A new DLP chipset from Texas Instruments has allowed both Mitsubishi and InFocus to show off these tiny projectors. While both are low-light, small-screen units—a 27-inch screen is quoted instead of the typical 60+ inches of many other DLP projectors—the small size isn't the only notable thing about the tiny displays. Both of them use an LED light source to project their images instead of the traditional high-heat bulb, meaning that the displays are not only cheap (around $600 is the estimated price should these hit the street) but that their bulbs should last an order of magnitude longer than those of their larger, brighter predecessors. Considering a projector bulb can be $400 or so by itself, that's good news.
Palm-sized DLP Video Projectors Attract Attention [HomeTheater.About]