| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a movable screen capable of easily correcting luminance unevenness. <P>SOLUTION: The movable screen 1 includes: a flexible planar screen body 3; a screen support 2 which is provided to face the rear surface of the screen body 3, with a predetermined gap from the screen body 3; a plurality of gap adjustment cylinders 5 which are provided at a predetermined pitch along the planar direction of the screen body 3, bridged between the rear surface of the screen body 3 and the screen support 2 and provided to freely extend and contract in a direction from the screen body 3 to the screen support 2; a color detection sensor which is provided at the top end on the side of the screen body 3 of each gap adjustment cylinder 5, detects the luminance value of image light projected onto the image projection surface 31 of the screen body 3, and outputs a detection signal; and a control circuit section which controls the extension and contraction of the gap adjustment cylinders 5, according to the detection signal from the color detection sensor. <P>COPYRIGHT: (C)2009,JPO&INPIT |
