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PT-LB90 Series

LCD Projectors PT-LB90NT PT-LB90
Versatile Basic PerformanceWired/Wireless LAN Compatible Network FunctionsHandy Functions for a Variety of Applications
Main Parts and Controls Specifications Standard Setting-up Positions Optional Accessories
Standard Setting-up Positions
Standard setting-up positions
unit : mm (inch)
L: Distance to screen
H: Height from the edge of screen to center of lens

NOTE:
Illustrations show the projector installed using optional ceiling bracket.
This illustration is not drawn to scale.


Projection distance (screen aspect ratio 4:3)

* This distance is especially recommended for ceiling-mounted use and other permanent installations.

NOTE:
Values shown are approximate. The value for L (distance to screen) varies slightly depending on the zoom lens characteristics.
When the shortest projection distance is used, a small amount of distortion may occur in the image due to the zoom lens characteristics.

Calculation of the projection distance

For a screen size different from the above, use the equation below to calculate the projection distance.

Aspect ratio 4 : 3 minimum
maximum		 L (m) = (diagonal screen size in inches) x 0.0292 – 0.036
L (m) = (diagonal screen size in inches) x 0.0351 – 0.044

NOTE:
Distances calculated with the above equations will include a slight error.

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