A VARIABLE SIZE PROJECTION SCREEN APPARATUS WITH A PROJECTION SCREEN THAT IS PHYSICALLY RESIZABLE IN A LATERAL DIRECTION ON AT LEAST TWO DISTINCT LEVELS, AND A SCREEN ARRANGEMENT FOR USE IN SUCH APPARATUS

摘要

A variable size projection screen apparatus comprises image projection means with image feed means and beam generation means, and a screen for imaging the beam. The screen image can be resized in at least two distinctly different sizes. In particular, the screen proper is physically resizable in a lateral direction on at least two distinct levels.