Rear projection screens shall be Da-Lite's
Wide Angle as furnished by Da-Lite Screen
Company, Inc., Polacoat Division, Blue Ash,
Ohio. Screen shall be single element double
profile cast acrylic with the back surface
comprising a Fresnel lens and the front surface
exhibiting an array of lenticulations. Fresnel
grooves shall have a pitch of .5mm and the
lenticulations to have a .25mm pitch. On axis
gain shall be 3.5 + 0.5 and part
thickness shall be a nominal 1/4". The
horizontal 1/2 gain angle to be 32° + 4°
and the vertical 1/2 gain angle to be 10° +1.5°.
Da-Lite's
![](specs/pics/dnp.gif)
rear projection screens are designed for a long,
useful life. Properly installed and cared for,
they will produce high quality images for many
years. Listed below are recommended methods to
clean and handle each of Da-Lite's
![](specs/pics/dnp.gif)
screen surfaces.