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How DLP technology works

Posted: Tue Feb 23, 2010 1:52 pm
by Neo

Re: How DLP technology works

Posted: Sat Mar 13, 2010 9:15 pm
by Face

If you are interesting in DLP serch this may get something from that.

Re: How DLP technology works

Posted: Sat Mar 13, 2010 9:20 pm
by Face
1. The semiconductor that continues to reinvent projection

At the heart of every DLP® projection system is an optical semiconductor known as the DLP® chip, which was invented by Dr. Larry Hornbeck of Texas Instruments in 1987.

The DLP chip is perhaps the world's most sophisticated light switch. It contains a rectangular array of up to 2 million hinge-mounted microscopic mirrors; each of these micromirrors measures less than one-fifth the width of a human hair.

When a DLP chip is coordinated with a digital video or graphic signal, a light source, and a projection lens, its mirrors can reflect a digital image onto a screen or other surface. The DLP chip combined with the advanced electronics that surround it produce stunning images and video that have redefined picture quality.

2. The grayscale image

DLP chip's micromirrors tilt either toward the light source in a DLP projection system (ON) or away from it (OFF). This creates a light or dark pixel on the projection surface.

The bit-streamed image code entering the semiconductor directs each mirror to switch on and off up to several thousand times per second. When a mirror is switched on more frequently than off, it reflects a light gray pixel; a mirror that's switched off more frequently reflects a darker gray pixel.

In this way, the mirrors in a DLP projection system can reflect pixels in up to 1,024 shades of gray to convert the video or graphic signal entering the DLP chip into a highly detailed grayscale image.

3. Adding color

The white light generated by the lamp in a DLP projection system passes through a color filter as it travels to the surface of the DLP chip. This filters the light into a minimum of red, green, and blue, from which a single-chip DLP projection system can create at least 16.7 million colors.

With BrilliantColor™ Technology, additional colors are added including Cyan, Magenta and Yellow to expand the color pallet for even more vibrant color performance. Some DLP projectors offer solid-state illumination which replaces the traditional white lamp. As a result, the light source emits the necessary colors eliminating the color filter. In some DLP systems, a 3-chip architecture is used, particularly for high brightness projectors required for large venue applications such as concerts and movie theaters. These systems are capable of producing no fewer than 35 trillion colors.

The on and off states of each micromirror are coordinated with these basic building blocks of color. For example, a mirror responsible for projecting a purple pixel will only reflect red and blue light to the projection surface; those colors are then blended to see the intended hue in a projected image.

Re: How DLP technology works

Posted: Sat Mar 13, 2010 11:03 pm
by Neo
Your articles are very interesting. DLPs are still not 100% perfect. It has a long way to go. So far so good. However buyers are not 100% happy about the product as there are several bottlenecks to be addressed in future. We are working on DSPs of the same company at the moment along with few Microcontrollers. I hope there will be lots of opportunities in the field of Embedded and Robotics in near future.

Re: How DLP technology works

Posted: Sun Mar 14, 2010 8:46 am
by Face
yep...It is really great to keep in touch with new Technologies.
DLP is great technology we will have near future.but in Asian counties like Srilanka get late to reach those New technologies.
because of those prices.

But getting know about them is really help full and interesting.

my hobby is reading about New technologies.

my friends you also try to make it as a hobby.that hobby will help to develop your knowledge.

Re: How DLP technology works

Posted: Mon Mar 15, 2010 1:04 am
by Neo
I agree. If we don't keep ourselves updated, we will get obsolete very soon :D

Re: How DLP technology works

Posted: Mon Sep 25, 2017 4:35 pm
by Phonefix
DLP sets are usually lower in price than plasmas and LCDs, and they tend to have a better picture.