The design and priciples of a laser television with two-beam scanning are described. The system employs 2 laser beams

each being composed of red

green and blue components. The two beams from one scanner are scanned simultaneously by a rotating polygonal mirror for horizontal deflection and by a galvanometer for vertical deflection. Compared with conventional signal-beam scanning

the new design has the following advantages:(1)The rotational speed of the polygonal mirror can be reduced by a factor of 2

which will improved the system performance and decrease the difficulty of the manufacture of the system. The size of the polygonal facet and

therefore

the laser beam diameter can be increased

which will decrease the pixel diffusion. (2)The simultaneous operation of the 2 modulators will improve the horizontal resolution by a factor of 2.(3)for the same screen brightness

the single pixel power density can be reduced by a factor of 2

which will decrease the hazardous laser radiation.