If you’ve been thinking about buying a home theater projector, maybe to hook up with an HDTV tuner, and have read critiques or achieved slightly little bit of analysis, you will be aware that there are technologies competing for the contents of your wallet.
Both LCD and DLP are utilized in projectors suitable for home theaters, but they work in quite alternative ways and produce slightly different results. If you happen to ask round ‘ notably in electronics stores, you are prone to be provided 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 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 way of the LCD panels, particular person pixels (or image components) may be either opened or closed to both 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 most important advantages over DLP. They produce more accurate colors (due to the three separate LCD panels), they produce a slightly sharper image (though this is nearly as good as undetectable when watching movies) and they are more light-efficient, which means they produce brighter images using less power.
Nevertheless, LCD projectors even have some disadvantages, though because the technology improves these are becoming 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 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 would not produce absolute black, which signifies that distinction is less than you’d get with DLP.
Nevertheless, the advent of higher resoltion LCD projectors (particularly ‘HD-ready’ projectors which have a horizontal resolution of 768 pixels or higher) means that pixelation is less of an issue than it used to be. And the improved potential of LCDs to supply high-distinction images can also be allowing them to be taken more severely by dwelling theater enthusiasts.
Digital Light Processing (DLP) is a expertise developed by Texas Instruments and it really works by projecting light from the projector’s lamp onto a DLP chip, made up of 1000’s of tiny mirrors. Every 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 only one chip, so with a purpose to reproduce colour, a shade 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 much of a specific color light is required for that pixel at any given instant.