DMD displays are actually really fascinating! A normal DMD chip has several hundred thousand microscopic mirrors arranged in a rectangular array (as shown above), which each correspond to a pixel in the image to be displayed. The mirrors can rotate around 10 degrees in each direction. In the off state, the light from the projector bulb is not deflected off the pixel away from the screen (usually into a heatsink of some kind) and so it appears dark. In the on state, the light is reflected at the screen and the pixel appears bright on-screen. The clever part comes in producing different shade of color. In order to produce up to 1024 shades of gray, the mirror is toggled on and off very quickly, and the ratio of on to off determine the shade produced (by binary pulse-width modulation - you can learn more BPM here: https://en.wikipedia.org/wiki/Pulse-width_modulation). Here is a great link explaining how DMD devices work in more detail: https://en.wikipedia.org/wiki/Digital_micromirror_device
DMD displays are actually really fascinating! A normal DMD chip has several hundred thousand microscopic mirrors arranged in a rectangular array (as shown above), which each correspond to a pixel in the image to be displayed. The mirrors can rotate around 10 degrees in each direction. In the off state, the light from the projector bulb is not deflected off the pixel away from the screen (usually into a heatsink of some kind) and so it appears dark. In the on state, the light is reflected at the screen and the pixel appears bright on-screen. The clever part comes in producing different shade of color. In order to produce up to 1024 shades of gray, the mirror is toggled on and off very quickly, and the ratio of on to off determine the shade produced (by binary pulse-width modulation - you can learn more BPM here: https://en.wikipedia.org/wiki/Pulse-width_modulation). Here is a great link explaining how DMD devices work in more detail: https://en.wikipedia.org/wiki/Digital_micromirror_device