DisneyCane
Well-Known Member
Sorry if this has already been mentioned but can someone explain why technically the screen has to be blue for takeoff?
It isn't supposed to be (at least I don't remember it being blue on purpose). The blue glow in the video is due to the xenon based DLP projectors having light leakage that causes black to not be very dark. It's like the glow of an older LCD screen. The DLP mirrors can't direct all of the light to the light absorber in the "off" position.
The laser based projectors get much darker blacks for two reasons. First, the brightness of the laser can be lowered for dark frames. Second, the perfectly aligned laser light is easier to direct with a DLP mirror.
*Note: If you don't know what I'm talking about regarding DLP mirrors, do a google search for DLP or Digital Light Processing.