Introduction: Game screen intensity of the upper left corner is a display, you have to control it the right intensity spaces Key offensive.

In rooms with a good deal of ambient light, a screen image with a dark background and light text tends to washout, but dark text on a light background will maintain its visual intensity a bit better.

The light travels through these slits and then at the far end here we have a screen on which we see where the light has fallen and in what intensity.