Useful information about the types of projectors

Today, projectors have found great use in everyday life, in office and educational institutions. In some cases, this technique is needed to watch movies, in others - with its help, appropriate explanations are given or bright presentations are made. All this unites one thing - a bright, sharp and clear big picture (much more than on a TV). Before buying, you should know what types of projectors are - this will help to make the right purchase.

Device classification

The range on the market is wide: there are both old and new models. Their functionality differs enviable variety. Projectors can be classified according to the following species characteristics:

• on the possibilities of use;
• by technology;
• on features of portability;
• by application;
• by permission;
• Additional features.

By opportunities

The possibilities of using the equipment are divided into the following types of projectors:

• overhead projectors;
• episcopes;
• codoscopes;
• multimedia options.

The following types of projects have found wide application in modern society.

1. Slide options (or slide projectors). These models we all know from childhood are still available today. Continuing popularity is supported by the relative cheapness of devices. In addition, slides are still used for presentations (both for educational purposes and for nostalgic moments). Significant bonus - for such a demonstration will not need a computer device. Modern developers even offer remote-controlled options, as well as those that can be programmed.
   
2. To display opaque objects (which means pages from books, magazines and photographs, as well as three-dimensional objects), it is best to use episcopes. They are simpler compared to the previous version: they do not have to be prepared for work, and the demonstration material can immediately serve as a page of a notebook, books, letters, and so on.Modern models have greater portability and light power than old models.
   

3. Transparent special films store a lot of information - from the household to the scientific level. You can view them using Codoscopes (in another name: overhead projectors). Drawing the image on a film is possible by means of a felt-tip pen, the printer or the copier. What does this give? First, it will make the presentation more lively and interesting, and also help to visualize a new idea. Such projectors work fine with computer and video.
   

4. Multimedia projectors able to project an image on the big screen. In contrast to the already considered predecessors, they give a brighter picture, and long-focus options can work in large rooms.

Multimedia technology has received the most widespread, so the further narration will relate to this type of device.

According to the technology used

Types of projectors can be divided according to the technology used in the device.

1. LCD devices They have three LCD matrices with blue, green and red. The powerful light stream going from a lamp shines through them.This contributes to the formation of the picture that is sent to the screen.
   

   Typically, projectors of this type are light in design, easy to manage. Users mark their realistic picture - it is clear, saturated and stable. Not without flaws: sometimes the effect of "wire mesh".

2. Have DLP models image forms a matrix. There are several mirrors: each of them easily rotates under the action of a certain signal - this creates a certain image of the image.
   

   What are such options good for? They have high image contrast and deep detail even in shadows. These devices are more durable and reliable than those already mentioned, but also more expensive.

3. LCoS devices - This is a relatively new word in projector technology. They are a kind of hybrid of the previous two. The picture in them is endowed with high definition and has no “grid” effect.
   

4. There are also CRT options - they have a higher image quality and a long service life. But among the shortcomings - a large mass, a relatively weak stream of light. This technique is difficult to install, and it is very expensive in cost.
   

In size

In some cases, the portability of the device is very important, so you should know which projectors are depending on their size. Here you can highlight:

• pocket options;
• ultra portable;
• portable;
• stationary.

Each is worth to tell more.

The pocket model is necessary for those users who spend a lot of time on the move. Very convenient in the case of unplanned performances. Additional mobility handicap gives a little weight (only 300 g). However, there are also disadvantages - a restriction in the functional.

There are and ultra portable devices. They are also good to use, for example, in retreats and trainings. But we must understand that a low weight will give a low coefficient of opportunities and options. And the picture may not be the best quality.

Use for portable presentations and simply portable projectors. Just as they, along with compactness, have high quality indicators and a large range of functional features.

Finally, stationary devices set in a strictly designated place. They have a variety of interfaceshigh parameters and great features of “intellectual” stuffing. Among them - a large luminous flux, a range of interchangeable optics and high cost of equipment.

To understand what kind of device you need to buy, it is proposed to compare the following parameters:

• features of the device and its basic characteristics;
• scope of application;
• estimated amount of use for a certain period;
• other important features.

By scope

Before buying, you need to have an accurate idea of ​​exactly where the projector will be used. Popular areas include:

• office;
• house;
• entertainment venues.

Under "office "model This includes those projectors that are used in school or other educational institutions. The main feature is that their 4: 3 format provides advantages in the presentation of presentations. Here the main focus is on the power of the luminous flux.

Portable models are perfect for business purposes - it will be better that they can be moved from one room to another.. The main requirement here will be the interaction with all kinds of media, simplicity and brightness settings.

Models for education it is better to use multimedia.They can not only connect to a variety of media, but also have a convenient built-in speaker. BUT "homemade options - this is definitely a technique with great contrast and the ability to create a realistic image. This allows you to create an "immersive effect." The magnitude of the light flux is of secondary importance. Much more important here is moderate brightness and contrast.

It turns out that there are projectors that are designed specifically for bars, clubs and discos. For such important the importance of long-term continuous operation and protection from air pollution.

By permission

Before purchasing, you should pay attention to the actual resolution of the equipment. This feature is responsible for the number of pixels that goes in both directions - vertical and horizontal. Accordingly, the higher the score, the better in quality the picture will be displayed. But again, you need to know the purpose of using the projector.

1. In the case of watching DVD movies, the resolution will be 852x480.
2. More advanced video file carriers raise the bar for resolution to 1280x720.
3. Presentations require numbers in 852x480 and the use of more advanced models.

It is important to take into account another criterion - the screen on which information will be played. Here its size, material and texture are important - all this will affect the picture.

additional characteristics

Such capabilities in any kind of projector include:

• the possibility of using interchangeable lenses;
• digital and optical picture adjustment;
• the presence of a built-in audio system;
• mounting options.

I would like to say in support of the importance of the last point - from locations of equipment will depend on the quality of the material shown. In case of a wrong choice, no advertised functionality will save.

The variety of projectors will allow you to choose the right model for your own purposes. This will save the budget and get maximum efficiency.