DLP Technology

DLP Technology

Introduction:

DLP technology is a groundbreaking display solution, which uses an optical semiconductor to manipulate light digitally. It is a highly dependable, and the all-digital display chip delivers the best picture across a wide range of products, as well as large screen digital TVs, and projectors for business, home, professional place and digital cinema (DLP Cinema). In addition, it is a trustworthy technology used by foremost display electronics companies worldwide. Digital Light Processing (DLP) is a proprietorship technology developed by Texas Instruments. It works rather in a different method than LCD.

As an alternative of having glass panels through which light is passed, the DLP chip is a reflective surface made up of thousands of little mirrors. Every mirror stands for a single pixel. In a DLP projector, the light from the projector's lamp is aimed onto the surface of the DLP chip. The mirrors vibrate back and forth, and directing lights either into the lens path to turn the pixel on or outside from the lens path to turn it off.

In overpriced DLP projector, you can find three separate DLP chips, one each for the red, green, and blue channels. But, the DLP projectors that are below $20,000, there is only one chip. In order to classify color, there is a color wheel, which consists of red, green, blue, and sometimes white (clear) filters. This wheel twists between the lamp and the DLP chip and interchanges the color of the light hitting the chip from red to green to blue. Additionally, the mirrors are tilt away from or into the lens path based upon how much of each color is necessary for every pixel at any given moment in time. This activity inflects the light and creates the image that is projecting onto the screen. DLP technology is in use where image quality is in demand. Additionally, it is highly versatile display technology. It is the only display technology on the marketplace, which can enable the world's smallest projectors below 2-lbs., and can lighten up the largest movie screens up to 75 feet. The result is maximum loyalty, a picture whose limpidity, brilliancy and color are seen to be believed.

DLP Technology:

1. The Semiconductor That Changed All

At the heart of every DLP projection system is an optical semiconductor, which is known as the Digital Micro mirror Device, or DLP chip, which was invented by Dr. Larry Hornbeck of Texas Instruments in 1987. The DLP chip is perhaps the world's most advanced light switch. It comprises a rectangular array of equal to 2 million hinge-mounted microscopic mirrors; but, each of these micro mirrors measures below one-fifth the width of a human hair. When a DLP chip is co-ordinates with a digital video or graphic signal, a light source, and a projection lens, its mirrors can reproduce an all-digital picture onto a screen or other surface. The DLP chip and the sophisticated electronics that enclose it are called as digital Light Processing technology.

2. Digital-Light Processing I: The Grayscale Image

A DLP chip's micro mirrors are mounted on small hinges which permit them to tilt either in the direction of the light source in a DLP projection system (ON) or away from it (OFF) creating a light or dark pixel on the projection surface. The bit-streamed picture code entering the semiconductor directs every mirror to switch on and off up to several thousand times for every second. When a mirror is switched on more often than off, it reflects a light gray pixel, a mirror that is switched off more often reflects a darker gray pixel. In this method, 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 comprehensive grayscale picture.

3. Digital Light Processing II: Adding the Color

The white light produced by the lamp in a DLP projection system passes through a color wheel, because it travels to the surface of the DLP chip. The color wheel filters the light into red, green, and blue, from which a single-chip DLP projection system can make at least 16.7 million colors. As well as the 3-chip system found in DLP Cinema projection systems is able to produce not fewer than 35 trillion colors. The on and off states of every micro mirror are coordinated with these three fundamental color building blocks. For example, a mirror in charge for projecting a purple pixel will only reflect red and blue light to the projection surface; our eyes then merge these fast blinking flashes to see the intended shade in a projected image.

Applications and Configurations

1-Chip DLP Projection System: Televisions, home theater systems and business projectors employing DLP technology trust on a single chip configuration. White light passes through a color wheel filter, causing red, green and blue light to be reflected in series on the surface of the DLP chip. The switching of the mirrors and the amount of time they are on or off is coordinated according to the color shining on them. The human visual scheme incorporates the chronological color and sees a full-color image.

3-Chip DLP Projection System: DLP technology-enabled projectors for very high image quality or very high brightness level applications, trust on a 3-chip configuration to make stunning images, whether moving or still. In a 3-chip method, the white light produced by the lamp passes through a prism, which divides it into red, green and blue. Every DLP chip is devoted to one of these three colors; the colored light that the micro mirrors reflect is then united and passed through the projection lens to frame an image.

The Advantages of DLP Technology:

Some exceptional benefits are derived from DLP technology. One of the most understandable is the small package size, a feature most pertinent in the mobile presentation market. One more advantage of DLP is that it can create higher contrast video with deeper black levels than you usually get on an LCD projector. DLP has passionate followers in the home theater world mainly due to this key advantage.

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