Positioning The Projector; On-Axis Projector Installation - Barco Galaxy NH-12 User Manual

4. Installation
4.4

Positioning the projector

On-Axis projection
Projection where the projector is positioned so as to have the centre of the lens coinciding with the centre of the screen.
Positioning the projector
The position of the projector with reference to the screen may also be different depending on the installation. Basically the projector
can be positioned in an On-Axis or Off-Axis configuration. Several parameters can be calculated determining the position in any
installation.
a S H
b
S W
c
Image 4-10

ON-Axis projector installation

a Side view
b Top view
c Back view
x Optical axis projection lens
p Projector
s Screen
F Floor
20
S
B
S
S H
P D
x
C D = S H /2 + B -A
F
S W
F
R59770122 BARCO GALAXY NH-12 20/01/2015
P
A