5. Setup
5.7.3 Back focal length adjustment
BFL
Back Focal Length
What can be done ?
The position of the projector lens in relation to the interpolation lens can be adjusted. The lens can be shifted towards or away from
the projector chassis . By doing so, the back focal length is adjusted and the focus is set to an optimal value. Th
is adjustment will
allow to benefit from the largest adjustment range for the lens focus (motorized lens focus).
1
1
1
1
2
Image 5-16
Back Focal length adjustment.
1 Locking screws
2 Adjustment hole
Image 5-17
A wrong back focal length ad
justment will not allow optimal focus throughout the full zoom range.
R59770066 SIM 7Q SERIES 07/10/2013 59
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