Projectors

/Projectors
Projectors2017-07-11T11:19:54+00:00

Data/Video Projectors are the most frequently used technical equipment at events. They even may be described as a must for congresses, seminars and meeting events in particular.

Large display areas can be formed economically by using projectors and appropriate screens or surfaces. Before selecting a projector, first the necessary display area size should be determined with regard to the number of event participants and afterwards physical characteristics of the environment should be taken into consideration.

In general, distinguishing features of projectors are as follows:

Main factors affecting the light power selection for a projection device are the ambiance light level and the required size of the display area (screen) at venues where events take place. For instance, a projector with 3000 AnsiLumen light power can be enough for a small indoor event that would be participated by 10 people. However if that event is to be held in a room which receives daylight from windows then the projection device to be used in that room should have more light power.  We, as AVICON, have projectors with light powers varying between 2500 and 20.000 AnsiLumen available in our rental stock.

Even though projectors can be used in several environments, unfortunately it is impossible to obtain images on a surface which receives direct daylight. It is the LED screens that should be preferred in that kind of environments.

The recent Full HD revolution inevitably effected projectors as well. Although high-resolution videos and visuals are now frequently used for presentations and events, a lot of presentations are still in 1024×768 resolution called SVGA.  When making a projection selection, the resolutions of the media and presentations to be used during the show should be taken into consideration. We have products that meet all client needs from 1024×768 resolution to 1920×1200 resolution available in our rental stock.

In case that media and presentations are not prepared in high resolution, using a Full HD projection device will have hardly any effect, and this is something that should be taken into account in terms of budget.

 

Projectors must be located at certain distances according to their lens features for the size of display areas required or screens used. In general, projectors with low light power have fixed lenses which means they can only be used with the lenses on them. For instance, let’s say that we want to create a 3m-wide display area through a projector with fixed lens whose focal length is f:1.8-2.2. In that case the projector must be located at a distance between 5.4m and 6.6m from the screen. In a meeting with 150 participants, that distance will perhaps coincide with one of the protocol chairs and therefore we will need a projector and lens through which we will be able to obtain a same-sized display area from a further or closer distance. We, as AVICON, have alternatives of projectors with lenses from f:0.8 to f:8.4 available in our rental stock.

 

One of the features of projectors that makes them different from one another is the technologies they use to create image. These technologies used in projectors nowadays are called LCD and DLP. Both technologies have advantages and disadvantages to each other. DLP technology, along with its enhanced derivatives called 3 Chip in particular, got ahead of LCD technology in terms of color and contrast. They are unrivaled where high light power and high resolution are needed and especially where Dataton / Watchout and suchlike wide screen presentation systems are used. In wide-screen presentation systems obtained through combining more than one projection image; projection image junction points are seen far less – compared to LCD projection applications – thanks to their high contrast features. The biggest disadvantage of 3 Chip DLP projectors is their high cost.