We've already seen a few patent applications that suggest Apple is at least mulling over the idea of using projectors for one purpose or another, and another newly published one has now offered a bit more fodder for speculation. Described as a "display system having coherent and incoherent light sources," the patent application suggests that the projector would be laser-based, and be both cheaper and more power efficient than conventional light projectors, while also overcoming the so-called "speckle" problem sometimes seen with laser projectors. What's perhaps most interesting,
