DLP Projector
HDTV DLP Home Theater Front Projectors
Why you should preffer DLP HDTV projector over a Plasma or LCD projectors?
In every DLP (Digital Light Processing)
projection system there is and optical semiconductor known as DLP chip, that was
invented by Texas Instruments in the year 1987. DLP chip is the very sophisticated light switch. This switch contains 2 million hinde-mounted microscopic mirrors that are so small, less than on-fifth the wisth of a human hair.
DLP is a leading technology that is being used for many years in digital cinema projection. Each mirror in the projection chip represents on or more picels in the final projected image. Read all about this amazing and advanced technology in this review.
Single-Chip DLP Projectors
Projection of color image onto a screen can be done by two methods, one method utilises a single-chip DLP and the othera three-chip construction. The third method, squential illumination by three colored light emitting diodes is still in development, and it is being used in TV that are manufactures by the company Samsung.
In the Single-Chip method, color is produced by a color wheel that is being placed between the lamp and the DMD and the light is reflected out through the optical components use in the projector. Each section of the color wheel of the DLP projector display different color of the primary ones: red, green and blue, and the forth section is used to boost the brightness of the final projection images. The cheap is also called DMD (Digital Micromirror Device), and it works by synchronizing its rotation movements with the color wheel, so when one of the wheel sections is in front of the projection lamp, the DMD is synchronized with that specific color section, so it can be displayed on the DMD. When done in high rate, you will see a full color image projected onto a screen, and this is done that you will not notice, that this actually is done by projecting three color separately on the same place, but in rapid replacement of the colors.
This technology has disadantages too. One of the disadvantages is visual artifacts and it is also called
"rainbow artifacts". Some people reported eye strain and headaches while viewing
a movie in the cinema and reported this to the manufacturers. Projector companies now have new developed DLP projectors with new LED that can produce images in a much faster rate, so the problem that people felt while using projectors with the old technology, is solved. This problem exists only in single-chip projectors and not in the three-chip projectors that we will reviews next. The are alternative solutions to that rainbow effect that we will not discuss here, but you shuold know that othe alternatives solution exists in a single-chip DLP projectors.
Comparison of picture reliability and how it stands in lab test, for example: Picture Reliability, Progressive Degradation. In those tests, which I highly recommend that you watch, will shw you a clear picture, in which you will see that DLP is much more advances in technologic terms and preserves the picture quality, even after 4300 operating hours. The test checked the Contrast, Uniformuty, Brightness, Colorimetry and Visible Picture Defect. They compared 5 units of LCD agains 2 unites of DLP, and the results was that the LCD contrast, at the end of the tests, reached 30% of its maximum contrast since the beginning of the test, and the got a failure color shift mark in the first study, Visible picture defect was also noticed on all LCDs that were tested. None of the mentioned results was not seen in the 2 DLP units, in the Picture Reliability test. Watch the video for more info.
Video That Explains The LDP Technology
Advancing To Three-Chip DLP Projectors
As the technology advanced and new solution are being developed to improve the viewing experience, many companies adopt those new tech to stay in front of the competition and deliver crisp projection movies and eliminate the problems that accured using the one-chip DLP projectors.
Those DLP projectors using the new technology are called three-chip DLP projectors. Those projection units use a prism to split the light from the lamp. By doing this, each of the primary color (Red, Green and Blue) are routed to a single dedicated DMD chip.
As we speak, new technologies are being develope to bring us the best possible quality DLP projectors, that will, we hope, will replace LCD projectors and the Plasma in every home in the near future. When new tech are being developed, the prices of the older DLP projectors are getting cheap and cheaper, and more affordable to many more people. So it is just a matter of time, till every home could afford buying aHome Theater DLP projector, and watch his or her favorite DVD or Blueray movies at home with friends. DLP is becoming very popular in the rear-projection TV market these days. The year 2009 will sure bring new techs and brand new advanced projectors to the market so we can enjoy the same experience that we had in the cinema, right at home.
The advanced in the projectors field and the competition between the leading companies who manufactures DLP projectors, just bring us, the customers, better projectors and better viewing experience. The miniaturization of the component, give us better portability and save us space in our homes. We all profit from this, and the future of the Home Theater seems to be very exciting indeed.
Today I saw an article of a projector that is in the size of a palm of my hand. Even not a DLP projector, it just gives us a hint on which direction the technology is going. We will just need to think of the next DVD or BlueRay movie that we are going to watch next. Cinema in every home, thats the future and it is going in rapid steps to that direction. Meanwhile you can enjoy the projector rental services, and enjoy those amazing projectors right at your living room and not worry about a thing, no bolb to replace and all the other stuff.