Improved methods of system integration for MEMS-based laser projection systems

Ultra-compact laser projection systems based on a single two-dimensional micro scanning mirror are a very promising candidate for personal and mobile display solutions in infotainment. Fraunhofer IPMS' resonant micro scanning mirror in combination with lasers as light sources allows a degree of miniaturization that the integration of such projectors into mobile appliances will become possible. Content stored on the device can be consumed and presented anytime. The authors have already presented first demonstrators of ultra-compact laser projection system that utilize that principle. These systems use the Flying Spot approach: the image area is scanned by a single laser beam at such a high frequency that every virtual pixel of the image is hit at least once within the time of one image frame and image information is generated by modulation of the laser beam that is deflected by the micro scanning mirror. By driving of the mirror and modulation of the lasers in a strictly synchronous manner, the impression of a stable image can be generated.