Abstract A new type of laser large screen display system is proposed: using a three-primary color all-solid-state laser controlled by a computer as the light source, mixing colors through a beam splitter, and two galvanometers to complete the scanning in the line and frame directions respectively. The cause and correction method of the pincushion distortion caused by the galvanometer scanning are studied, and the control method of the system is briefly introduced. Keywords Laser display Spectrometer Galvanometer scanning Color mixing
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