walking through the beam of light won`t disrupt the picture for anyone else in the room. This is why you so often find projectors mounted to the ceiling. What is the best distance for a projector? The best distance for your projector comes down to the throw ratio of the projector. For example if you`ve got a regular throw projector, with a throw ratio of 1.5-2:1, you want to have it placed about 1.5 to 2 feet away for every 1 foot of screen width. Where should I mount the projector? If you`re only going to be using the projector in one location, mounting the projector on the wall or ceiling is the way to go. By using a project

It is not difficult for friends who have used projectors to find a phenomenon, standing next to the projector will feel gusts of hot wind. So, have you ever wondered why the projector gets hot? This article will explain the phenomenon of projector heating and how to effectively dissipate heat. 1. Why does the projector get hot? A very important part of a projector is the light bulb. One of the first conditions for a projector to have a clear picture is that it must have sufficient brightness, so many projectors have very high bulb power. So when we turn on the projector, the light bulb starts to run in the small space inside the projector. It takes us about two hours or more to watch a movie with the projector, so the long work will make the projector light bulb Generates enormous heat. However, the projector has its own cooling fan. When the projector generates heat, the cooling fan will also dissipate the heat, so the heat dissipation hole of the projector will discharge a lot of hot air, which is a very normal phenomenon. Due to the development of the intelligent era, the projector industry has produced many projectors with built-in intelligent systems in accordance with the requirements of most people, which has led to an increase in the accessories inside the projector. When the projector is working, various accessories will generate heat, and t

For friends who want to start a portable projector, light, small, and easy to use are basically enough, and there will be no high requirements for performance configuration. Because it is limited by the existing technology, it needs to be extremely portable and ultra-high image quality, and it will take a certain amount of time to realize it temporarily. However, portable projectors often do not stay in the same place for a long time: for example, they may just go out camping to play a movie temporarily; turn on the portable projector at a party to liven up the atmosphere; The picture is all right, it can be called an entry-level mobile cinema. However, when purchasing a portable projector, you should also pay attention to the following two points: One, it is small enough. Portable projectors, as the name suggests, are light in weight and small in size, so they are very light in the hand, and even girls with small hands can easily pick them up. Second, the battery life is sufficient. Whether the battery life of the built-in lithium battery in the portable projector can meet the basic needs of users, and it does not need to be charged frequently when going out. Basically, it is enough for a portable projector to meet the above two points, and the remaining functions are bonus items, such as laser autofocus. Because the portable projector needs to move frequently, it is very convenient to have a fast autofocus function.

(1) Look at technology The two technology projectors currently on the market are DLP and LCD. DLP projection has high contrast, rich dark layers, rich details, and clear text, but the saturation is not good enough, and it is not vivid enough. LCD projected images have good color saturation and rich color gradation, but text edges are prone to shadows or burrs. (2) Look at the parameters 1. Brightness Simply put, the higher the lumen, the brighter the picture. Many businesses have different lumens identification units, including ANSI lumens, ISO lumens, and direct lumens (LM), and the brightness values of different units are quite different. ANSI lumens is an international unit. If the merchant does not mark this unit, you can ask them how much ANSI lumens are. The light in the home environment is relatively bright. It is recommended to buy a home projector with 800ANSI lumens or more. If you don't mind watching in a darker environment, 500-800ANSI is enough. 2. Resolution Generally speaking, the resolution refers to how many pixels the projection screen is divided into, such as 720P, which is often referred to as 1280×720 pixels. The more pixels, the more delicate the picture, generally choose 1080P high-definition video standard for home use, and the high-definition experience is better. 3. Keystone Correction In actual viewing, it is difficult to keep the position of the projector and the screen vertical, so keystone correction can assist in correctin

Points to note when purchasing a projector: 1. Imaging technology The color of LCD is relatively poor, and it is mostly used for projectors with a hundred yuan level. The color accuracy of 3LCD is good, but the response speed is relatively slow. DLP is better than LCD, with good color reproduction, long service life, fast response speed, but the contrast is still insufficient, and it is mostly used by mainstream smart projectors. 3DLP is only used in movie theaters, and the cost is extremely high, and it can achieve 4k viewing effects. LOS chips are usually used in mid-to-high-end machines, with good reproduction, contrast, and excellent performance in dark details, but the service life is relatively short. 2. Resolution When we usually watch movies, we often see a number in the upper right corner, such as 480p, 720p, 1080p, which is the resolution. The higher the resolution, the better the picture effect. There are standard resolutions and compatible resolutions. The standard resolution is the "true" resolution that is projected. If the budget is sufficient, it is recommended to choose 1080p.

If the heat inside the home projector is not removed in time, the life of the projector lamp will be affected and the projector will also be burned out. ①At any time, make sure that the cooling fan of the projector is running normally. If the fan fails, be sure to start the fan after repairing it. ②Ensure the air circulation around the projector, especially the fan exhaust, which needs to keep a certain distance from the surrounding obstacles. ③After the lamp is turned off, always run the fan until the exhaust air cools down. At the end of the demonstration, the lights will be very hot. If the fan is off, the lamp retains heat and cannot cool at the constant rate allowed by the forced airflow ④If the projector has a filter, keeping it clean will help maintain the efficiency of the cooling process. Particles in the air can accumulate on the projector filter. The dirtier the filter, the less air will circulate in the projector, and the more heat will accumulate

Connect Bluetooth speakers. The sound quality of general projectors may be poor, and music can be played by connecting a dedicated Bluetooth speaker. Connect the mouse. In the case of remote control failure or loss, you can use the mouse to control the projector, and it is also a wireless Bluetooth mouse. Gamepad. When using a projector to connect to PS, etc. to play games, you can connect the handle to the projector Connect the mobile phone. Just like a mobile phone matching a car and a Bluetooth speaker, when you want to use the projector speaker, you can use the mobile phone to match the projector to play the music in the mobile phone.

1. Installation environment When we buy the projector back, whether it is placed directly on the cabinet or by various installation methods such as hoisting or wall mounting, we need to place the projector in a ventilated environment around the projector, and the surroundings of the projector and the projector`s Do not accumulate other debris on your body 2. Regular cleaning Since most of the projector`s heat dissipation vents are hollowed out, the circulation of air will cause a lot of dust to accumulate in the location of the vents. If they are not cleaned for a long time, the air inside and outside the projector will be obstructed, that is, the heat dissipation rate of the projector will decrease. 3. Ensure heat dissipation When the projector needs to run for a long time, it is best to let the projector rest for about half an hour every four hours, so as to cool the projector and ensure its heat dissipation rate. In addition, when we don`t use the projector, don`t rush to cut off its power, because when the power is turned off, the projector`s cooling fan will also stop working, so the residual heat inside the projector cannot be diffused. We should first use the remote control or the top shutdown button to turn off the projector, wait for the cooling fan to dissipate the residual heat inside the projector, and then cut off the power.

The museum is located in Lingang District, Shanghai, covering an area of 38,000 square meters. It is the largest museum dedicated to astronomy in the world today. It was designed by American design company Ennead Architects, and its design is very different from other museums. There are no straight lines or angles here-the concept is inspired by the orbits of celestial bodies and the geometry of the universe. Instead, the three main architectural components of the building-Oculus, inverted dome, and sphere-are used as astronomical instruments to track the sun, moon, and stars. But the main installation is in the building. Here, many exhibits are made with cutting-edge audio-visual technology to provide visitors with an interesting and immersive experience. These incredible projections are provided by more than 40 projectors in almost every venue. Visitors can admire the surrounding outer space scenery from the walls and ceiling. Each presentation is well thought out and you will be amazed, and you want to enjoy them endlessly. The types of galaxies, constellations, and planets in our and neighboring systems cannot leave anyone indifferent. As the largest structure dedicated to this particular industry, the Astronomy Museum has attracted the attention of the public from all over the world. Projection technology helps to organize a space suitable for ordinary audiences and students who are keen to study celestial bodies.

The newly developed technology in recent years has low heat generation and is called cold light source. Due to the small size of the light-emitting parts and the small size of the heat dissipation system, this type of projector is small and portable. Its advantage is that it has a long service life, reaching 2W-5W hours, energy saving and environmental protection, and the size of the projector can be made very small, and it can be used in all handheld devices in daily use, so it is quickly accepted and loved by consumers , LED light source is booming in projector light source technology, and the technical level and sales volume are rising every year, which is the future development trend.