How does Pro Power Save work? That's why we keep our work free. LCoS projectors work by reflecting light off of a small reflective panel made of silicon and liquid crystal. LCoS projectors use a small reflective panel made of silicon and liquid crystal to project an image onto a screen. An LCoS projector uses liquid crystal on silicon technology, while a DLP projector uses digital light processing technology. If you’re in the market for a new projector, you may have come across LCoS projectors in your search. These apps continuously search the market to see if you could save by moving elsewhere, and then handle the move for you. No, oh wait a minute, there it is, now I see it! You see the Battery button only if you have a portable Mac. First, they tend to have a smoother image than other types of projectors, with less visible pixelation. They are also quieter than other types of projectors, which makes for a more immersive viewing experience. But what exactly are LCoS projectors, and how do they differ from other types of projectors? Unlike other types of projectors that use mirrors or LCD panels, LCoS projectors use a reflective surface to project images.