The advantages and disadvantages of DLP projectors

Digital Light Processing (DLP) is a display gadget based on optical micro-electro-mechanical digital micromirror device. DLP is used for quite a lot of show purposes from traditional static displays to interactive shows, as well as non-traditional embedded applications including medical, safety and industrial applications.

Compared with competing technologies, DLP offers sharp, colourful, clear contrast images. Since the space between each micromirror is less than 1 micron, the area between pixels is drastically limited. Therefore, the final image looks clearer. With using a mirror, the light loss is vastly reduced and the light output is kind of high.

Smooth (1080p decision), no jitter image. Good geometry and glorious grayscale linearity are achievable

Using a substituteable light supply means that it could take longer than CRT and plasma displays, and the light from the projected image is just not inherently polarized. Light sources are simpler to switch than backlights for LCDs and lighter than LCDs and plasma TVs, which are often user exchangeable. The new LED and laser DLP display system more or less eliminates the necessity for lamp replacement. DLP presents affordable 3D projection shows from a single unit and can be utilized with each lively and passive 3D solutions.

Not like liquid crystal displays and plasma shows, DLP shows do not rely on the fluid as a projection medium and therefore should not limited by their inherent mirror mechanism, making them ideal for growing HD cinema and venue screens.

The DLP projector can deal with up to seven totally different colors, giving it a wider coloration gamut.

DLP, which represents digital light processing, is a Texas Instruments technology. It uses mirrors and coloration wheels to reflect and filter the projected light. For home and enterprise use, the DLP projector makes use of a reflective panel for all three colors. Digital cinema has three-panel DLP projectors priced at more than 10,000 US dollars. Most individuals solely learn about single-panel DLP projectors.


The one downside of DLP projectors is what believers call “rainbow effects.” Client DLP projectors use clear color discs (half-shade wheels) rotating in front of the lamp. This disk, divided into a number of main colors, reconstructs all the ultimate colors. The position of these major colors is like the slice of pie. Depending on the projector, there could also be 3 segments (1 red, 1 green and 1 blue) or four segments (1 red, 1 green, 1 blue and 1 white), 6 segments (1 red, 1 green, 1 blue, then 1 red, 1 green and 1 blue), and even 8 segments have just a few white. The smaller the part, the less the turntable, the stronger the flexibility of the eyes to disassemble the color. This means you sometimes see something like a rainbow, especially in bright areas of the image. Happily, not everyone sees these rainbows. So before buying a DLP projector, you’ll want to check out some video sequences.

Some viewers find the tweeter of the colour wheel an annoyance. However, the driveline can be designed to be silent, and a few projectors don’t produce any audible coloration wheel noise.

The edges of the projected image between black and light are often jagged. This is called jitter. This is how the image transitions from one coloration to another, or how the curve appears in the image. In DLP projectors, the way to current this grey transition is by turning the light source on and off sooner in this area. Often, inconsistent dither artifacts can occur in coloration conversions.

Because one pixel can not render shadows exactly, error diffusion artifacts caused by averaging shadows on completely different pixels