I have an Ambient Light Rejecting screen but it does not seem to work. There are windows behind my projector and the picture is washed out; what can be done?

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 *Disclaimer:  As great as ambient light rejecting screen technologies are, there are still certain laws of physics that define what should and should not be done with a specialty material such as this.

Main Answer:  Ambient Light Rejecting (ALR) projector screens are specially formatted to reject the majority of off-axis lighting from the top, bottom, and side angles. However if a strong light source is hitting the ALR material at roughly the same angle as the projector does, it will wash out the image. There is an easy solution.  I strongly recommend light blocking curtains or blackout shades to shield your room and to rely on the interior lighting that ALR screens work with.