Many families love to gather to jointly watch their favorite film. To make this process the most comfortable and cinemas for home are invented.
Content
And if there is a cinema, then there must be a projector. In this review, we will talk about how to choose a suitable projector.
First of all, pay attention to the crew of the model you have chosen.
The most famous manufacturers manufacturers
- Samsung.
- Nec.
- Toshiba.
- LG.
- Hitachi.
Projectors prices
The cost of the projector for the cinema ranges in a fairly wide range (from a couple of hundred to several thousand dollars per unit of goods). What determines such a tangible spread of price offers?
The main criteria for the formation of price projector
Lamp parameters
Comparing the proposed models and wondering which projector is better to choose, follow how the lamp fades away. You need to give preference to the one that goes softly, it will last longer than that lamp that goes out sharply. Remember also that warranty obligations regarding the life of the lamp must be recorded separately, because It is considered to be consumables.
Next, study the following parameters:
The average service life
This value for ordinary models is 4-5 thousand hours. However, after 1-2 thousand hours of use, the brightness of the lamp becomes less intense.
Light flow and its range
Light flow - indicates the amount of light energy distributed by the source of light in all directions. The range of light flow is the distance to which this energy is transported. Normal parameter-10-12 m.
Brightness
For a comfortable perception of the image in daylight in a bright room, give preference to a projector with a brightness of 2500 lumens, in a less lit room - from 1000 lumens, in a dark viewing hall - from 750 lumens. It is important to know that the brightness of the light flow in the central area of \u200b\u200bthe image is higher than in its extreme areas.
Contrast
This value shows the ratio of illumination of the lightest points of the picture to the lights of the darkest. In the technical passport it looks like this: 1500: 1 or 3000: 1. But, in fairness, it must be said that this characteristic does not speak a little about the ordinary buyer.
The uniformity of the light flow
The standard value for the home projector is more than 85%.
The resolution of the image
This characteristic characteristic, excellent for different types of projectors.
- Full HD (1920x1080). These are the most expensive projectors, providing, at the same time, the highest image quality. The ratio of the parties for such resolution parameters 16: 9.
- SVGA (800 × 600) Format 4: 3. Not such an expensive option.
- XGA (1024 × 768), costs approximately the same as the ratio of the parties is the same - 4: 3.
Manufacturing technologies
DLP
In this projector, ideal for the house, the creation of the picture occurs as follows: the light beam passes through the spinning six-color light wheel, is reflected from the moving mirrors of the DMD chip, and reaches the lenses of the lens. Such a technology, most popular when creating projectors for home cinemas, ensuring the reproduction of the image of a clear and contrasting, excellent quality. Speaking about the disadvantages of DLP technology, it should be noted the “rainbow effect”-a specific visual effect that some people notice. Although, most people, after some time, cease to feel this effect. Such a problem is solved by replacing a six-color light wheel with eight and twelve-color. True, this decision is accompanied by a significant increase in the price of the goods.
LCD
The basis of this technology is a railway meticar, which passes through itself a luminous flux emanating from the lamp. Reaching the surface of the matrix, the rays of the luminous flux are reflected from the micro-mirror. Relaxing, they enter the lens, and then on the screen. The “minus” of this technology can be called Screen Door Effect - the presence of a distance between the particles of the matrix, which, with low resolution, creates a stepped picture. It is in this that LCD projectors are inferior to DLP-relatives. Although LCD is a row, with samples of $ 2500, equipped with three railways, and not one, and can guarantee a broadcast of a rich, bright and clear video.
CRT
CRT (from the English Cathode Ray Tube-electron beam tube). This technology is based on the presence of three kinescopes, projecting each ray of different colors (green, red and blue). The imposition of these rays gives a full -color picture, and the combination of these light flows is so problematic that these devices are now almost not used.
The scheme of the CRT projector
LCOS
LCOS (English Liquid Crystal on Silicon - liquid crystals in silicon). This technology takes third place in the segment occupied by the market after LCD and DLP. The basic parts of such a projector are: a display with a three -chip circuit made using LCOS technology, a mercury lamp and a polarization filter. In this technology, reflective matrices are used, and not educational, as in LCD technologies. Projectors performed using this technology boast of a reduced effect, the lack of flicker and rainbow effect. LCOS chips withstand more severe radiation than DLP and LCD analogues, because they are equipped with a cooling substrate. That is why LCOS technology is so popular in the manufacture of powerful installation translators. Products based on this technology are not massive, but firmly occupied their niche in the highest level of quality. These projectors are very popular in a professional environment (digital film projectors for large cinemas, as well as projectors used to visualize the effects of aviation simulators). Dreamvision, Sony, CrystalView, JVC, LG, Canon, Barco-these are the most famous companies that produce LCOS projectors today.
Laser
Laser projectors are used to design entertainment show programs and discos by creating graphic effects. Such products will be found in restaurants, clubs and entertainment centers.
Picoprojectors
These are pocket projectors, the size, no more than a mobile phone, or a micro-projector built into the gadget. Modern picoprojectors allow you to create a projection with a diagonal size of up to 120 inches. Their brightness reaches up to 300 lumens. Included with mini-projectors made in the form of individual devices, a standard tripod, built-in card-reader or flash drive is often provided. For energy -saving purposes, LEDs are used in picoprojectors.
The presence of additional options
- Shift Lens. This option makes it possible to move the picture, depending on the placement of the projector in the hall.
- DVD-drive.
- USB ports, etc.
Here it is necessary to soberly evaluate a specific case, and honestly answer for yourself the question: “Do I need this function, in general? Or can I calmly do without her? " After all, the presence of additional options means unforeseen costs. So why spend money on what you, at all, are not required?
Noise level
The noise level of 30-35 dB is considered acceptable. Exceeding this value causes a feeling of discomfort.
Fasteners
In any configuration, there is a ceiling mount, as well as a height-adjustable stand-knife. The holder for ceiling mount will have to be bought separately, because its presence in the kit is not provided.
A source of continuous nutrition
This device was created in order to protect the projector lamp from voltage fluctuations in the network and sharp shutdowns. Otherwise, it can burn out. This device, too, most likely will have to be purchased separately.
Short -focus projectors
This solution is a direct answer to such a popular question: "What projector should you choose for a small room?"
Projectors of such a plan are suitable for demonstration halls with limited space, are used to create a large picture at a small distance from the projector to the screen.
Projectors-3D Vision
At the moment, 3D vision projectors are no longer luxury items (about $ 1000). To create a homework cinema, the computer must be equipped with a specific video card. You can’t do without special stereochka (more + $ 200). The only drawback is that for mass views it is necessary to stock up on stereo for all spectators, which pours out "into a penny".
