Patent ID: 8045260

Claim:
A method of operating a system for generating a projected laser image, the system comprising at least one laser source and associated laser projection optics, wherein the laser source comprises a semiconductor laser optically coupled to a wavelength conversion device, the semiconductor laser comprises a gain control element for intensity modulation of the laser source and one or more complementary control elements for controlling a complementary characteristic of the semiconductor laser, and the method comprises: utilizing a gain control signal applied to the gain control element for the intensity modulation; utilizing a complementary control signal applied to the complementary control element to improve emission in the laser source; and utilizing the laser source and the projection optics to display a sequence of pixelized image frames, wherein the sequence of pixelized image frames comprises an alternating sequence of relatively high intensity active projection periods Mod ON and relatively low intensity inactive projection periods Mod OFF , the complementary control signal transitions between an active state Q ON during the relatively high intensity active projection periods Mod ON and an inactive state Q OFF during the relatively low intensity inactive projection periods Mod OFF , and the transition of the complementary control signal from the inactive state Q OFF to the active state Q ON is conditioned to anticipate initiation of relatively high intensity active projection periods Mod ON such that it is optimized upon initiation of the relatively high intensity active projection periods Mod ON .