subject: Buying A New Digital Projector [print this page] If you are in the market for a new digital projector, you need to know a few things before you make a purchase in order to get the best deal for your dollar. The best topic to start your education with is some of the basic home theater and basic business projector technologies that are popular today. You will want to get an idea of some example uses by learning about some of the different features that are available on different models. Your next digital projector has to fit your needs and serve the purposes that you need it too.
The digital projectors today are available in different colors, bringing cinema theater quality inside the home. Advanced technology delivers distinct, crisp and clear contrasts and brilliant colors like never before. Images come to life, and between the incredible picture and great sound quality, these are not your projectors from the 80s!
Todays new digital projector systems, whether they are for business purposes or they are to be used as home theater systems, depend on receiving an electric signal from a data source. The electric signals for the machines can be either digital or analog, and by data source we mean a VCR, DVD player, Blu ray player, etc. The electric signals are transformed into an image which is, of course, then projected onto a screen. If the signal that is sent is analog it must be converted to a digital signal first. This is done by it passing through an analog to digital signal converter. This is what makes the digital projector digital!
Right now there are two types of technology that are used for home theater projectors and business projectors. These are the LCD (or liquid crystal display) projectors and the Digital Light Processing (DLP) projector. The DLP projectors use something called a DMDT chip to process the digital signal. The light source is passed through a color wheel and onto that chip. The light then is reflected off of the chip through the lens, then onto the screen. This is pretty new technology that has led to a revival of sorts with home theater projector systems and the miniaturization of the industry.
In a LCD digital projector, the digital signal is processed to polysilicon panels. A light source is passed through a series of dichroic mirrors. Mirrors that are dichroic separate the various color wavelengths and then through the polysilicon panels. Then, activated pixels process the light into a final compilation, which is then projected through the lens and onto the screen.
