【 Weak current College 】 professional projection engineering analysis of the importance of the screen

Relative to the LCD screen, plasma screen, lED screens, projection screen active glow to relatively low cost to vote out the big screen, and clear picture quality, not only can direct for computer software demo or high-definition video, a wide range of applications.

As a General Conference room, buy a projector direct projection on the wall or together with a few hundred dollars to buy a 80-inch screen, now has no technical difficulty, nor in the scope of this article. Here to discuss professional projection project, is a large-screen projection, screen projection or stereo projection, broadly understood, also includes other project-related hardware, such as fusion devices, play equipment, stereo etc., therefore, professional projection project is a systems integration projects, programmes and configure highly functional application scope is extremely broad, such as cinemas, stereo mobile cinema, large meeting place, performing arts venues, virtual labs, driving simulation, flight simulation, command and control center, planning Exhibition Center, virtual sales center and more.

Professional projection project can be classified as follows:

According to the basic projection schemes, can be divided into single-channel common projection, single-channel stereo projection, multi-channel common projection, multi-channel stereo projection. The vast majority of cases, multi-channel projection are left and mosaics, which can be more wide projection screen. For example, a single channel of the projection screen is 4: 3 or 16: 9, and three channel screen can be reached at around 10: 3. On the projection, each channel using a projector, but on the passive stereo projection for each channel you want to use two projectors, three-channel stereo projection will use 6 projectors.

Press play content, can be divided into play video and playing virtual reality. For single-channel projection, video and play virtual reality are no problem, for multiple-channel ring screen projection, currently require different solutions. Internally there are quite a few companies have developed playing multichannel video solution, the so-called Fusion machine that a multi-channel image fusion and correction, so that the ring curtain on video as a whole. But hardware integration because no 3D acceleration, often not compatible with virtual reality. For virtual reality applications, many mainstream virtual reality software such as CCTV code VR-Platform, etc can support multi-channel ring screen projection, the software itself has a multi channel module and stereo module, complete with software can solve the problem. If the user has two application requirements, you will need to increase the video switching equipment.

Press the screen structure, can be divided into direct curtain, curtain and ball curtain, technical difficulty, in turn, increase, costs increase sequentially. For direct screen, do not need to use surface correction technology, in most cases, you use the projector itself adjustment function can meet the requirements. Especially if I am in the precise design and construction experience, you can even achieve effect good hard concatenation without using fusion technology, increase the viewable area and significant savings in costs.

Ring and ball curtain needs using edge fusion and surface correction technology, cost increases greatly, but because of the Central curtain with wrapping, to increase the immersion, the audience for immersive experience, it is still widely used. However, SMR angle (referring to the SMR Central angle) according to the number of channels, the site features, audience and other factors into consideration, rather than better. Some users believe that perspective must be large enough to even want to two-channel projection is made of 120 degrees, is obviously not true. Generally speaking, three-channel maximum angle not more than 120 degrees. On large angle ring screen, near the center of a circle to have good ornamental effect, can accommodate the number of viewers, so the fewer large angle ring screen usually only suitable for only a small number of viewers, compared to founder, the House stood watching occasions, if the number of visitors, site longer, and next to the rear to ensure audience viewing angles, SMR due to appropriate reduced.

In addition, SMR angle also affected projector installation restrictions. Ring screen angle is very small, projector, screen side-by-side installation angle is large, the projector cross install, when central curtain at an angle range of projectors are often mutual interference, to avoid interference, use the short focal-length lenses, or increase a lot of cost, design sometimes need special attention.

Ball curtain on screen splicing and fusion have higher requirements, do not discuss here.

Press the screen type, can be divided into ordinary soft soft metal curtain, curtain, ordinary hard curtain, metal-to-screen, projection screen, and so on. Soft screen cheap, transportation, installation and removal are more convenient, the effect is very good, but for ring curtain, will inevitably have a bulging, cannot guarantee the accuracy of cylindrical surface. Hard screen is on the other hand, manufacturing, transportation, installation and removal are difficult, the cost is relatively high, but can ensure more accurate cylinder. Ordinary white curtain can meet General projection, but for passive stereo projection, you must use the metal curtain, because metal curtain will scatter projector came polarized light. Metal screen brightness high, colorful, not only do stereo projection, must be used when doing ordinary projection is also very well, is currently the popular trend. However, the metal screen prices relatively expensive, manufacturing is very difficult. Especially for width 2.4 m more large hard curtain, substrate often need stitching and metal coating is very sensitive, and must be completely uniform can guarantee results, large area sprayed metallic paint itself is a big challenge, but there is little material slightly uneven often causes a drop shadow effect is clear and dark, so considerable technical difficulty.

According to the projection techniques, can be divided into LCD and DLP projection technology. Usually that LCD technology with larger color difference, so the projector to select appropriately to meet the demand for multi-channel projection.
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Even if identified the basic programme projection may select the specific hardware is also very diverse. For example, at the heart of the projection equipment required:Projector, the brand models on the market, prices from hundreds to a few thousand dollars to the same machine, even for professionals who want to know how all these things are difficult. Many potential customers, or even start cannot fully understand their needs, let alone specific configuration. If the vendor's own expertise and experience is not enough, you often cannot make the optimization of the programme, resulting in wasted a lot of money and even influence the final result.

Some customers in determining the projection project configuration, often habitually to projector as the lead, this is not right! Yes, projector technology content is high, various terminology and indexes a lot, it seems that should dominate, but must not be projector manufacturers propaganda new technologies, beyond the practical need to blindly buy expensive engineering machine!, with LCD screen active glow, reflective projection is to display the image so that the essence of determines the projection of some limitation is not possible to rely on the projector's indicators to cover. If the screen is white, and the ambient light is very bright, and you never expect the projection function the white curtain call to black, in this sense, do not think that the choice of a high-brightness projector of engineering will be able to solve all the problems.

Professional projection project must begin with a space, and with screen-oriented!

First of all, according to the site design screen, layout of seating needs renovation, you need to consider the effect of the decoration on, without decoration, at a minimum, you should consider installing visor light curtains, reasonable design lighting programme to reduce the environmental impact of light and lighting. Although the screen only the entire projection project budget by 10%, but its importance is self-evident, it is the entire projection works in the largest and most prominent part of the appearance of the entire project has a decisive impact, so be sure not to be careless. Screen size, radians, types, and so on down, and then to the screen as the lead in identifying other hardware options. Of course, listen to the customer, take care of the customer's budget is essential. Some customers determine the system configuration, on the importance of the projector, beginning to spend a lot of budget buying projector, budgets and to consider screen, this is clearly wrong.

On a large screen, especially Central curtain, the important is not only the quality of the screen itself, SMR bracket design, manufacture, quality, accuracy, quality circles, including projector hanger manufacturing quality, factors such as hoisting accuracy are important. Many vendors do engineering screen only screen quote, shelf and installation is a photograph, this is misleading to the extent that they are in mechanical design, manufacture, installation, and so no advantage at all. For the entire production cycle curtain, shelf design and manufacturing, installation construction, transport, travel and other costs of up to 70%, much higher than the screen itself. Visible, select the vendor should select a can do all this work, a strength of the vendor, rather than selecting a only a piece of sheet metal sprayed metallic paint manufacturers of the screen.

In short, the formation of large-screen projection project is a need to have a wealth of expertise and experience of system integration work, is not simple to buy something so simple. Based on a screen-oriented philosophy, the company introduced from the aviation industry of precise design and manufacturing philosophy, rely on industry-leading 3D CAD platform and autonomous creation of parameterized ring curtain design system to meet a variety of projection of the rapid design and plan comparison. We not only manufacture high-quality screen, we are able to provide you with access to the projection system integration services and even entire multi-channel technical consulting and system integration services enables you to build many detours, satisfaction of high-quality, cost-effective large-screen projection works.