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Benefits and Applications for Today’s LED Displays

Benefits and Applications for Today’s LED Displays

Projection technology has evolved at a fairly quick pace over the past several years. Most notably, the native resolution of projectors has increased, while the products themselves have become smaller, brighter and less expensive. Even with this diversity of progress across many technological fronts, nearly all projectors remain harnessed to traditional lamp technologies:

· Multi-kilowatt xenon bulbs - primarily employed in high-brightness and large-venue projectors (>10K lumens), as well projectors for commercial cinemas.

· UHP or metal-halide lamps – primarily employed in lower brightness projectors (<10K lumens), often found in classrooms, boardrooms and home theaters.

Although limited in raw lumen output when compared with the more traditional lamp technologies, recent advances in LED illumination have captured the imagination of projector manufacturers, integrators, consultant and end users alike. It is easy to understand why, in that LED illumination offers many advantages for applications satisfied by lower brightness projectors.

LED illumination is typically provided by an LED module that contains separate Red, Green and Blue Light Emitting Diodes, powered by a specialized switching power supply. There is no color wheel involved in LED illuminated projection systems. Rather, the LED’s pulse in sequence to generate color primaries. The pulsing is digitally controlled, and the duty cycle optimized, on a frame by frame basis, as well as within the frame. This creates the possibility for dramatically improved gamut and saturation. Indeed, although single-chip LED illuminated projectors cannot compete with their 3-chip counterparts in terms of sheer lumens, they are very comparable when it comes to color performance.

LED illumination advantages, plus potential advantages include:

· Deep, Saturated Colors – up to 140% of the NTSC Color Gamut.

· Excellent Contrast via Dynamic Black – the LED’s can be instantly pulsed “off.”

· Enhanced Reliability – aside from fans, there are no color wheels or otherwise moving parts.

· Environmentally Friendly – no harmful substances like Mercury or Xenon.

· Low Cost of Ownership – typical LED life expectancy is up to 60,000 hours.

· Efficient – energy consumption is currently up to 30% lower than lamps of similar brightness.

Currently the only “disadvantage” to LED illuminated DLP technology is the light output. State of the art brightness is currently rated at about 800 lumens. Because of the incredible color saturation and contrast, those 800 lumens will actually appear roughly 25% brighter to our eyes.

There are still plenty of applications that will benefit from the current brightness levels of LED illuminated projectors. These include:

· Home Cinema

· Command and Control / process control (rear screen)

· Video Wall for museums, retail and public displays

· Simulation

· Digital Signage

As stated earlier, it is difficult to find a sector of the AV industry that isn’t excited about the potential of LED. Digital Projection is dedicated to engineering the industry’s most advanced LED displays. To read more about DP’s new LED innovation, the M-Vision 1080p-LED, click here.

About the Author

A digital imaging pioneer and projector industry leader, Digital Projection International (DPI) manufactures and distributes an extensive and expanding line of ultra high-performance 3-chip and single-chip DLP® projection systems. These projectors are the reference standard for demanding applications such as large-venue, live-event staging, Fortune 5000, homeland security, education, medical and scientific research, command and control, digital cinema, commercial entertainment, worship and elite home theater.

Multiple company accolades include two Emmy® Awards for Outstanding Achievement in Engineering Development by the Academy of Television Arts and Sciences. DPI remains the first and only projector manufacturer to win the coveted award.

What is a good laptop i can buy for $600 or less?

I need a laptop for under 600 dollars. But i can go as high as 700. It needs to be able to run world of warcraft and it would be great if it had an illuminated keyboard (like built in LED lights)

I'd recommend using Windows PC Scout to help with your decision. Go to http://www.microsoft.com/windows/pc-scout/ and click the orange 'Let's get started' button.

Cheers,
Feran
Windows Canada Outreach

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