Sharp NP-PH3501QL Installation Manual - NEC - Page 31

Selecting the lens unit, from an upper position or from the right or left

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1. 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. Many types of optical lens for the projector are available for separate sale to support various projection range. 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. Minimum width Minimum height Projection from the left Screen Screen Projected image Projected image Projection from an upper position 5

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5
1. 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. Many types of optical lens for the projector are
available for separate sale to support various projection range.
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.
Minimum width
Screen
Screen
Minimum
height
Projected
image
Projected
image
Projection from the left
Projection from an upper position