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microscopic patterns that conflict with the equally uniform pattern in the digital
image array. This creates interference, a visual artifact called a “moiré” pattern,
which compromises picture quality.
To eliminate light spill, a black felt border is also recommended to enhance the
viewing experience.
A2. Screen “Gain”:
Projection screens do not generate light; they only reflect projected light.
Therefore screen gain refers to relative reflectance to a reference standard. The
most common reference standard is Magnesium Carbonate (MgCO3). DWIN
recommends a screen “gain” of 1 to 1.3.
A3. Screen Dimensions and Position
You should consult your authorized DWIN dealer or professional installer for
his or her recommendation. Most screen manufacturers and theater designers
agree that screens should be installed to create a comfortable viewing angle
from a SEATED position. Here are some general guidelines:
• A screen should be wide enough to allow viewers to immerse themselves in
the program without having to move their heads from side to side. As a rule
of thumb, the viewing distance should not be less than two times the screen
width. For example, if your home theater has a 100-inch wide screen you should
have your seats installed no closer than 200-inches from the screen.
• When specifying screen width, remember to allow enough space on the wall
for left and right front speakers, and for the screen to blend with the aesthetics
of your theater environment. Choose a dark, neutral color (and matte, non-re-
flective) background wall surface. Bright wall colors or reflective decorations
can be distracting and could alter the appearance of the image.
• A screen should be installed high enough to allow a comfortable viewing
angle for people sitting in the front row. Eye level (from the seated position)
should be approximately 1/3 of the screen’s height measured from the bot-
tom of the screen.
• Your Authorized DWIN Dealer or Custom Installer should be able to consider
all your home theater design needs and provide you with professional recom-
mendations to enhance your investment.
Summary of Contents for DuoVision
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