Rear projection screens shall be Da-Lite's
Graphics as furnished by Da-Lite Screen Company,
Inc., Polacoat Division, Blue Ash, Ohio. Screen
shall be double element system with four active
lens surfaces. The rear element to include a
Fresnel lens towards the front surface. The
front element consists of a lenticular lens
array. The front side to have a unique wide
angle lenticular array with a pitch of .33mm.
The on axis gain to be 3.5 + 0.5 with a
part thickness >1/4". The horizontal 1/2
gain angle to be 32° + 4° and the
vertical 1/2 gain angle to be 9° +1.5°.
Da-Lite's
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
screen surfaces.