NEC NC2041L, Руководство по установке

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Before Setting Up Your Projector
1-3. Selecting the lens unit
This section provides guideline information on how to select the screen size, the projector mounting position, and the type of
lens unit that is appropriate for your presentation purposes. Multiple lens units are sold separately as options for this projector.
Select an appropriate lens unit according to the environment in which your projector is installed. Note that all descriptions
given in this manual assume the angle of projection is zero degrees. In the case of projection from an upper position or from
the left or right, it is necessary to calculate the width for the minimum projected image at a size larger than the screen size.
Width of minimum
Screen
Projected image
1-3-1. Screen Type
The following two types of screen masks can be used for the DLP Cinema Projector. Check the screen mask for your projector
for its type before selecting lens units, because types of lens units to be used on the projector and its settings depend upon
the type of screen mask you use.
Horizontal moving screen mask
Screen masks move horizontally to adjust the screen.
Screen Screen mask Screen mask