All About 3D Projectors

Nowadays, cinemas are not as popular as they were 30 years ago. But if you want to get into it, but you do not have the time or the opportunity, then it itself can come to you. Projectors can be used at home instead of a TV, in education for teaching, when giving lectures or presentations.

The first projectors entered our life a long time ago. Until now, they have been very modified and improved, they provide a completely different image, different from the way we remember it. The 3D projector itself is a special optical device that creates a natural image of a flat medium-sized object, but on a large screen.... The advent of such devices provoked the emergence of cinema, and now they are classified as a productive art.

Today, 3D projectors are new universal devices with a simple form.... Their meaning is to convey a three-dimensional image from different angles. Since our eyes individually see a different image, and thanks to the visual analyzer, it is formed into one volumetric image, then 3D video does the same with the resulting image. A system that reproduces a three-dimensional image receives it from different angles.

Of course, these types of projectors are very different in their functionality and picking... They are divided according to their purpose, can be for home cinema, for games and for cinemas, as well as for education and business. These types of projectors are called wide-format, they have different resolution, that is, the fraction of the created image, which depends on the number of liquid crystals and micromirrors.

Respectively, they differ in their weight and parameters. They can be stationary with large dimensions and weighing from 18 to 40 kg, very small and similar to a mobile phone, as well as medium sizes that can be carried by hand.

Among the manufacturers who are engaged in the production and sale of this type of projectors, one can single out the company Xiaomi... It is quite young, founded in 2010. Its creator was Lei Jun and several of his trusted partners. The main activity of the company is the production of smartphones.

But besides this, it is also being implemented in various directions, for example, in the production of projectors. Movie projector Xiaomi MiJia Laser Projection TV Is a versatile device that can be used both at home and for teaching students. It weighs 7 kg and has the following dimensions: height 88 mm, width 410 mm, and depth 291 mm.

The device is equipped with manual focusing. Has Android operating system and DPL matrix. Equipped with a Laser-LED discharge lamp with a lifespan of 25,000 hours with a brightness of 5,000 lumens. The static contrast ratio is 3: 1 with HDR support, the resolution is 1920 x 1080 pixels, it supports 16: 9 and 4: 3 image formats, and supports Bluetooth and Wi-Fi.

The RAM is 2000 MB, and the built-in memory is 16 GB. There are 4 speakers with composite video connectors. The device is quite quiet, the noise level is 32 dB, and the power consumption is 250 W. The model is made in a stylish design, using a combination of black and white colors. Equipped with a control panel.

Another manufacturer of this product is the company Epson... It is a world famous Japanese brand, whose history began in 1942. At that time, he specialized in the production of watch movements. Then the main professional activity of the company was the development of printers. Since 1968, large-scale production of revolutionary devices for home and office printing began - these were different printers of inkjet and laser technologies. In 1989, the company introduced the world's first LCD projector. For 20 years, the company has continued to manufacture and improve projectors with 3D technology, while achieving natural color and excellent image brightness.

Today the company is so large that it has 106 representative offices and branches of companies in different countries, where more than 70,000 employees work. Epson has made a great contribution to the development and protection of the environment in the places where its offices are located.

Epson EH-TW5650... This model of a video projector is intended for home use, is equipped with direct and reverse protection, can be installed both on the floor and on the wall. It weighs quite a bit - 3.4 kg. Made of white plastic with a glossy surface. On the front side there is a lens, which has a mechanically controlled shutter, as well as a front receiver that receives signals from the control panel.

The device is equipped with a UHE lamp, due to which the luminous flux is created by electrodes inside the bulb due to an electric discharge. Its service life is 4500 hours in operating mode, and 7500 hours in economy mode. The lamp power is 200 W, and the brightness is 2500 lumens, the dynamic contrast ratio is 60,000: 1. Provides a gorgeous color reproduction of 1 billion colors. The horizontal scan frequency is 15-80 kHz, and the real resolution is 1920 by 1080 pixels. Supports picture formats 16: 9, 16: 10, 4: 3. The maximum projection distance at which the projector can be used is 3.82m and the image diagonal is 0.76-7.62m... Focusing and zooming are done manually. The projector can be used in the “mirroring” mode.

There are built-in Bluetooth and Wi-Fi modules. One speaker provides 10W audio power. There are VGA video connectors and 2 HDMI inputs. The noise level in the economy mode is 27 dB, and in the operating mode - 37 dB. During operation, the device consumes 296 watts, and in power saving mode - 227 watts. The chic white model has small dimensions: height 122 mm, width 309 mm and depth 285 mm. Designed for watching movies at home, will perfectly fit into the interior of any room.

Additional accessories are required to use any projector model. The main accessories are a portable or fixed screen, a small table or a special stand for this installation, respectively, the necessary cables and extension cords of the required size... First, you need to put the projector in front of the screen so that it does not end up on the same horizontal line with the person who is speaking at the same time (this is in the case of a presentation), so that the beam of light does not shine in his face, and the speaker does not cover the picture on the screen.

How do you turn on the projector? First of all, you need to connect it to the electrical network and hold it for a few seconds. After the screen of the device heats up, a solid color will appear with the designation of the entrance in the left or right corner. If nothing is visible, check to see if you removed the lens cap. All inputs and their location on the case in each model are individual, so they must be connected according to the instructions.

Different models have different functional characteristics, but to set up a good image, we will use basic and especially important ones. These are adjusting the size of the picture or image, changing the tilt, focusing, and correcting horizontal and perpendicular trapezoids.

Regarding customization scaling, then it is usually located near the lens of the video projector. If this setting is not enough, you can move the projector back to enlarge the image, or, conversely, move it forward to lower the projection parameters. Then you can adjust the image by zooming or focusing. You can use the focus ring to adjust the focus. Twist it to one side and the other to achieve the clearest picture. Pay attention at this time to the condition and appearance of the text on the screen. It must have a clear image. This focusing should be done after each change of the device location.

To adjust tilt angle, you can raise or lower the front side of the device, if this is not enough, then you can put something to increase the tilt. Adjusting the horizontal keystone errors is necessary when the angle of the projector is large or low. At the same time, the picture frame on the screen expands up or down.... Changing the perpendicular keystone distortion balances the lack of centering of the projector image... The location of these settings can be in the cinema setup menu or on the front panel as buttons.

After using the projector, be sure to turn it off properly.... After finishing viewing, you need to wait a few minutes until it cools down. Only then disconnect from the network. Then close the movable lens cap or screw the removable lens cap onto it.

In the next video, you will find a very detailed overview of the Xiaomi Laser Projection TV projector.