The Pure Theatre black grid ALR or Ambient Light Rejecting projector screen technology when used in conjunction with UST projectors can dramatically improve brightness and contrast.

The surface has a finely engraved toothed grid that only provides targeted reflection of the projected beam at a specific angle. Non-imaged ambient light is absorbed by the light absorbing coating on the other side of the toothed grig and no diffraction occurs. Because the colour reproduction of the black grid is as high as 99%, Even during the day, you don't need to close curtains, you don't need to turn off lights, you can still have a saturated, richly-lit projection room.