For those who’ve been thinking about shopping for a home theater projector, perhaps to connect to an HDTV tuner, and have read critiques or executed a little bit bit of research, you will be aware that there are two technologies competing for the contents of your wallet.
Both LCD and DLP are used in projectors suitable for house theaters, however they work in fairly other ways and produce slightly totally different results. When you ask around ‘ particularly in electronics stores, you’re more likely to be provided with a mass of information that is complicated and often 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 elements of the image being processed by the projector. As light passess by the LCD panels, individual pixels (or image parts) may be either opened or closed to both permit light to pass by means of 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 fundamental advantages over DLP. They produce more accurate colors (because of the three separate LCD panels), they produce a slightly sharper image (though this is pretty much as good as undetectable when watching films) and they are more light-efficient, which means they produce brighter images utilizing less power.
However, 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 often known as the screen door effect. This means that typically you may see the person pixels and it appears to be like as if you are viewing the image via a ‘screendoor.’ The second historic disadvantage of LCD v DLP is that LCD does not produce absolute black, which signifies that distinction is less than you would get with DLP.
However, the advent of higher resoltion LCD projectors (significantly ‘HD-ready’ projectors which have a horizontal decision of 768 pixels or larger) means that pixelation is less of a problem than it used to be. And the improved capability of LCDs to produce high-distinction images is also permitting them to be taken more significantly by home theater enthusiasts.
Digital Light Processing (DLP) is a expertise developed by Texas Instruments and it works by projecting light from the top 10 mini projector‘s lamp onto a DLP chip, made up of thousands of tiny mirrors. Every mirror represents a single pixel and directs the light projected onto it both into the lens path to turn the pixel on or away from it to show it off. Most DLP projectors have just one chip, so as a way to reproduce coloration, a color wheel consisting of red, green, blue and generally, white filters is used. The wheel spins between the lamp and the chip and changes the colour of the light hitting the chip from red, to green, blue. Each mirror on the DLP chip tilts towards or away from the lens path relying on how much of a particular colour light is required for that pixel at any given instant.