If you’ve been thinking about shopping for a home theater projector, maybe to connect with an HDTV tuner, and have read critiques or finished a little bit of analysis, you will be aware that there are technologies competing for the contents of your wallet.
Each LCD and DLP are utilized in projectors suitable for residence theaters, however they work in fairly other ways and produce slightly completely different results. In the event you ask round ‘ particularly in electronics stores, you are prone to be provided with a mass of information that’s confusing and infrequently just plain wrong. So here, in an effort to clear the fog surrounding projectors, is our information to LCD v DLP.
LCD projectors have three separate LCD panels, one for red, one for green, and one for blue parts of the image being processed by the projector. As light passess by way of the LCD panels, individual pixels (or picture elements) may be both opened or closed to either permit light to pass via or be filtered out. In this way the light is modulated and an image projected on to the screen.
LCD projectors have historically had three most important advantages over DLP. They produce more accurate colours (due to the three separate LCD panels), they produce a slightly sharper image (though this is nearly as good as undetectable when watching films) and they’re more light-efficient, which means they produce brighter images utilizing less power.
Nonetheless, LCD projectors also have some disadvantages, though because the technology improves these are becoming less and less relevant. The first of these is pixelation, or what’s generally known as the screen door effect. This implies that sometimes you’ll be able to see the individual pixels and it appears as if you might be viewing the image by way of a ‘screendoor.’ The second historic disadvantage of LCD v DLP is that LCD doesn’t produce absolute black, which implies that contrast is less than you would get with DLP.
Nevertheless, the advent of higher resoltion LCD projectors (notably ‘HD-ready’ projectors which have a horizontal resolution of 768 pixels or higher) means that pixelation is less of a problem than it used to be. And the improved potential of LCDs to supply high-contrast images can also be allowing them to be taken more significantly by house theater enthusiasts.
Digital Light Processing (DLP) is a technology developed by Texas Instruments and it really works by projecting light from the best projector‘s lamp onto a DLP chip, made up of thousands of tiny mirrors. Each mirror represents a single pixel and directs the light projected onto it either into the lens path to turn the pixel on or away from it to turn it off. Most DLP projectors have just one chip, so with a view to reproduce coloration, a color wheel consisting of red, green, blue and typically, white filters is used. The wheel spins between the lamp and the chip and changes the color of the light hitting the chip from red, to green, blue. Every mirror on the DLP chip tilts towards or away from the lens path depending on how a lot of a specific color light is required for that pixel at any given instant.