In case you’ve been thinking about shopping for a home theater projector, perhaps to connect with an HDTV tuner, and have read reviews or carried out a little bit of analysis, you may be aware that there are two technologies competing for the contents of your wallet.
Each LCD and DLP are used in projectors suitable for home theaters, but they work in quite other ways and produce slightly different results. In the event you ask around ‘ notably in electronics stores, you’re more likely to be supplied with a mass of data that is complicated and infrequently just plain wrong. So right here, in an effort to clear the fog surrounding projectors, is our guide to LCD v DLP.
LCD projectors have three separate LCD panels, one for red, one for green, and one for blue components of the image being processed by the valuable projector. As light passess by the LCD panels, individual pixels (or picture elements) might be either opened or closed to both allow light to pass by way of or be filtered out. In this method the light is modulated and an image projected on to the screen.
LCD projectors have historically had three primary advantages over DLP. They produce more accurate colours (due to the three separate LCD panels), they produce a slightly sharper image (though this is as good as undetectable when watching motion pictures) and they are more light-efficient, which means they produce brighter images utilizing less power.
Nonetheless, LCD projectors even have some disadvantages, though because the know-how improves these have gotten less and less relevant. The first of those is pixelation, or what’s often called the screen door effect. This signifies that sometimes you’ll be able to see the person pixels and it seems as if you’re viewing the image through a ‘screendoor.’ The second historic disadvantage of LCD v DLP is that LCD would not produce absolute black, which means that distinction is less than you’ll get with DLP.
Nonetheless, the advent of higher resoltion LCD projectors (notably ‘HD-ready’ projectors which have a horizontal resolution of 768 pixels or greater) signifies that pixelation is less of a problem than it used to be. And the improved capacity of LCDs to supply high-contrast images can be permitting them to be taken more significantly by house theater enthusiasts.
Digital Light Processing (DLP) is a know-how developed by Texas Instruments and it really works by projecting light from the 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 show the pixel on or away from it to show it off. Most DLP projectors have just one chip, so in order to reproduce colour, a shade wheel consisting of red, green, blue and generally, white filters is used. The wheel spins between the lamp and the chip and adjustments 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 selected color light is required for that pixel at any given instant.