What is a led projector. New wave: light-emitting diode (LED) projectors

When choosing a projector for your home, you should always remember that home cinema is still not a cheap pleasure. Of course, with a strong desire, you can get by with an inexpensive low-resolution projector. But in this case, using the cinema will be extremely difficult and burdensome.

If you decide to choose a projector for everyday use, then in this case you can save a lot. But in this case, the purchase of a TV with a large diagonal will be the most reasonable decision. But if you still decide to buy a projector, then you should consider several factors.

First of all, it is worth considering the minimum distance from the screen to the viewer and the projector. In order to ensure the best visibility of the image, the screen should be located no closer than two heights of the screen itself.

Also, special attention should be paid to the power of the lamp and its resources. Typical lamp life is typically 4000 to 5000 hours. The most important characteristics of the lamp is the brightness and uniform distribution of the flux. It is also worth looking at how the selected projector will be turned off. The lamp dims evenly or goes out smoothly. If there is a smooth attenuation, then this will provide it with a long service life.

Image resolution. This is probably the most main characteristic, on which the quality of the image will directly depend. Projectors that give a picture of high fidelity and clarity are the most expensive.

It is worth paying attention to additional functions. A large number of The projector has proprietary gadgets, for example, the most common are Shift lens. The more features a projector has, the higher its price will be. Therefore, before buying it, determine for yourself whether you will use a DVD drive or a USB connector.

As practice shows, some users may not need them at all when using them, if the projector is connected to a computer or laptop. If you are buying a projector with many features, then try to find out as much as possible about it at the store right away. For example, it is worth asking what video format it can play, if the possibility of firmware. Is navigation easy?

When purchasing a navigator, you need to have at least a small idea of ​​​​how it works. If we are talking directly about home theater, then DLP is very popular. Its main advantage lies in high contrast, high-quality transmission of dynamic scenes and high protection against dust ingress into the case.

DLP and LCD projectors differ in their imaging technology. In the light of the lamp, with the help of a prism, it is divided into rays of primary colors: green, blue and red, and then it falls on one of three small liquid crystal matrices. LCD matrices transmit light only at the points (pixels) necessary to create an image, after which the three light beams are combined again and create a complete image.

In a DLP projector, light first passes through a rotating color filter. It is then guided by a million small moving mirrors and projected through a lens onto a screen. Due to the movement of the mirrors in accordance with a certain color, the human eye already perceives a full-fledged image, although it is formed from a sequential projection of images in three primary colors.

In addition to LCD and DLP projectors, there are competing models - LED - LED projectors.

DLP or LCD: Which projector is better?

LED projector

Neither of the two technologies can be called ideal. Which projector is best for you depends on what you intend to use it for.

The advantage is that the dark and light tones of the image are finely graduated. But at the same time, their maximum contrast ratio is lower than that of DLP projectors, because the image cannot be created completely without light.

DLP technology allows small mirrors to be turned away in dark areas of the image, due to which the picture becomes truly black, and the contrast, accordingly, is higher than that of LCD. The disadvantage of a DLP projector is that the picture consists of separate images of primary colors. Fast-moving objects can develop a color trail, which is called the "rainbow effect".

LCD - film and video projector

LED (light-emitting diode) projectors are modern universal projection devices. The main advantage of the projector over other sources of information output is its mobility and less strain on the eyes - since the light is not emitted by the screen, but reflected from it. This is certainly not E-lnk technology, but something intermediate between it and a conventional LED monitor.

LED projectors have a number of advantages:

  • Long life light source. The service life of the LED light source is 20000-30000 hours. There will be a gradual, linear, imperceptible decrease in brightness, but it will not be quite a sharp drop in brightness to 50% of the original, as with lamp projectors after 3500-5000 hours of operation.
  • Price. They occupy an intermediate link between laser and lamp projectors, both in terms of quality and price.
  • Excellent color reproduction. Although it must be said here that there is some problem with the brightness in the green spectrum (see the section on selection). But, I would like to note that lamp projectors also have a similar problem - on the contrary, they have too much green spectrum.
  • High efficiency- with a small power consumption it is possible to have a large luminous flux. This allows you to make small mobile LED projectors that can be powered not only from the network, but also from the battery.
  • Small weight and dimensions- there are models weighing 200-300 grams.

Of the shortcomings, a relatively small luminous flux can be distinguished. For LED projectors, it ranges from 200 to 1500 lumens. This is enough to organize a home theater (500 - 1500 lumens) and show presentations with a slight dimming (1000 - 1500 lumens). If you need a more powerful light output, you can purchase a projector with a laser-LED light source.

Choosing an LED (Light Emitting Diode) Projector

Since laser and LED projectors are very similar, the selection parameters of the LED projector, its main characteristics are identical to the laser projector. Therefore, you can read about choosing an LED projector - it discusses the difference between a lamp, LED and laser projector, highlights the main criteria for choosing a laser and LED projector, and gives a rating of laser projectors.

7th place: Acer C205

This projector belongs to Acer's Portable LED projector series and is priced from 20870 rubles. The projector is equipped with a DLP matrix with a resolution of 854×480 pixels and a contrast ratio of 1000:1. At the same time, the luminous flux is only 200 lumens, which will allow the projector to be used only in well-darkened rooms. But at the same time, its weight is only 300 grams with dimensions of 27x144x108 mm.

The ratio of distance to image size is from 1 to 1.1 to one meter, which allows you to display an image with diagonal sizes from 0.38 to 2.54 meters. Supports 4:3 and 16:9 aspect ratio output. The projector has the minimum required set of interfaces: HDMI, USB 2.0 (type A), 3.5 mm audio input (mini-Jack). The projector is equipped with a remote control. At the same time, it has stereo speakers with a power of 2 * 2 watts. The projector can be powered both from the mains and from the battery.

6th place: Optoma ML330

Very interesting ultra-compact projector model. This projector has built-in OS Android 4.4 Kitkat. This allows you to use the projector without a personal computer, but directly connect the projector to the Internet, display presentations, etc. This will facilitate the organization of a home theater, and the small size will allow you to take the projector with you to the office or even vacation.

The projector has a DLP matrix with a resolution of 1280×800 pixels (WXGA) and a contrast ratio of 20000:1. The luminous flux is 500 lumens. The projection distance is from 0.26 to 3.09 meters, while the diagonal changes from 0.25 to 3.05 meters, the optical magnification is 1.2x. Has vertical keystone correction within ±40°. Supports multiple image formats - 16:10, 4:3, 16:9.

The number of connectors and supported interfaces is slightly more diverse than other projector models - the built-in Android OS affects. There is a standard HDMI; two USB ports: USB 2.0+USB 3.0; 3.5 mm audio output (mini-Jack), MicroSD card reader; Wi-Fi and LAN (RJ45). The control is performed using the remote control, there is a built-in speaker with a power of 2 W (mono). The weight of the device is only 460 grams with dimensions of 35x157x133 mm. The projector comes at a price from 27500 rubles.

5th place: Optoma ML750e

This ultra-compact projector has a DLP matrix with 1280×800 pixel resolution (WXGA) and 15000:1 contrast ratio together with a light source with a luminous flux of 700 lumens. The projection distance is from 0.55 to 3.23 meters, while the diagonal changes from 0.43 to 2.54 meters, the optical magnification is 1.2x. Supported image formats are 16:10, 4:3, 16:9. Has vertical keystone correction within ±40°. Supports front and rear projection.

The projector has the following connectors: VGA, HDMI, audio input 3.5 mm (mini-Jack), USB (type A). The built-in original player allows you to output from a flash drive, built-in memory (1.5 GB), MicroSD memory card: images, video files, Microsoft Office files and Adobe PDF files. The projector supports the MHL (Mobile High definition LinkEasily) mobile interface - presentations, videos, games, on the big screen from your mobile device.
The projector has a built-in speaker with a power of 1 W (mono), a remote control. The weight of the projector is 380 grams with dimensions of 39x105x106 mm. The projector comes at a price from 31300 rubles.

4th place: Viewsonic PLED-W800

The projector comes at a price from 37000 rubles. It has a DLP matrix with resolution 1280×800 pixels (WXGA) and 120000:1 contrast ratio. The luminous flux is 800 lumens. The projection distance is from 0.72 to 3.02 meters, while the diagonal varies from 0.6 to 2.54 meters. Supported image formats are 16:10, 4:3, 16:9. Has vertical keystone correction within ±40°. Supports front and rear projection.

The projector is equipped with interfaces: VGA, HDMI, composite, audio RCA, audio mini jack, USB (type A), SD memory card reader. The projector has remote control bullets and speakers with a power of 2 * 2W. The weight of the projector is 830 grams with dimensions of 52x175x138 mm, which puts it in the class of portable devices.

3rd place: Vivitek Qumi Q8

This portable projector has a matrix with a resolution fullHD - 1920 × 1080 pixels and a contrast ratio of 30,000: 1. The luminous flux is 1000 lumens. The projection distance is from 1.33 to 4 meters, while the diagonal varies from 1 to 3 meters. The projector supports the following aspect ratios - 4:3, 16:9. There is an automatic vertical (±30°) and horizontal (±10°) keystone correction. Front and rear projections are supported.

Qumi Q8 is equipped with two HDMI ports, USB (host), 3.5 mm output (mini-Jack), as well as an MHL port for broadcasting digital content from smartphones and tablets, and has the function of mirroring mobile devices. Wi-Fi module allows you to transmit uncompressed Full HD signal. The image can be displayed on the screen from the built-in memory of the projector itself or from a USB flash drive without connecting an external source. The projector has a remote control and a 2W (mono) speaker. The weight of the projector is 620 grams with dimensions of 43x190x114 mm. Projector price starts from 57100 rubles. And it is suitable for organizing a home theater, displaying presentations in a darkened room.

2nd place: LG PW1000 and LG PW1500

This projector represents a range of portable projectors LG Minibeam: PH550, PW1000, PW1500. The difference between these projectors primarily lies in the different luminous flux. For the PH550 model, it will be 550 lumens at a price of 38,990 rubles, for PW1000 - 1000 lumens at a price of 40,750 rubles and for PW1500 - 1,500 lumens at a price of 47,500 rubles.

All these projectors support image output via Wi-Fi - Screen Share screen display function. Audio output is possible via Bluetooth, at the same time, the projector has a claimed battery life of up to 2.5 hours (for the youngest model, autonomy will fall with an increase in the power of the light flux).

The projectors have a DLP matrix with a resolution of 1280×800 pixels (WXGA) and a contrast ratio of 15000:1. The supported aspect ratio is 4:3 with diagonal sizes from 0.63 to 2.54 meters. The projectors support front and rear projections and have manual keystone correction. The projectors have the following connectors: VGA, HDMI, USB (host), composite, 3.5 mm output (mini-Jack) and equipped with built-in stereo speakers 2 * 3 W. They have MHL support, remote control and COM port (RS-232) - control the projector from a PC. The weight of the projectors is 1.15 kg with dimensions of 53x231x163 mm.

1st place: Casio XJ-F100W

This projector is a series of projectors from Casio XJ with different brightness, resolution and price. The XJ-F100W projector has a laser-LED light source with a luminous flux of 3500 lumens. This was immediately reflected in the weight of the device - 3.8 kg with dimensions of 97x299x299 mm. But such a powerful light output will help to use the projector to display presentations in good light. At the same time, for easy brightness control, the Light Control function is provided - you just need to press two keys on the remote control or projector.

The projector is equipped DLP matrix with a resolution of 1280 × 800 pixels (WXGA) and a contrast ratio of 20000:1. The projection distance is from 0.92 to 12.54 meters, while the diagonal varies from 0.82 to 7.62 meters. There is an optical (1.5x) and digital (2x) zoom. The projector supports the following aspect ratios - 16:10, 4:3, 16:9. There is an automatic vertical (±30°) and horizontal (±30°) keystone correction. The projector supports front and rear projection.

The projector has a huge number of connectors: VGA, two HDMI ports, USB (host), S-Video, composite, component, RCA (audio), audio input and output 3.5 mm (mini-Jack). For remote control, there is a remote control and a COM port (RS-232). There is a speaker with a power of 16 W (mono). The projector comes at a price of 68,250 rubles.

This projector is a versatile device. It will be able to provide you with high quality pictures and in good lighting - presentations, and at the same time you can easily organize a home theater in your home.

LEDs (LED, Light Emitted Diode) are actively penetrating into our lives. Consuming relatively little power and with a long lifespan, step by step they are replacing traditional incandescent lamps in household lighting, eloquently assert themselves as a great alternative to fluorescent backlighting in LCDs, and are finally ready to lead the revolution in the country. video projectors. About LED-video projectors, their features and the current state of affairs on the market, and will be discussed in this material.

Disadvantages of Traditional Projectors

Modern video projectors, with all their positive qualities, also have the following disadvantages:
1) the projection lamp has a limited service life, high cost and significant power consumption;
2) the projection lamp gets very hot during operation - each projector needs a special cooling system, which not only consumes additional energy, but also makes a noticeable noise (due to the rotation of the fan);
3) the presence of a projection lamp and a cooling system imposes certain restrictions on the size and weight of the projector.

LEDs to the rescue

LEDs “began their careers” as household lighting devices, then they found application in the automotive industry, then LEDs began to be used to illuminate LCD matrices in the corresponding video panels, and finally they got to video projectors. The idea of ​​replacing a traditional incandescent projection lamp with an LED analogue is, at first glance, simple and obvious. However, the creators of the first LED projectors had to solve a number of fundamental technical problems. Firstly, choose the most appropriate method of image formation for LED specifics. The use of LED together with LCD-matrices (which are equipped with most of the projectors sold in the world) turned out to be unpromising. After all, working on LCD-matrices in the light implies a significant (up to 60%) weakening of the light flux on the way from its source to the lens. Therefore, DMD micromirror chips used in DLP projectors are most suitable for symbiosis with LEDs. It is no coincidence that Texas Instrument (which is the founder of DLP technology) was one of the first to propose using their matrices in conjunction with LED backlighting.

However, at present there is a concept of using LED together with LCoS matrices (they also work on the principle of light reflection) - it is quite possible that LEDs will cause a "renaissance" of this technology.

It is worth emphasizing that LED projectors owe their appearance to significant progress in the technology for the production of bright LEDs. Lumileds is currently the leader in this field and the main LED supplier for the projection industry. Today, its specialists are intensively working on the creation of even more advanced LEDs, the characteristics of which (brightness, energy efficiency) are getting better with each new generation.

The principle of operation of the LED projector

So, in an LED projector, instead of a "hot" and energy-consuming incandescent lamp, LED light emitters are used. There are either three of them (red, blue and green), or more (in addition to the primary colors, Lumileds suggested adding blue and yellow in order to increase the luminous flux and enrich the color rendering). And LED projectors do not have a light wheel (which is traditionally used in DLP devices). Instead, a special electrical circuit is responsible for the formation of each color layer of the image, which switches the backlight color channels with a certain (invisible to the eye) frequency. Due to the inertia of visual perception, we see a complete picture on the screen.

LED projectors: a lot of advantages

1) Dimensions and weight
The LED + DLP image formation method allows you to place all electronic elements as close as possible to each other and create miniature (with a CD box) and subminiature (with mobile phone) projectors.

2) Energy consumption
LEDs consume 10 times less energy (LED - about 10 W, lamp - about 100 W). This means that LED projectors can be powered by rechargeable batteries.

3) Service life
The life of a conventional projection lamp is on average 2-3 thousand hours. For LED solutions, this figure is about 20 thousand hours without a drop in brightness. There has been a tendency to increase the above-mentioned resource up to 100 thousand hours.

V modern world projectors have become popular and better than they once were. The history of projectors begins with the French inventor E. Reynaud, who created it in 1892. Then he called this miracle “Optical Theatre”. But we won’t delve too deeply into history, it’s a long time. Instead, let's talk about how they work, how much they cost, for what purposes they can be used in Everyday life, etc. Let's focus on the projectors that are available to ordinary people, that is, the average person who does not have to understand projectors because of work, and in the end we will summarize which projectors are best for whom.

Introduction

Projector is an optical device designed to create a real image on a large screen. Simply put, it produces any image from any digital media on any flat plane. It is desirable, of course, that this flat surface be of a light color.

If you still don't understand, then let's remember academic years. There were certainly classes and events that used the projector. This was done in order to convey information to students as best as possible.

And you remember the retractable white canvas, which was mounted under the ceiling, and on which the image from the device was projected. This device is a projector. As a rule, it is fixed in front of a white canvas, that is, a projection screen. Okay, if you didn’t sit in class at all, then you definitely went to the movies. It's the same principle, but on a larger scale.

Types and principle of operation

Having understood what a projector is, we will consider the main types and principle of operation of projectors.

Let's clarify one detail. We are talking about multimedia projectors, or, to be more precise, about digital projectors.

Types of digital projectors

  1. LCD projector
  2. DLP projector
  3. LCOS projector
  4. LED projector
  5. pico projector

Let's analyze in more detail how projectors work.

In our case, we will talk about two types of projectors: DLP and LCD. Why only about them? Because only these types of technologies are used in Chinese projectors the most. We will not delve too deeply, since the topic is extensive and for a separate article. Instead, let's start talking about DLP projectors.

DLP projectors

The core element of a DLP projector is a microelectromechanical system (MEMS) that creates an image with microscopic mirrors arranged in a matrix on a semiconductor chip called a Digital Micromirror Device (DMD). Each such mirror represents one pixel in the projected image.

Thus, each mirror either reflects the light of the lamp onto the screen, or onto the light absorber (radiator) of the projector, giving a white or black dot on the screen.

Full HD DMD chip contains 1920 * 1080 = 2,073,600 micromirrors.

As mentioned earlier, a single-matrix projector displays only one color component of the image at a time:

To isolate individual colors from the white light of a lamp, a rotating wheel with color filters (“color wheel”) is used:

The color wheel can have different rotation speeds. It can consist of filter segments of different colors.

3LCD-Projectors (liquid crystal projectors)

The name tells us that 3LCD projectors use three liquid crystal matrices that simultaneously work with red, green and blue light streams, displaying an “honest” color image on the screen.

The scheme of operation of a 3LCD projector is shown in this picture:

In 3LCD projectors, a lamp is used as a light source, the light of which is initially divided by special filters into three components. But the heart of the projector is the three matrices adjacent to the prism, in which the three streams of light are combined again, in other words, the three color components of the image are combined into the final color, which is displayed on the screen.

White color is also formed by mixing red, green and blue, which eliminates the imbalance in brightness between the black and white and color components of the image.

And consider another type of liquid crystal projectors

1LCD or TFT projectors.

Translucent type TFT projectors use a small-sized TFT color active matrix LCD as a modulator. The principle of operation of a translucent type TFT multimedia projector in the picture:

The main element of the installation is a miniature LCD matrix, made using TFT technology, like the LCD screen of a flat panel color monitor. Uniform illumination of the surface of the LCD matrix is ​​achieved through the use of a lens system called a condenser.

Which projector to choose and where?

Having understood general outline, you can go directly to the story about Chinese LED projectors. Keyword- LED. That is, LEDs will be used as a light source, and not projection lamps. The advantage of such projectors is that LEDs last longer and are cheaper to replace than lamps that cost half the projector or even more. On the this moment all Chinese projectors are LED, not simple lamps.

The reader is now thinking why the topic is dedicated specifically to Chinese projectors. It's simple - a crisis. And in this difficult time, I want to save money and get a decent product for a reasonable price. Therefore, there are only two options: either buy a used product, or a Chinese one. V Lately many have made sure that the word “Chinese” is not a sentence. Why overpay for a brand or features you don't need when you can buy a Chinese projector for reasonable money and use it for your own pleasure? It makes no sense to overpay, therefore, if the projector, then only Chinese.

But before buying, you need to carefully go through three important criteria. This:

1. Your budget:

  • 50-150 $ 1LCD 800x 480 (matrix resolution)
  • 150-300$ 1LCD 1280x800
  • $300-600 DLP 1280x800

2. Purpose of the projector:

  • Movies
  • Movies\PS1\Dendi\Sega etc
  • Movies\Monitor\Games\Presentation

3. Projector class:

  • 1LCD - cheap and cheerful
  • DLP - expensive and with natural colors

After you have gone through the criteria, you can go directly to the selection of the projector.

The w3bsit3-dns.com forum will help us with this. There is a big topic dedicated to Chinese projectors. Since I myself am the owner of not one, but two projectors at once, and I am a person who went through all this for you, I will briefly tell you what is written there, I will draw your attention to the nuances.

Let's start by dividing you into a couple of classes. It will be easier.

  1. People who before that had no idea what a projector is and did not see it live.
  2. People who have come across projectors have used them, but not Chinese ones.

In addition to the main classes, we will also divide you into subclasses:

1A - budget up to 1.8 million

1B - budget up to 3.7 million

1B - budget up to 6 million

1G - over 6 million budget

The second class will be different from the first - they already had a projector. So the subclasses would be like this:

2A -

2B - those for whom savings are important (and technical characteristics are not so important).

2B -

2G - those who choose to classify themselves as first class.

Of course, it was possible to divide you by functions, that is, into those who need a projector just for movies, for work, games, but did not, because “price and quality” is more important.

So, for each class and subclass there are projectors with their own technology.

For everything first class except 1G - the projector technology type will be 1LCD. This technology is not used by branded companies. Not used because there are more modern ones. Therefore, these projectors should not be compared with branded ones and expect a miracle for little money.

But the fact that this technology is not used by leading brands does not make it bad or unclaimed. Fortunately, the cunning Chinese understood this and began to rivet projectors using this technology. It is good.

But let's go over the disadvantages.

First: all projectors based on this technology are made of plastic due to their simplicity and cheapness, therefore, you should not expect premium. Although there is a taste and color.

Second: you will have to buy these projectors only in online stores, preferably in Chinese ones, having figured out everything yourself. Intermediaries, of course, raise the initial price, but we do not need this. Yes, I mean that you have to spend time to choose a normal Chinese online store, and there are not many of them.

Third: build quality, the presence of marriage, flaws - this is what you have to put up with when buying a cheap product, and not only from China. That is, it is not always lucky. But wait, the build quality often matches the price. Having a marriage? But it can also be with expensive brands. Flaws? Google to the rescue!

Fourth: presence of dust and pollution. Yes, I have experienced this myself. What does dust mean? Projectors have a cooling system, like on laptops or desktop computers. The air flow system was adjusted, but they forgot about the filters. Because of this, all the dust that is drawn in by the cooler to cool the matrix and the lamp gets inside the case and settles on all the optics and on the same TFT matrix. It's not very pleasant. But this can be solved with straight hands.

Fifth: it's noise. I'm talking about the same cooling system, it makes a lot of noise, more precisely, the fan itself makes noise. Noise is different for all projectors. On average, it's about 45 decibels. But by ear it looks like the noise of a stationary computer that is loaded with work. It only helps to calm down and get used to it.

Sixth: they get warm. The matrix and the LED-lamp are heated, and the power supply itself during prolonged operation. But this is also not the case with all projectors. The leaders of this price category do not have such problems.

Seventh: cumbersome and not always beautiful design. Not all, but most projectors in this category have this drawback. This is due to the fact that some of them have more powerful ice lamps and, therefore, they need a more powerful cooling system.

All these shortcomings are fickle and strictly individual. Definitely worth buying these projectors. And now let's move on to a more extensive analysis of the first class. I will recommend the best options.

For 1A:

Unic uc 40+

Both projectors are based on 1LCD and have a matrix resolution of 800x480.

Support Full HD video output. The brightness of both is about 80 lumens - enough for watching movies, but not enough for other needs.

Of the minuses - “soap” (fuzziness) in the corners of the picture. Due to the fact that the image cannot be focused due to a poor-quality mirror. Solution: replace the plastic mirror with a glass one.

GM60 has support for the ACC3 audio codec, which allows you to watch any downloaded movie without conversion. Although, if you watch via HDMI, then you don’t need a codec.

The maximum acceptable image size that can be obtained on such projectors is no more than 70 inches, that is, a width of 154 cm and a height of 84 cm. Unic is cheaper.

For 1 B:

Excelvan CL720 1280 x 800

Unic uc 50 854x480

The price of the first is up to 3.8 million rubles (380 rubles). The price of the second is from 2.5 to 3 million (250-300 rubles).

Unic uc 50 powered by DLP technology, making it one of the most compact projectors in its category. And the only projector working on this technology for such money.

The downside is that it has the same matrix resolution and brightness as subclass 1A projectors, but the price is higher. Due to the fact that it is portable and has small dimensions. Weight - 0.13 kg. The operating time from the network is one and a half hours. Looking for an inexpensive portable projector? This is your option. There will be no problems with “soap” and dust.

Excelvan CL720. One of the best among 1LCD projectors. It has a matrix resolution of 1280 x 800, that is, HD. Brightness in 400-500 lumens. But impressive dimensions: (L x W x H): 32.0 x 25.5 x 11.5 cm / 12.6 x 10.0 x 4.5 inches. Weight 3.3 kilograms.

No problem with soap. The picture is clear all around. There is a problem with dust, but you can solve it by putting the filter on the grates. The size of an acceptable picture can be obtained up to 120 inches - a width of 265 cm and a height of 149 cm. A huge image on the floor of the wall or even on the entire wall.

For 1B

Led86\86+\96\96+\BT96 1LCD\1280x800

Atco ct03h2 1LCD\1280x800

I remind you that the budget of the subclass is up to 6 million rubles (600 rubles). More expensive because they have Wi-Fi and built-in Android. And so, the characteristics are identical to the CL720. If you have an amount of up to 6 million (600 rubles), then it is better to save up and purchase a projector for DLP technologies, which are for the second class.

Let's move on to the second class. But let's remember.

2A - those who do not want to overpay, but also do not want to have a picture worse than the one that was.

2B - those for whom economy is important and technical characteristics are not so important.

2B - experimenters - those who are interested in knowing what Chinese projectors are.

2G - those who choose to classify themselves as first class.

For 2V you can try Unic uc 40. Fortunately, it can now be ordered for less money.

2G read what is already written above for the first class.

well and for 2A at the moment there is a fairly large selection, but I will write about the most bought and the best.

Let's clarify one detail right away. All projectors for your subclass are HD resolution and DLP powered. I will give you detailed specifications, since you have already encountered the projector. And this data will tell you something.

Light source Texas Instruments DLP (0.45" DMD+RGBLED). Lifetime of OSRAM LED light source - 30,000 hours. OS Android 4.3. Cortex A9 1.5G / GPU Mali 450 MP4 / RAM 2GB DDR3 / 16GB eMMC. Brightness 1500 lumens (450 ANSI lumens) Contrast ratio 5000:1 Keystone correction +/- 40 degrees (vertical only) Compatible with 4K (@ 30fps) Supported video signals NTSC, PAL Resolution support 720p, 1080p, SXGA, WXGA , 4K Supported computer signals: XGA, SVGA, VGA, SXGA, WXGA Lens material - glass Dustproof Resolution 1280x800 Electronic zoom and focus Interface localization languages ​​- Chinese, English, in international - Russian Characteristics of AC100-power adapter 240V~ 50/60 Hz 1A (consumption 60W) Weight - 1.55 kg Support for full 3D Average price from 10 million to 12 million (1000 - 1200 rubles).

A dubious device for the price turned out. But very good quality and beautiful.

Xgimi Z3+

You get almost the same characteristics as the previous one, but cheaper. The average price is up to 9 million rubles (900 rubles). This is one of the best options among Chinese projectors.

Excelvan LED9

LCD display. Maximum resolution: 1280 * 800. There is an auto-correction. Auto correction, autofocus. Suitable for home theater. On board Android 4.2. Support 3D, WIFI.

This is a budget version of the previous two projectors. And at the moment, the most purchased Chinese projector in the DLP class because of its price. From 6 million to 8 million. Great for such a projector.

What's the bottom line? We have 3 projectors for different prices. As you can see, the price-quality ratio is well balanced.

Where can I buy?

As I said, you cannot buy these projectors in physical electronics stores. Only order from the online store directly from the Chinese. And for this there are such giants as Aliexpres, Everbuying, TinyDeal, JD and many others.

How to make purchases? Everything is simple really. Here are the stages of the purchase:

However, before you buy, do not forget about cashback services that will save you money. And do not believe what is written on the product pictures in Chinese online stores. This rule must always be remembered.

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