Video projector manufacturers currently use three kinds of technology.

 

LCDs

White light from a high power lamp is separated by dichroic mirrors and passes through three panels (red, green, blue). An X-Cube then recomposes the image before it enters the lens that projects the image.

This is currently the most commonly used technology.

 

Digital Light Processing (DLP)

The Digital Mirror Display (DMD) chip was invented by Texas Instrument, and is covered by millions of mobile micromirrors. These mirrors reflect different quantities of light depending on the direction they are facing, set by the video signal. To produce colour, the light produced by an analogue lamp to the LCD’s lamp changes from red, green, and blue via a rotating disk, and is captured by the projector’s lens.

 

LED Picoprojectors

More than just ultra-compact, picoprojectors using an LED light source have a lifetime of around 30,000 hours of light emissions. Unlike traditional lamps, they light up almost instantly and they do not require the same ventilation as a traditional video projector once they shut down. However, the limited power of LED lighting restricts these products to relatively dark environments.

 

If you need to view the video projector from a short distance, you can use ULTRA-SHORT FOCAL technology. The ultra-short focal system produces high-quality projections. With this solution, the more light before your eyes, the darker the screen.

 

kMO will help you to choose the equipment that is right for you in terms of your budget and the four main criteria when selecting this technology: Contrast, Brightness, Definition, Sound Levels.

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