This embodiment has more optical components but less challenging requirements on laser modulation frequencies and scanning angles. In addition, optical architecture of FIG. 5 is very suitable for high brightness applications. The laser diodes 511, 512 and 513 can be nominally the same lasers with the same emission wavelength. The power rating of the laser diodes can be selected so that desired brightness and color gamut are achieved on the screen. Alternatively, the laser diodes 511, 512 and 513 can have different emission wavelengths that provide higher conversion efficiency of phosphor emission. The cooling of phosphors or their motion on color wheel is typically not required, as the energy input from the laser diodes is naturally distributed over the whole area of phosphors by scanning of these laser beams. These phosphor based displays do not present any safety issue because highly collimated, low divergence laser beams are transferred into divergent light beams by phosphorescence. This contrasts with direct laser scanners of FIG. 1 that form images with highly parallel beams and require significant laser safety measures to avoid accidental direct eye exposures.

Another embodiment places phosphor(s) directly on the scanning mirror surface. In this case, the separate phosphor plates 541, 542 and 543 are not required in FIG. 5.