Watch: how Digital Light Processing works

How Digital Light Processing (DLP) works

Ben Krasnow is the modern Way Things Work. In this video, he shows how Digital Light Processing projectors work.

He even built a macro-size chip so you can see the mirrors in action.

Digital Light Processing projectors use a chip that is covered with tiny mirrors that tilt back and forth. When the mirror is tilted one way, it reflects light out through the front of the projector, creating a bright pixel. When the mirror is tilted the other way, the pixel is dark. In this video, I explain how DLP works and show a macro-scale model.