Adjusting The Lens; Back Focal Length Adjustment - Barco R9849975 Installation Manual

3. ADJUSTING THE LENS

Overview
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Back focal length adjustment

• Shift/Zoom/Focus
3.1 Back focal length adjustment
What can be done ?
The position of the lens can be adjusted. The lens can be turned inside or outside the projector chassis . By doing that, the back
focal length is adjusted and the focus is set to an optimal value. This adjustment will allow to benefit from the largest adjustment
range for the lens focus (motorized lens focus).
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Image 3-1
Back Focal length adjustment.
1 Locking screws
2 Adjustment hole
A wrong back focal length adjustment will not allow optimal focussing.
Necessary tools
• BFL Adjustment tool
• Hexagonal key
How to adjust ?
1. Loosen the 4 screws at the side of the lens.
R59770110 QSD LENSES 25/02/2008
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3. Adjusting the lens
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