Patent attributes
A screen includes: a flexible screen body on which image light is projected; a fixed column arranged in a central portion; an arm sliding unit configured to pivotably support the second arm member of the first pantograph mechanism and the second arm member of the second pantograph mechanism with respect to the fixed column so as to be slidable in the vertical direction, in which the first pantograph mechanism and the second pantograph mechanism are expanded and contracted to move the first supporting unit and the second supporting unit toward and away from each other by a sliding movement of the arm sliding unit, and an urging member configured to urge the first supporting unit and the second supporting unit to move away from each other is provided.
