System and method for controlling amount of light emitting from illuminating screen

A method for controlling amount of light emitting from a controllable illuminating screen system, said method comprising:

• providing a controllable illuminating screen system, said system comprising:
• a frame, defining a space;
• a screen, mounted onto a front side of said frame;
• a back plate, mounted onto a back side of said frame, opposite said front side;
• at least one light source, positioned within the space defined by the frame, said at least one light source configured to illuminate the screen;
• and
• a concealing element, located inside the space defined by the frame, said concealing element configured to block light from illuminating the screen;
• and
• controlling the amount of light emitting through the screen by determining a ratio between the area of the concealing element positioned in a section located between the at least one light source and the screen, and the total area of said section.