An LED projector is a device used to display videos or presentations in an enlarged format. "LED" stands for "light emitting diodes." That's important because these diodes are the lighting source for the projector. An LED projector is a 21st century replacement for the slide projector and the overhead projector, so common in the mid to late 20th century.
Shopping for an LED Projector
Although shopping for an LED projector was once difficult, simply because they were so scarce, today that's different. They're readily available in several varieties, with different specs and in different price ranges. As with most specialty electronics, though, you'll usually do better to shop online, as it's easier to find one in the right configuration and the right price.
Selecting the right LED projector is easy if you first decide what you need to use it for. The two main factors that will dictate which one you buy are the projector's cost and specifications. Knowing how you'll use your projector will help you decide how much you should spend for it and what features you need. Let's look first at some of the specifications that vary from one projector to another.
Technical Specs
Some of the specs that you need to consider include:
Aspect Ratio. This refers to the width of the screen vs. its height. Screens with SVGA, VGA, XGA and UXGA resolution all have an aspect ratio of 4:3. Because this is the standard, there's not much choice here.
Brightness. You'll find this measured in something called "lumens." The higher the number of lumens, the brighter it should be. Naturally, the brighter, the better. However, if you expect to use the projector where there's already a lot of room, this won't be as much of a factor.
Contrast Ratio. This is the ratio between the image's brightest and darkest areas. Average is somewhere between 500:1 to 1200:1.
Data Signal Ports. It's important that these are compatible with the image source with which they are paired.
Keystone Correction: A good projector will have an ability to correct image distortion created when the projector is facing the screen at an angle other than 90 degrees.
Video Format Capability: Don't get a projector if it does not accept the three main formats of PAL, SECAM and NTSC.
High Def LED Projector
With the advent of high-definition television has come also the high-definition LED projector. These projectors are capable of displaying images at an incredible resolution of 1080p. This makes the image very crisp and almost-life-like. Put simply, when you have a high-def LED projector, you have something capable of displaying film-quality images. You just can't go wrong.
Projection Screens
An LED projector is an outstanding choice for anyone who will be doing frequent presentations or lectures requiring visual aids. An equally smart choice is buying a projection screen to go with it. You can find these in various sizes and fabrics. Although it's possible to project your LED projector image onto a blank wall, it almost seems a waste. To get the best, crispest image, buy a good projection screen. The two working together provide an unforgettable visual experience.
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