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LCD & DLP projectors


1. LCD stands for “liquid crystal display” a term used to indicate that the unit contains two transparent polarized panels, with a liquid solution between them.


2. With LCD, light shines through the panels from behind, causing an image to appear. Polarized panels will only pass light waves in one plane, and the panels are positioned at a 90 degree angle to each other, which means light from one plane cannot pass through the other panel. But when electricity passes through the liquid crystals, individual pixels are switched on or off, to produce a specific image.


3. With regards to projectors, LCD projectors typically send light through a prism from a metal halide lamp that separates the light into colors (green, red and blue). The video signal is essentially split by color, and the prism sorts the colors and projects the specified image.


4. LCD projectors are the most popular because they are lightweight and extremely portable. Typically, metal lamps are used for their ideal color temperature and ability to display a large amount of colors. Additionally, metal lamps can produce a vast amount of light in a small area, making them ideal for high-lumen outputs.


5. DLP stands for Digital Light Processing. With a DLP projector, white light is projected through an array of movable mirrors that control the intensity of each pixel of light as well as the color.


6. DLP projectors generally feature brighter, more defined display outputs than LCD, but are certainly more costly. Many businesses and educational companies prefer DLP over LCD.


7. Although DLP projectors are more expensive, they hold a distinct advantage over LCD projectors with regards to maintenance. Projector maintenance and cleaning are required to keep each unit in good functioning order.


8. Every interaction with a projector ultimately costs time and money; therefore, it is important to understand how often you will need to maintain your projector throughout its lifetime. DLP projectors can save a bundle on time and money since no filter is required, and DLP projectors features a lamp free design.

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