Selecting The Lens Unit - NEC NC1000C Installation Manual

Before Setting Up Your Projector

1-3. Selecting the lens unit

This section provides the guideline information on how to select a screen size, projector mounting position, and type of lens units,
which is appropriate for your presentation purposes. Select the lens unit for your projector according to the environment in which it
is installed.
Note that all descriptions given in this manual assume that the angle of projection is zero degree. In case of projection from an upper
position or from the right or left, it is necessary to calculate the width for the minimum projected image that is a little larger than the
screen size.
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 mask
20
Width of minimum
Screen
Screen
Projected image
Screen mask