The DLP Technology

The DLP technology (digital light processing) is a reflective projector technique from Texal Instruments. Micro mirror chips are used, so called; Digital Mirror Devices, abbr. to DMD. These DMD semiconductor chips are as big as a fingernail. Moveable mirrors are etched onto the surfaces with each one representing one pixel.

Each single mirror throws light, depending on the triggering, either on the screen or on a black surface found in the device.

Pure grey grades are achieved through timing. When the point on the projector screen for example, should be displayed as dark grey, then the appropriate mirror throws only short light impulses on it. The mirrors can be tilted up to 1,000 times per minute.

With a one-chip-projector, the outgoing light from the lamp is bundled and directed through a color-wheel. This fast spinning wheel has various colour segments. The DLP chip can be found directly behind the colour wheel and is fed with a diffused video signal through any one of its three-color parts.