This is a special class of projectors with high brightness, large size and weight.
These projectors are used for projection in large rooms, such as conference halls, concert and assembly halls, as well as for open-air installations to create projections on buildings.
These projectors are much more expensive than their office counterparts, including the fact that they have a lot of additional features.
The brightness of the projectors starts with 5000 lumens and goes up to 40000 thousand (like Barco HDQ-2K40, the brightest projector in the world). Stoimosti approximately $100000)
Office projectors also can have a brightness of 5000-6000 lumens, so let's understand, what is the difference between these projectors from regular office projectors, besides the light output. 1. Case design
Often these projectors are made in a solid protective case, because these projectors are mainly used for installations, exhibitions, shows, and the like. It means that they have to be transported, installed, plugged in and out several times in short time during the whole operation period. Correspondingly the case has to be strong and heavy. Such projectors weigh about 20 kg (you can not go out). 2. Availability of interchangeable lenses
It is not rare that the complete set of projectors includes a set of interchangeable lenses. This allows you to use the projectors for different types of applications (cinema halls, studios, exhibitions, installations, concerts, auditoriums, etc.)
Each lens has its own optical parameters: focal length, aperture ratio, focus range. This allows you to equip the projector with a lens that is suitable for the specific task.
Usually projector manufacturers clearly indicate which lens models are compatible with this or that projector.
In addition, the lenses themselves can have an adjustable or fixed zoom. If you plan to use the projector at different points, choose the adjustable zoom.
Types of lenses:
3. A motorized lens on a projector
- Ultra-short-focus lenses. The projection ratio is 0.25-0.5. These are used when you want to place the projector almost close to the screen. For example for rear projection.
- Short-throw: 0.5-1.1. Use for small spaces or when you want to project close to the screen and get a wide image.
- Standard 1.2-2. Suitable for most applications, medium-sized rooms, auditoriums.
- Long-focus and ultra-long-focus 2-4, and over 4. Use when a projector is placed far away from the screen.
This is a video lens which has an electric motor which allows you to zoom or focus the image. This is done with a remote control. This lens makes the projector more expensive. You should install it if you can't access the projector (e.g. mounted on the ceiling or somewhere else) and you need to focus the image.
If you can access the projector, you can install the standard lens and do it manually. 4. Multiple lamps
Usually installation projectors have several lamps, which gives a high luminous flux, higher reliability. As an advantage it is possible to name a lot of different modes of operation. For example: the lamp can operate in two modes - normal and high brightness. In addition, you can use the remote control to turn on or off one of the lamps, resulting in four modes of operation.
If one lamp fails, you can continue to use the projector without interrupting the show.
Multiple lamps allow you to conserve the life of each lamp by turning them on one at a time. This is important if you run the projector continuously for long periods without interruptions.
In addition to the presence of two lamps, projectors can also use lamp units with up to four lamps.
All this makes for even greater reliability and brightness.
Reliability is especially important for installations where big shows are being held, and every detail counts. 5. Triple matrix DLP technology
Some installation projectors have three DMD chips to handle each color. Using three matrix DLP technology in projectors makes them much more expensive. But it is necessary to note the advantages of this technology in comparison with single matrix DLP projectors. High resolution, excellent color rendering, good performance, absence of flicker. 6. Availability of various connectors
These projectors have a variety of inputs and outputs, for connection of different cables and realization of different tasks. They have HDBaseT technology which allows to transmit both sound and video over long distances (about 100m and more) using twisted pair cable.
This provides high reliability of uncompressed video and audio with high quality and resolution, without time delays. Unlike other cables in which the quality of the signal decreases in proportion to changes in distance, which causes interference in the video and audio, this technology does not suffer from these disadvantages. Back to table of contents