When you’ve been thinking about buying a home theater projector, perhaps to connect with an HDTV tuner, and have read opinions or finished a bit bit of research, you may be aware that there are applied sciences competing for the contents of your wallet.
Both LCD and DLP are used in projectors suitable for home theaters, but they work in fairly different ways and produce slightly different results. For those who ask round ‘ significantly in electronics stores, you are likely to be supplied with a mass of knowledge that’s confusing and infrequently just plain wrong. So 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 by way of the LCD panels, individual pixels (or picture parts) could be both opened or closed to either allow light to pass by way of 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 predominant advantages over DLP. They produce more accurate colors (because of the three separate LCD panels), they produce a slightly sharper image (although this is as good as undetectable when watching films) and they’re more light-environment friendly, which means they produce brighter images utilizing less power.
Nonetheless, LCD projectors also have some disadvantages, though because the expertise improves these are becoming less and less relevant. The first of those is pixelation, or what’s referred to as the screen door effect. This implies that typically you possibly can see the individual pixels and it looks as if you’re viewing the image by way of a ‘screendoor.’ The second historic disadvantage of LCD v DLP is that LCD does not produce absolute black, which means that contrast 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 better) signifies that pixelation is less of a problem than it used to be. And the improved potential of LCDs to supply high-distinction images is also allowing them to be taken more seriously by home theater enthusiasts.
Digital Light Processing (DLP) is a expertise developed by Texas Instruments and it really works by projecting light from the top 10 mini 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 show it off. Most DLP projectors have only one chip, so to be able to reproduce colour, a coloration 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. Each mirror on the DLP chip tilts towards or away from the lens path relying on how a lot of a specific colour light is required for that pixel at any given instant.