Optics for laser display

The planar-array spatial light modulator and multi-pixel parallel scanning mode were put forward to meet the requirements of the mechanical rotating mirror scanning and the line-field synchronization of the beam and horizontal signal. The planar-array spatial light modulator was adopted for the laser beam gating and light-intensity modulation, such that the light intensity of video images was modulated when the laser beam covering multi pixels scanned the planar-array spatial light modulator in high speed. Therefore, the laser video images were formed. Since the multi-pixel parallel scanning, a novel 2-D scanning rotating mirror and an integrator beam path were used, the scanning speed was reduced from 30000rpm to 3000rpm. This technology solved the difficulties in scanning laser display and eliminated the laser interference fringes.