
3-1
Off-axis Projection
5975349A RETRO BLOCK DATA 2100LC 200598
3
OFF-AXIS PROJECTION
Off-axis projection
The projector can be adapted to off-axis installation in order to meet
environmental conditions. The range within which the projection
angle can be changed is 0° (= on-axis) to 10° downwards for the
QSD(0.8:1) and QSD(1.2:1) lens.
For every possible installation a number of things have to be geared
for one another:
- chosen lens : QSD(0.8:1) or QSD(1.2:1)
- position of the lens mounting, called 'discrete off-axis'
- internal conversion-kit: for each projection-angle/lens combi-
nation a different fresnel-lens is needed (see Table 1)
- mechanical shift
Table 1
5HDU7DEOH
3URMHFWLRQDQJOH
* Note:
These combinations are not recommended! The optical
performance towards the corners of the image is reduced.
Adjustment Procedure
Note: for servicing the projector a special tool kit is available with the
Order No R9829530.
a) Changing the discrete off-axis
The discrete off-axis is determined by the position of the fixing
screws in the adaptation holes of the lens mounting. On the lens
mounting, each of the holes of the upper-right set have the
corresponding projection-angle/lens combinations indicated.
3URMHFWLRQDQJOH
/HQV46'
/HQV46'
5.
5.
5.
5.
5.
5.
5.
5.
5.
5.