Video display system

摘要

A video display system for suppressing variations of a video image display position and improving viewing comfort includes: a projector ( 1100 ) which projects a video projection light; and a screen unit ( 1150 ) which receives the video projection light and displays the video image. The screen unit ( 1150 ) includes first and second light detection units ( 1161 and 1162 ) which detect the received video projection light. The projector ( 1100 ) includes a control unit ( 1205 ) and an adjustment unit ( 106 ) which derive displacement in the display position of the video image based on the light detection results of the first and second light detection units ( 1161 and 1162 ) and control the output mode of the video projection light so as to suppress the displacement.