Table of contents:
- Types of projectors by purpose
- Picture output technology
- Projector Lamps
- Resolution, contrast
- Other parameters
- Outcomes
Video: Which projector is better to buy
2024 Author: Richard Flannagan | [email protected]. Last modified: 2024-01-15 02:26
Modern models of projectors in image quality are very close to TVs and are several times ahead of them in screen size. It is ideal for watching movies while meeting with friends and in a quiet family circle. In a split second, the projector will give the stage an enchanting setting for lectures, musical and humorous shows. To choose the right device, you need to understand the basic technical specifications.
Types of projectors by purpose
The projector will fulfill its main task only if you select the correct type of device for the purpose of use:
Devices weighing up to 350 g are called pocket devices. This is a convenient option for mobile presentations and business trips. Travel friendly, but not very functional.
For home use and office work, multifunctional stationary models with a good luminous flux are used. They display a clear picture on a maximum screen size. The devices are supplied with additional equipment, interchangeable optics.
Projectors of any type are compact, will fit into any interior, their installation and start-up does not take much time. Pocket TVs are not a substitute for a TV. For home use, it is better to purchase stationary type devices. Current models of projectors can be found at Vyboroved:
Picture output technology
Manufacturers use different technologies for image output, on which the price of the product and the quality of the picture depend:
The LCD system generates a luminous flux using a lamp and displays the image on the screen. The disadvantage is the grid-in-picture effect. Such budget models are based on three liquid crystal matrices (red, blue, green).
CRT requires special mounting of the projector. The body of the device is more bulky. The image quality is excellent and the lifespan is long. The disadvantage is that the unit is used only in a dark room.
All technologies have a common advantage: low eye strain compared to TVs. Light rays are directed to a white surface and return to a person in a reflected form.
Projector Lamps
For a home theater, the lamp must have a long life and a brightness of at least 900 lumens. Products are manufactured using different technologies:
Laser. The service life of such lamps is 6000 hours. The projectors are used when the room is darkened to the maximum. Image quality requires a white, well-leveled surface.
Projectors that combine laser and LED technology are capable of delivering up to 4000 lumens. This figure is equal to the brightness of a standard LCD TV.
Mercury lamp projectors are a thing of the past. Manufacturers are gradually abandoning them in favor of more environmentally friendly models.
Resolution, contrast
The resolution of the picture is indicated by the manufacturer in the attached documentation to the model:
Movies and games usually require HD (720p) format.
4K projectors are gaining popularity with the move to digital. This technology provides a high-quality, clear, highly elastic picture and is suitable for large home theater screens.
Contrast is the ratio of the brightness of white to the brightness of black. Ideal parameters are not yet attainable. Even very good specimens are not capable of flawlessly displaying black without a transition to dark gray, unless special conditions are created for this. For home use, a projector with a 2000: 1 contrast ratio is suitable.
Other parameters
When watching movies in a small room, keystone correction plays an important role. This parameter is indicated in degrees horizontally and vertically. It's good when the projector can be installed to the side of the screen and the picture will remain rectangular.
It is necessary to pay attention to the presence of the necessary connectors. In addition to composite, to which everyone is accustomed, there are more and more inputs and outputs for video and audio signal transmission. Fast signal transition is provided by S-Video, DVI, HDMI, HDMI Mini. The user may need USB connectors Type B, Type A, Micro USB A / B, USB 3.0 Type A, USB 3.0 Type B.
For fans of 3D display from a computer, it is important to ensure that the projector supports stereo pairing. The technology is supported to one degree or another by many models, but the best quality is given by devices specially designed for this task.
Outcomes
Projectors are gaining more and more interest from buyers. Attracted by the opportunity for an adequate price to get an image in large format. Development companies try to improve technologies and lure with unique offers. The main thing when choosing a device is to make sure that operation is possible under the conditions declared by the manufacturer. Then the projector will bring more joy than a TV, it will give you a good mood and an unforgettable experience.
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