. "Consequently, there is a problem that the irradiation efficiency of the light irradiated from the light source 101 is low. [0013] Thus, another video display apparatus has been proposed which uses a plurality of lamps for its light source or a plurality of semiconductor light emitting elements such as light emitting diodes or laser diodes for each of the three primary colors. [0014]FIG. 2 shows an" . . .