3.2.1.2.2.2 Screen Accuracy
The deviation of screen distance from DEP shall be within ±10 mm throughout all areas. The screens/channel boundary for retro rear projection shall be lessthan5mm.
The spherical shall be applied flange features in order to accuracy of curvature for minimizing the boundary among the pieces of screen.
3.2.1.2.2.3 ScreenPainting
The spherical front projection shall be used screenpaintonly. The surface of spherical front projectionshall be maintained smoothly by using spray type painting. The dust and pollution shall be invisible to the naked eye after painting.
3.2.1.2.2.4 ScreenGain
Supplier shall apply the best gain value in the light of correlation between brightness and contrast, and verify suitability of gain value during factory acceptance test.The deviation of screen gain shall be within 0.05 throughout all channels.