The most important characteristics are:
- Technology (LCD or DLP)
- Luminosity (ANSI lumens)
- Duration of lamp
- Room size, projection distance, and screen size
- Types of projectors
- I’m going to tell you a little about each of the main characteristics.
How is a projector with LCD technology different from one with DLP technology?
The projectors with LCD (Liquid Crystal Display) technology divide the halo of light that projects in the three primary colors (red, green and blue) the image is formed by dots. The images look very bright and with colors with a good level of saturation, but it can make it look pixelated. It is necessary to do a maintenance to them, cleaning the filters every certain number of hours of use (100 and 300 hours), according to model. The lamp duration of LCD projectors is usually shorter than DLP technology.
The projectors with DLP (Digital Light Processing) technology offer an image with a very clear contrast, smooth without jumps and the pixels are not displayed. Superior native contrast, especially with whites and blacks, ideal for projections with text.
How much luminosity do I need my projector to have?
Luminosity is measured by ANSI LUMENS, which is the unit of measurement of light. Depending on the natural light and the size of the room or classroom where we are going, we will need more or fewer lumens. The more natural light and larger, we need a more powerful projector, with more lumens, If the room or the classroom can get more darkness, we can use a projector with fewer lumens.
In what format are we going to project?
The projectors can project in 4: 3 (square) format most presentations and in 16: 9 (panoramic) format photos, videos …
What resolution will we choose for our projector?
There are different resolutions, depending on the image quality we want to have.
Me at least for meeting rooms and classrooms of 5 to 10 square meters, I advise XGA (1024 × 768)
What is the contrast?
The contrast is the ratio that measures blacks and whites in the image. The more contrast the projector has, the blacks will be blacker and the whiter whites, the images will be sharper. It is represented in the characteristics of the projectors with the following numbering, according to the 15000 projector model:1
Lamp life and lamp types
Lamp life is a very important factor to consider before choosing a projector since depending on the use that we are going to give it, we have to take into account the cost of maintenance.
Right now there are two types of a lamp on the market, MERCURY and LED
Mercury projector lamps are the ones that have been sold so far, but given its high energy consumption and its high polluting impact, an agreement was signed in which, starting in 2020, mercury lamps will no longer be manufactured.
LED projector lamps, these lamps offer many advantages over mercury, do not pollute, have a durability of 20,000 hours, consume half the energy and also maintain the quality in viewing during the life of it. In another post, I will talk about the projectors with LED lamp and the advantages they offer.
Projectors with LED lamp up to 20,000 hours without changing the lamp
Room size, projection distance, and screen size
You have to take into account the size of the room, the size of the screen in order to calculate the distance in which to install the projector.
Then I leave you to link distance calculators for projectors from the main manufacturers of projectors.
acer, Optima, NEC, EPSON, SONY, BenQ
Distance calculators to place the projector
Types of projectors
Projectors with LED lamp, they are installed depending on the characteristics of the projector and the rooms, the lamps have a duration of 20,000 hours (15 years for 6 hours a day), consume half the energy of one mercury lamp and maintain the quality of viewing during the entire life of the lamp.
Medium-distance projectors, installed at a distance of between two and 3 meters, are suitable for use as home cinema or to project information.
Short distance projectors are installed at a distance between 0.50 and 0.90 cm, these have the advantage that they do not lose so much quality when projecting closer, they do not project shadows or dazzle the speaker.
Ultra-short distance projectors are installed at a distance of between 0.30 and 0.40cm, its quality is higher because the distance of projection is lower and like the short distance do not project shadows or dazzle speaker.
Interactive projectors, these convert the surface where they project into interactive, depending on the model can interact with special markers and fingers.
Portable projectors, are smaller in size and are more adaptable since they do not need installation for proper operation.
If you need us to help you choose the projector that best suits your needs, we are happy to help. You can send us a message, we will reply as soon as possible. You May Like Outdoor Projector.