The advantages and disadvantages of DLP projectors

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

Compared with competing technologies, DLP supplies sharp, colourful, clear distinction images. For the reason that space between every micromirror is less than 1 micron, the area between pixels is vastly limited. Subsequently, the final image appears clearer. With using a mirror, the light loss is greatly reduced and the light output is quite high.

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

Utilizing a changeable light supply signifies that it could take longer than CRT and plasma displays, and the light from the projected image shouldn’t be inherently polarized. Light sources are easier to exchange than backlights for LCDs and lighter than LCDs and plasma TVs, which are often person substituteable. The new LED and laser DLP display system more or less eliminates the necessity for lamp replacement. DLP affords affordable 3D projection displays from a single unit and can be used with both energetic and passive 3D solutions.

Unlike liquid crystal shows and plasma displays, DLP shows don’t rely on the fluid as a projection medium and due to this fact usually are not restricted by their inherent mirror mechanism, making them ultimate for rising HD cinema and venue screens.

The DLP projector can deal with as much as seven completely different colors, giving it a wider coloration gamut.

DLP, which represents digital light processing, is a Texas Instruments technology. It uses mirrors and color wheels to mirror 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 only learn about single-panel DLP projectors.


The only downside of DLP projectors is what believers call “rainbow effects.” Client DLP projectors use transparent shade discs (half-shade wheels) rotating in front of the lamp. This disk, divided into several major colours, reconstructs all the final colors. The place of those primary colors is just like the slice of pie. Depending on the projector, there may 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 eight segments have a couple of white. The smaller the section, the less the turntable, the stronger the ability of the eyes to disassemble the color. This means you typically see something like a rainbow, particularly in shiny areas of the image. Luckily, not everybody sees these rainbows. So before shopping for a DLP projector, remember to check out some video sequences.

Some viewers discover the tweeter of the colour wheel an annoyance. Nevertheless, the driveline might be designed to be silent, and a few projectors don’t produce any audible colour wheel noise.

The perimeters of the projected image between black and light are normally jagged. This is called jitter. This is how the image transitions from one coloration to another, or how the curve appears within the image. In DLP projectors, the best way to present this gray transition is by turning the light source on and off quicker in this area. Sometimes, inconsistent dither artifacts can occur in shade conversions.

Because one pixel cannot render shadows precisely, error diffusion artifacts caused by averaging shadows on completely different pixels