For those who’ve been thinking about shopping for a home theater projector, maybe to hook up with an HDTV tuner, and have read critiques or carried out a little bit bit of research, you’ll be aware that there are two technologies competing for the contents of your wallet.
Both LCD and DLP are used in projectors suitable for dwelling theaters, however they work in quite other ways and produce slightly totally different results. When you ask round ‘ significantly in electronics shops, you’re likely to be supplied with a mass of knowledge that is complicated and often 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 parts of the image being processed by the projector. As light passess through the LCD panels, individual pixels (or image parts) could be both opened or closed to either allow light to pass by or be filtered out. In this means the light is modulated and an image projected on to the screen.
LCD projectors have historically had three essential advantages over DLP. They produce more accurate colors (due to the three separate LCD panels), they produce a slightly sharper image (although this is as good as undetectable when watching motion pictures) and they’re more light-efficient, which means they produce brighter images utilizing less power.
Nevertheless, LCD projectors also have some disadvantages, although because the know-how improves these have gotten less and less relevant. The first of those is pixelation, or what’s known as the screen door effect. This implies that generally you can see the individual pixels and it appears to be like as though you are viewing the image via a ‘screendoor.’ The second historic disadvantage of LCD v DLP is that LCD doesn’t produce absolute black, which implies that distinction is less than you’d get with DLP.
Nevertheless, the advent of higher resoltion LCD projectors (significantly ‘HD-ready’ projectors which have a horizontal resolution of 768 pixels or better) implies that pixelation is less of an issue than it used to be. And the improved potential of LCDs to supply high-contrast images is also permitting them to be taken more critically by residence theater enthusiasts.
Digital Light Processing (DLP) is a expertise developed by Texas Instruments and it really works by projecting light from the 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 show the pixel on or away from it to turn it off. Most DLP projectors have just one chip, so in an effort to reproduce colour, a shade wheel consisting of red, green, blue and sometimes, white filters is used. The wheel spins between the lamp and the chip and modifications 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 depending on how a lot of a selected color light is required for that pixel at any given instant.