When you’ve been thinking about shopping for a home theater pico projector, perhaps to connect to an HDTV tuner, and have read reviews or executed a bit of 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 residence theaters, but they work in quite alternative ways and produce slightly completely different results. When you ask around ‘ notably in electronics shops, you’re likely to be provided with a mass of knowledge that’s complicated and infrequently just plain wrong. So right 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 means of the LCD panels, particular person pixels (or image elements) might be either opened or closed to both allow light to pass through 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 most important advantages over DLP. They produce more accurate colors (because of the three separate LCD panels), they produce a slightly sharper image (although this is nearly as good as undetectable when watching movies) and they’re more light-environment friendly, which means they produce brighter images utilizing less power.
Nonetheless, LCD projectors also have some disadvantages, although because the expertise improves these are becoming less and less relevant. The first of these is pixelation, or what’s generally known as the screen door effect. This means that generally you’ll be able to see the person pixels and it looks as though you are viewing the image by a ‘screendoor.’ The second historic disadvantage of LCD v DLP is that LCD would not produce absolute black, which signifies that contrast is less than you’ll get with DLP.
Nevertheless, the advent of higher resoltion LCD projectors (notably ‘HD-ready’ projectors which have a horizontal decision of 768 pixels or better) means that pixelation is less of an issue than it used to be. And the improved skill of LCDs to provide high-contrast images is also permitting them to be taken more seriously by home theater enthusiasts.
Digital Light Processing (DLP) is a technology developed by Texas Instruments and it works by projecting light from the projector’s lamp onto a DLP chip, made up of hundreds of tiny mirrors. Each 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 only one chip, so in an effort to reproduce shade, a colour wheel consisting of red, green, blue and generally, 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. Every 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.